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Author SHA1 Message Date
Paul Kompfner
3fee91ddec Drop redundant changelog entry for OpenAI Realtime example
The OpenAI Realtime story didn't add any service-level code — just a
new example. The original 4480.added.md entry already describes the
feature as "a realtime service like Gemini Live," which generalizes
to OpenAI Realtime.
2026-05-18 12:06:48 -04:00
Paul Kompfner
638294c1cc Add realtime-openai-local-vad example
Mirrors the Gemini Live local-VAD example for OpenAI Realtime, showing
that `wait_for_transcript_to_end_user_turn=False` composes cleanly
with `turn_detection=False`. The OpenAI Realtime service already wires
`UserStoppedSpeakingFrame` to `input_audio_buffer.commit` +
`response.create` when `turn_detection=False`, so the example is the
only new code needed.
2026-05-18 11:50:16 -04:00
Paul Kompfner
ea96b7aec7 Rename transcript-gather to post-turn transcript wait
Switch the vocabulary for the timer-driven phase that runs when
`wait_for_transcript_to_end_user_turn=False`. "Transcript gather" was
too vague to be self-documenting; "post-turn transcript wait" names
when it happens (after the user turn ends) and what it's for (waiting
for late-arriving transcripts).

Renames the internal property to `_wait_for_post_turn_transcripts`
and the supporting state/method names to match
(`_post_turn_transcript_wait_task`, `_complete_post_turn_transcript_wait`,
etc.). Updates docstrings, comments, log messages, the example
inline doc, and the test prose to use the new vocabulary consistently.
2026-05-18 10:51:14 -04:00
Paul Kompfner
666c619113 Size transcript-gather timer to STT-reported P99 TTFS
The aggregator's transcript-gather timer (used when
`wait_for_transcript_to_end_user_turn=False`) was hardcoded to
`DEFAULT_TTFS_P99`. Capture `STTMetadataFrame.ttfs_p99_latency` as
it flows through the user aggregator and prefer that value, just
like the stop strategies already do. Falls back to
`DEFAULT_TTFS_P99` when no STT service has reported a value.
2026-05-18 10:29:19 -04:00
Paul Kompfner
797d09a1d5 Align vocabulary around wait_for_transcript_to_end_user_turn=False
Reframe comments, docstrings, identifiers, changelog, and example
around a single explanation of the option: (1) turn strategies do not
consider user transcripts, letting the user turn end sooner, and (2)
the aggregator gathers user transcripts on its own after the turn
ends via a simple timer, then emits `on_user_turn_message_finalized`
with the new user context message.

The mechanism is generic, so internal aggregator vocabulary stays
generic ("transcript-gather", "after the user turn ends"); the
public-facing param docstring is the one place that explains the
"local turn detection drives a realtime service" use case. The stop
strategies' `wait_for_transcript` flag is pointed at as something
that's "usually flipped indirectly" by the aggregator param rather
than something to pair with it.

Renames internal state to match: `_expect_delayed_transcripts` →
`_aggregator_gathers_transcripts`, `_pending_finalization_*` →
`_transcript_gather_*`, `_finalize_delayed_user_message` →
`_finalize_user_message`, etc.
2026-05-18 10:18:22 -04:00
Paul Kompfner
ee1538d18e test: cover fallback path and align with vocabulary refactor
Adds two tests for the strategy's transcripts-without-VAD fallback
path — one in default mode (both events fire with the aggregated
content) and one in delayed-transcript mode (only
``on_user_turn_message_finalized`` fires; no end-of-turn event is
emitted since no turn ever started in the controller).

Updates existing tests for the vocabulary refactor: assertions now
expect ``content=None`` (not ``""``) for the end-of-turn event in
delayed-transcript mode; comments and docstrings use the
standardized terms (end of turn, user message finalization,
pending-finalization timer, plural "transcripts").
2026-05-18 09:55:42 -04:00
Paul Kompfner
8330c3487d Refactor delayed-transcript machinery; standardize vocabulary
Splits ``_maybe_emit_user_turn_stopped`` into three focused methods —
``_flush_user_message_to_context`` (push aggregation, return content +
timestamp), ``_finalize_user_turn`` (default-mode flow, emits both
events), and ``_finalize_delayed_user_message`` (delayed-mode flow,
emits only ``on_user_turn_message_finalized``). Fixes a side-issue
where ``on_user_turn_stopped`` could fire from non-end-of-turn paths
in delayed-transcript mode; that event now has a single origin (the
end-of-turn handler).

Standardizes vocabulary across docstrings and comments:

- "Default mode" / "Delayed-transcript mode" (with
  ``_expect_delayed_transcripts == False/True``)
- "End of turn" (not "audible stop" or "audible end of turn")
- "User message finalization" (the moment user-text is flushed to
  context + ``on_user_turn_message_finalized`` fires)
- "Pending finalization" (the in-between state in delayed mode)
- Transcripts (plural — the aggregator combines multiple per turn)

The timer that triggers user message finalization is no longer
described as a "backstop" — it's the sole trigger for finalization
in delayed-transcript mode, not a fallback. Renamed accordingly:
``_pending_finalization_task``, ``_pending_finalization_handler``,
``_run_pending_finalization``, ``_discard_pending_finalization``.

Adds a separate message class for the two events:
``UserTurnStoppedMessage.content`` is now ``str | None`` (``None``
at end-of-turn in delayed-transcript mode), and a new
``UserMessageFinalizedMessage`` carries the always-populated
``content`` for the finalization event.
2026-05-18 09:55:11 -04:00
Paul Kompfner
4479a3a6af docs: tighten wait_for_transcript_to_end_user_turn docstring + test docstring
Reframes the strategy mutations as part of configuring the flag
(not an "also" aside), and the ordering invariant in the test
docstring as flush-timing (not arrival-timing).
2026-05-15 15:16:39 -04:00
Paul Kompfner
8631518388 test: cover wait_for_transcript_to_end_user_turn=False aggregator behavior
Adds five tests for the delayed-transcript flow on
`LLMUserAggregator`:

- basic flow: `on_user_turn_stopped` fires fast with empty content;
  `on_user_turn_message_finalized` fires later with the populated
  transcript; user message lands in context.
- backstop with no transcript: backstop timer still finalizes the
  turn; message_finalized fires with empty content; no user message
  added to context.
- next-turn precondition violation: a new VAD start fires while the
  previous turn is still pending; the previous turn is force-flushed
  before the new turn begins.
- context-order with assistant response: paired aggregators with a
  late user transcript arriving before the assistant content streams;
  verifies the user message lands in context before the assistant
  message (the conversational-order invariant the design relies on).
- strategy mutation: explicit start/stop strategies are mutated by
  the bundle — `TranscriptionUserTurnStartStrategy` is dropped from
  start, `wait_for_transcript=False` is flipped on the stop strategy
  that had it explicitly set to True.

Tests patch `DEFAULT_TTFS_P99` to keep the backstop fast.
2026-05-15 14:08:50 -04:00
Paul Kompfner
47e2f7a037 realtime + local turn detection: drop the user-transcript wait
Add the configuration surface to drive a realtime service like Gemini
Live from local turn detection without paying user-transcript latency.
Cascaded pipelines wait for a transcript before ending the user's turn
because the downstream LLM needs the user's words recorded in context
— but that wait is pure latency in pipelines using local turn
detection to drive a realtime service, which consumes user audio
directly.

Set `wait_for_transcript_to_end_user_turn=False` on
`LLMUserAggregatorParams` to turn this on. With that single flag the
aggregator:

- drops `TranscriptionUserTurnStartStrategy` from the start strategies
  (so late-arriving realtime transcripts don't trigger new turns),
- sets `wait_for_transcript=False` on any stop strategy that supports
  it (so the turn ends on the audible end of the turn, without
  waiting for a transcript),
- fires `on_user_turn_stopped` on the audible end of the turn with
  empty `content` (since the transcript hasn't arrived), and
- defers the context flush until the transcript arrives or a backstop
  timer fires.

A new `on_user_turn_message_finalized` event fires when the user's
message has been written to context. In the default mode it
coincides with `on_user_turn_stopped`; in the delayed-transcript mode
it fires later. Consumers that want the populated transcript should
subscribe to `on_user_turn_message_finalized` — it's the event that
always carries the user message, regardless of mode.

Strategy mutations are logged: loudly when the user passed their own
strategies (we're overwriting parts of their config), quietly
otherwise. The strategy-level `wait_for_transcript` parameter on
`TurnAnalyzerUserTurnStopStrategy` and `SpeechTimeoutUserTurnStopStrategy`
remains exposed for advanced cases.

The example `realtime-gemini-live-local-vad.py` demonstrates the full
pattern.
2026-05-15 13:49:16 -04:00
Paul Kompfner
6d21507e95 user turn stop strategies: don't always wait for transcripts
Until now, both TurnAnalyzerUserTurnStopStrategy and
SpeechTimeoutUserTurnStopStrategy waited for at least one transcript
before ending the user turn. That's the right behavior for cascaded
pipelines, where the downstream LLM can't respond until the user's
words are recorded in its context — but it's pure latency in pipelines
using local turn detection to drive a realtime service like Gemini
Live.

Add a `require_transcript: bool | None = None` parameter to both
strategies. When None (default), it infers from whether an
STTMetadataFrame has been seen — a proxy for "does the downstream LLM
need the transcript in context?". Explicit True/False overrides the
heuristic.

When a transcript isn't required, the strategies also skip the
STT-waiting timeout in the VAD-stopped handler, so the user turn ends
as soon as the analyzer (or speech timer) concludes the turn is
complete.
2026-05-13 15:45:51 -04:00
148 changed files with 2556 additions and 13328 deletions

View File

@@ -1,91 +0,0 @@
---
name: squash-commits
description: Reorganize messy branch commits into a small set of logical, meaningful commits without changing any content. Drops merge-from-main commits. Safe: creates a backup branch first.
---
Reorganize the commits on the current branch into a small number of logical commits. Do NOT change any file content — only the commit structure changes.
## Instructions
### 1. Safety check
```bash
git status --short
```
If there are uncommitted changes, stop and tell the user to commit or stash them first.
### 2. Inspect the branch
```bash
git log main..HEAD --oneline
git diff main..HEAD --name-only
```
List every file changed vs `main` and every commit on the branch (excluding merge commits from main).
### 3. Create a backup branch
```bash
git branch backup/<current-branch-name>
```
Tell the user the backup exists so they can recover if needed.
### 4. Soft-reset to main and unstage everything
```bash
git reset --soft main
git restore --staged .
```
All branch changes are now in the working tree, unstaged. No content has changed.
### 5. Plan the logical groups
Read the changed files and the original commit messages to understand what the work covers. Group related files into logical commits. Typical groups:
- Core feature or fix (new source files + modified core files)
- Secondary features or fixes (each as its own commit if distinct)
- Refactoring or renames
- Tests
- Changelogs / docs
Use the changelog files (if any) as a strong hint — each changelog entry often maps to one commit.
Present the proposed grouping to the user and ask for confirmation before committing.
### 6. Commit in logical groups
For each group, stage only the relevant files and commit with a clear message following the project's conventions:
```bash
git add <file1> <file2> ...
git commit -m "..."
```
Use conventional commit prefixes if the project uses them (`feat:`, `fix:`, `refactor:`, `test:`, `chore:`).
### 7. Verify
```bash
git log main..HEAD --oneline
git diff main..HEAD --name-only
git status --short
```
Confirm:
- Commit count is small and each message is meaningful
- The set of changed files vs `main` is identical to before
- Working tree is clean
### 8. Remind about force-push
The branch history has been rewritten. Tell the user they will need to `git push --force-with-lease` when they are ready to update the remote. Do NOT push automatically.
## Rules
- Never change file contents. If you find yourself editing a file, stop.
- Never skip the backup branch step.
- Never force-push without explicit user instruction.
- If any step fails or the result looks wrong, tell the user and suggest restoring from the backup: `git reset --hard backup/<branch-name>`.

View File

@@ -7,515 +7,6 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
<!-- towncrier release notes start -->
## [1.2.1] - 2026-05-15
### Changed
- Changed the default WebSocket endpoints for `GradiumSTTService` and
`GradiumTTSService` to the region-neutral
`wss://api.gradium.ai/api/speech/asr` and
`wss://api.gradium.ai/api/speech/tts`. Gradium now automatically routes
traffic to the nearest endpoint. Override the url to pin to a specific
region.
(PR [#4500](https://github.com/pipecat-ai/pipecat/pull/4500))
### Fixed
- Fixed bot hangs when `filter_incomplete_user_turns` was enabled and the LLM
responded by calling a tool. The user turn never finalized, so the assistant
aggregator gated the tool-result context push and the LLM continuation never
ran. Tool calls now finalize the turn the moment they start, before the
function dispatches.
(PR [#4501](https://github.com/pipecat-ai/pipecat/pull/4501))
## [1.2.0] - 2026-05-14
### Added
- Added a `session_id` field to `RunnerArguments` so bots can log or trace a
per-session identifier in local development the same way they can in Pipecat
Cloud. The development runner now mints a UUID at every construction site,
and paths that already returned a `sessionId` to the caller (Daily `/start`,
dial-in webhook) share that same UUID with the runner args instead of
generating two. The SmallWebRTC `/api/offer` endpoint also accepts an
optional `session_id` query parameter so the `/sessions/{session_id}/...`
proxy can thread it through.
(PR [#4385](https://github.com/pipecat-ai/pipecat/pull/4385))
- Added a `max_buffer_delay_ms` constructor argument to `CartesiaTTSService`
for controlling Cartesia's server-side text buffering. When unset, Pipecat
picks a sensible default based on `text_aggregation_mode`: `0` in `SENTENCE`
mode (custom buffering — avoids stacking client-side aggregation on top of
Cartesia's default 3000ms server buffer) and unset in `TOKEN` mode
(Cartesia's managed buffering applies). Pass an explicit value (05000ms) to
override.
(PR [#4390](https://github.com/pipecat-ai/pipecat/pull/4390))
- Added a `mip_opt_out` constructor argument to `DeepgramTTSService` and
`DeepgramHttpTTSService` so callers can opt out of the Deepgram Model
Improvement Program. When set, the value is forwarded to Deepgram as a query
parameter on the speak request. Defaults to `None`, which preserves the
existing behavior. See https://dpgr.am/deepgram-mip for pricing implications
before enabling.
(PR [#4400](https://github.com/pipecat-ai/pipecat/pull/4400))
- Added an opt-in `add_tool_change_messages` flag to the LLM aggregators (set
via `LLMContextAggregatorPair(..., add_tool_change_messages=True)`) that
appends a developer-role message to the context whenever `LLMSetToolsFrame`
changes the set of advertised standard tools. Helps the LLM stay coherent
across mid-conversation tool changes, mitigating several flavors of
tool-call-related hallucination: calling tools that have been removed,
avoiding tools that have been re-added, and hallucinating output (made-up
answers or tool-call-shaped non-tool-calls) when tools are unavailable.
(PR [#4404](https://github.com/pipecat-ai/pipecat/pull/4404))
- Added `deferred(strategy)` and `DeferredUserTurnStopStrategy` in
`pipecat.turns.user_stop`. Wraps a stop strategy so it fires only the
inference-triggered event and suppresses `on_user_turn_stopped`, leaving
finalization to another strategy in the chain such as
`LLMTurnCompletionUserTurnStopStrategy`.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Added `ExternalUserTurnCompletionStopStrategy` in `pipecat.turns.user_stop`
a generic stop strategy that finalizes the user turn whenever a
`UserTurnInferenceCompletedFrame` arrives, regardless of which component
produced it. `LLMTurnCompletionUserTurnStopStrategy` now extends this base;
future producers (Flux, custom end-of-turn classifiers, etc.) can use the
base directly or subclass it to add producer-specific setup.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Added `on_user_turn_inference_triggered`, a new event on the user turn
controller, processor, aggregator and stop strategies that fires when a
strategy has enough signal to start LLM inference. By default it fires
together with `on_user_turn_stopped`; a gating strategy can fire only the
inference-triggered event and defer finalization to a peer.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Added `FilterIncompleteUserTurnStrategies` in
`pipecat.turns.user_turn_strategies` — a `UserTurnStrategies` specialization
that wraps the detector chain with `deferred(...)` and appends
`LLMTurnCompletionUserTurnStopStrategy` as the finalizer. Common case:
`user_turn_strategies=FilterIncompleteUserTurnStrategies()`. Pass
`config=UserTurnCompletionConfig(...)` to customize timeouts and prompts.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Added `LLMTurnCompletionUserTurnStopStrategy` in `pipecat.turns.user_stop`.
When installed, the strategy gates `on_user_turn_stopped` on a
`UserTurnInferenceCompletedFrame` (a new fieldless system frame emitted by
any component that can judge turn completeness — e.g. the
`UserTurnCompletionLLMServiceMixin` on `✓`). A `finalization_timeout`
provides a safety net if no completion frame ever arrives.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Added first-class RTVI support for the UI Agent Protocol:
- Adds `ui-event`, `ui-snapshot`, and `ui-cancel-task` client-to-server
messages, plus `ui-command` and `ui-task` server-to-client messages, with
paired `*Data` / `*Message` pydantic models.
- Adds built-in command payload models for `Toast`, `Navigate`, `ScrollTo`,
`Highlight`, `Focus`, `Click`, `SetInputValue`, and `SelectText`; matching
default handlers live in `@pipecat-ai/client-react`.
- Adds `RTVIProcessor.on_ui_message` for inbound `ui-event`, `ui-snapshot`,
and `ui-cancel-task` messages.
- Adds five UI pipeline frames, mirroring the `client-message`
frame-and-event pattern: downstream code pushes `RTVIUICommandFrame` /
`RTVIUITaskFrame` for the observer to wrap into outbound `UICommandMessage` /
`UITaskMessage` envelopes, while the processor pushes inbound
`RTVIUIEventFrame`, `RTVIUISnapshotFrame`, and `RTVIUICancelTaskFrame`
alongside `on_ui_message`.
- Bumps the RTVI `PROTOCOL_VERSION` from `1.2.0` to `1.3.0`.
(PR [#4407](https://github.com/pipecat-ai/pipecat/pull/4407))
- AWS Transcribe STT, Polly TTS, Bedrock LLM, and the Bedrock AgentCore
processor now resolve credentials via the standard boto3 provider chain (EC2
instance profiles, EKS pod roles / IRSA, ECS task roles, SSO,
`~/.aws/credentials`) when explicit credentials and `AWS_*` environment
variables are absent. Services running with IAM roles no longer need to
export static credentials.
(PR [#4416](https://github.com/pipecat-ai/pipecat/pull/4416))
- Added `keyterms` support to ElevenLabs STT services so Scribe V2 callers can
bias transcription for both file-based and realtime transcription.
(PR [#4426](https://github.com/pipecat-ai/pipecat/pull/4426))
- Added `watchdog_min_timeout` parameter to `DeepgramFluxSTT` and
`DeepgramFluxSageMakerSTT` (default `0.5` seconds) to control the minimum
silence duration before the watchdog sends a silence packet to prevent
dangling turns. The actual threshold is `max(chunk_duration * 2,
watchdog_min_timeout)`, so it also adapts automatically to the audio chunk
size in use.
(PR [#4430](https://github.com/pipecat-ai/pipecat/pull/4430))
- Added `cancel_on_interruption=False` support for `GeminiLiveLLMService` on
models that support Gemini's NON_BLOCKING tool mechanism (currently Gemini
2.x); the conversation now continues while the tool runs. On models that
don't yet support NON_BLOCKING (Gemini 3.x), the service surfaces a one-time
warning explaining the limitation. (Note: an intermittent 1008 error can
occasionally fire on Gemini 2.5 during long-running tool calls; we
auto-reconnect.)
(PR [#4448](https://github.com/pipecat-ai/pipecat/pull/4448))
- Added `NvidiaSageMakerWebsocketSTTService` for streaming speech recognition
using NVIDIA Nemotron ASR via an AWS SageMaker bidirectional-stream endpoint.
Produces `InterimTranscriptionFrame` and `TranscriptionFrame` frames, is
VAD-aware, and automatically reconnects on error.
(PR [#4464](https://github.com/pipecat-ai/pipecat/pull/4464))
- Added NVIDIA Magpie TTS services via AWS SageMaker:
`NvidiaSageMakerHTTPTTSService` (single HTTP invocation, streams raw PCM
back) and `NvidiaSageMakerWebsocketTTSService` (persistent HTTP/2 bidi-stream
with full interruption support via `InterruptibleTTSService`).
(PR [#4464](https://github.com/pipecat-ai/pipecat/pull/4464))
- Added support for `reasoning` configuration on `OpenAIRealtimeLLMService`,
for use with reasoning-capable Realtime models such as `gpt-realtime-2`.
(PR [#4470](https://github.com/pipecat-ai/pipecat/pull/4470))
- Inworld TTS updates:
- Added `delivery_mode` setting (`STABLE`/`BALANCED`/`CREATIVE`) to
`InworldTTSService` and `InworldHttpTTSService`, enabling the
stability-vs-creativity tradeoff in `inworld-tts-2`.
- Added language support to `InworldTTSService` and
`InworldHttpTTSService`. The `language` setting is now forwarded to the API,
and a new `language_to_inworld_language()` helper normalizes Pipecat
`Language` enums to Inworld's BCP-47 locale tags.
(PR [#4473](https://github.com/pipecat-ai/pipecat/pull/4473))
### Changed
- Updated the default `SonioxTTSService` model from `tts-rt-v1-preview` to the
generally available `tts-rt-v1`.
(PR [#4386](https://github.com/pipecat-ai/pipecat/pull/4386))
- Default `cartesia_version` for `CartesiaTTSService` bumped from `2025-04-16`
to `2026-03-01`, matching `CartesiaHttpTTSService` and unlocking the
`use_normalized_timestamps` and `max_buffer_delay_ms` fields.
(PR [#4390](https://github.com/pipecat-ai/pipecat/pull/4390))
- ⚠️ `CartesiaTTSService` now sends `use_normalized_timestamps: true` instead
of the deprecated `use_original_timestamps` field. Word timestamps now
reflect what was actually spoken (post text-normalization and
pronunciation-dictionary substitution), matching the convention Pipecat uses
for ElevenLabs. This is a behavior change for `sonic-3` users, who were
previously receiving timestamps tied to the input transcript.
(PR [#4390](https://github.com/pipecat-ai/pipecat/pull/4390))
- Broadened `tool_resources` to `app_resources` for easy access not just in
tool handlers but in other places like custom `FrameProcessor`s. Three
changes: a rename (`tool_resources``app_resources`), a new `app_resources`
property on `PipelineTask`, and a new `pipeline_task` property on
`FrameProcessor`. Tool handlers now read `params.app_resources`; custom
processors read `self.pipeline_task.app_resources`. The previous
`tool_resources` aliases (on `PipelineTask`, `FunctionCallParams`, and
`FrameProcessorSetup`) keep working but are deprecated as of 1.2.0 and emit
`DeprecationWarning`s.
(PR [#4395](https://github.com/pipecat-ai/pipecat/pull/4395))
- Lowered the per-message log in
`SmallWebRTCInputTransport._handle_app_message` from `debug` to `trace`. App
messages can be high-frequency and were noisy at debug level; set the loguru
level to `TRACE` to see them again.
(PR [#4397](https://github.com/pipecat-ai/pipecat/pull/4397))
- Changed the default model for `GrokRealtimeLLMService` to
`grok-voice-think-fast-1.0`, xAI's recommended Voice Agent model. The
previous default of `grok-voice-fast-1.0` has been deprecated by xAI and is
being removed.
(PR [#4401](https://github.com/pipecat-ai/pipecat/pull/4401))
- Changed the default Inworld TTS model from `inworld-tts-1.5-max` to
`inworld-tts-2` (Realtime TTS-2) across `InworldHttpTTSService`,
`InworldTTSService`, and the `InworldRealtimeLLMService` cascade. Existing
users can pin the prior model explicitly via the `model`/`tts_model`
argument; both `inworld-tts-1.5-max` and `inworld-tts-1.5-mini` remain valid
model IDs.
(PR [#4422](https://github.com/pipecat-ai/pipecat/pull/4422))
- Changed the default model for `GrokLLMService` from `grok-3` to
`grok-4.20-non-reasoning`. xAI is retiring `grok-3` on May 15, 2026.
(PR [#4429](https://github.com/pipecat-ai/pipecat/pull/4429))
- `DeepgramFluxSTT` watchdog silence threshold is now dynamic:
`max(chunk_duration * 2, watchdog_min_timeout)` instead of a fixed 500 ms.
This prevents false silence injections when large audio chunks are sent at
lower frequency.
(PR [#4430](https://github.com/pipecat-ai/pipecat/pull/4430))
- `ElevenLabsTTSService` now sends `close_context` to the server as soon as the
turn is complete (on `on_turn_context_completed`) rather than waiting until
all audio has finished playing back. The `isFinal` message from ElevenLabs is
now used to signal `TTSStoppedFrame` and clean up the audio context,
improving turn transition timing.
(PR [#4433](https://github.com/pipecat-ai/pipecat/pull/4433))
- Updated `InworldHttpTTSService` and `InworldTTSService` to use PCM audio
encoding by default, which returns audio bytes without headers.
(PR [#4446](https://github.com/pipecat-ai/pipecat/pull/4446))
- Moved `create_task`, `cancel_task`, the `task_manager` property, and
`setup(task_manager)` up from `FrameProcessor` to `BaseObject`. Custom
`BaseObject` subclasses (turn strategies, controllers, etc.) now inherit
these methods directly instead of reimplementing the task manager wiring.
Owners propagate the task manager to their child `BaseObject`s via `await
child.setup(task_manager)`.
(PR [#4449](https://github.com/pipecat-ai/pipecat/pull/4449))
- Changed the default OpenAI Realtime input audio transcription model from
`gpt-4o-transcribe` to `gpt-realtime-whisper` for both
`OpenAIRealtimeSTTService` and `OpenAIRealtimeLLMService`. The new model does
not accept the `prompt` parameter; if a prompt is supplied alongside
`gpt-realtime-whisper`, it is dropped automatically and a warning is logged.
To keep using prompt hints, explicitly pin `model="gpt-4o-transcribe"` (or
`"gpt-4o-mini-transcribe"`).
(PR [#4450](https://github.com/pipecat-ai/pipecat/pull/4450))
- Updated the default model for `CartesiaTTSService` and
`CartesiaHttpTTSService` from `sonic-3` to `sonic-3.5`.
(PR [#4462](https://github.com/pipecat-ai/pipecat/pull/4462))
- Changed the default model for `OpenAIRealtimeLLMService` from
`gpt-realtime-1.5` to `gpt-realtime-2`.
(PR [#4472](https://github.com/pipecat-ai/pipecat/pull/4472))
### Deprecated
- Deprecated `LLMUserAggregatorParams.filter_incomplete_user_turns`. Use
`user_turn_strategies=FilterIncompleteUserTurnStrategies()` (or add
`LLMTurnCompletionUserTurnStopStrategy` to a custom
`user_turn_strategies.stop`) instead. Setting the legacy flag still works for
one release: the aggregator emits a `DeprecationWarning` and rewires the
strategies as if you had passed `FilterIncompleteUserTurnStrategies`
directly.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Deprecated `ResampyResampler` in favor of `SOXRAudioResampler` (or the
`create_file_resampler()` / `create_stream_resampler()` factories).
Instantiating `ResampyResampler` now emits a `DeprecationWarning`. The class
will be removed in Pipecat 2.0 along with the default `resampy` and `numba`
dependencies.
(PR [#4428](https://github.com/pipecat-ai/pipecat/pull/4428))
### Fixed
- Fixed `CartesiaTTSService` surfacing `flush_done` messages from Cartesia as
`ErrorFrame`s. The latest API emits a `flush_done` per transcript when
server-side buffering is disabled; Pipecat now consumes them silently since
each turn already has its own `context_id`.
(PR [#4390](https://github.com/pipecat-ai/pipecat/pull/4390))
- Fixed Cartesia tag helpers (`SPELL`, `EMOTION_TAG`, `PAUSE_TAG`,
`VOLUME_TAG`, `SPEED_TAG`) raising `TypeError` when called on an instance
(e.g. `tts.SPELL("hi")`). They're now `@staticmethod` and callable from both
the class and an instance.
(PR [#4390](https://github.com/pipecat-ai/pipecat/pull/4390))
- Fixed `CartesiaHttpTTSService` pushing two `ErrorFrame`s on a non-200
response — one with the API's error text and a second, less informative
"Unknown error" frame from the outer exception handler. It now pushes a
single frame that includes the HTTP status code and returns cleanly.
(PR [#4390](https://github.com/pipecat-ai/pipecat/pull/4390))
- Fixed an issue where `LocalSmartTurnAnalyzerV3` was imported unconditionally
for user turn stop strategies. It is now only imported when
`default_user_turn_stop_strategies()` is called. This improves startup time
and removes the `transformers` "PyTorch/TensorFlow/Flax not found" warning
when the default stop strategies are not used.
(PR [#4393](https://github.com/pipecat-ai/pipecat/pull/4393))
- Fixed `GrokRealtimeLLMService` ignoring the configured model. The model was
stored in `Settings` but never sent to xAI, so every session silently fell
back to xAI's server-side default. The model is now passed via the `?model=`
query parameter on the WebSocket URL as xAI's Voice Agent API requires.
(PR [#4401](https://github.com/pipecat-ai/pipecat/pull/4401))
- Fixed `on_user_turn_stopped` firing prematurely when
`filter_incomplete_user_turns` was enabled. The event now fires only after
the LLM confirms the user turn is complete (`✓`); previously the smart-turn
detector's tentative stop was bubbling up before the LLM had a chance to veto
it, causing observers, transcript appenders and UI indicators to receive an
early — and sometimes duplicated — signal.
(PR [#4405](https://github.com/pipecat-ai/pipecat/pull/4405))
- Fixed `TTSSpeakFrame(append_to_context=True)` greetings sometimes splitting
across two assistant messages in the LLM context and not surfacing in
`on_assistant_turn_stopped`. The `LLMAssistantPushAggregationFrame` emitted
at the end of a TTS context now carries a PTS just past the last word so it
can't overtake clock-queued `TTSTextFrame`s in the transport's output, and
`LLMAssistantAggregator` now triggers
`on_assistant_turn_started`/`on_assistant_turn_stopped` when it receives the
frame outside an LLM response cycle (restoring v0.0.104 behavior for greeting
transcripts).
(PR [#4414](https://github.com/pipecat-ai/pipecat/pull/4414))
- Fixed `ElevenLabsTTSService` and `ElevenLabsHttpTTSService` producing merged
words (e.g. `bookLook`) when using Flash models. Flash often splits sentences
mid-stream into alignment chunks that begin with a real inter-word space, but
the previous fix unconditionally stripped that space from every chunk.
Leading spaces are now stripped only on the first alignment chunk of an
utterance, so subsequent chunks correctly flush partial words across
boundaries.
(PR [#4415](https://github.com/pipecat-ai/pipecat/pull/4415))
- Fixed AWS Polly TTS, Bedrock LLM, and the Bedrock AgentCore processor
erroring out when only one of `AWS_ACCESS_KEY_ID` / `AWS_SECRET_ACCESS_KEY`
was set in the environment. The half-populated kwargs are no longer forwarded
to aioboto3; partial env-var configurations now fall through to the boto3
credential chain like fully-unset configurations do.
(PR [#4416](https://github.com/pipecat-ai/pipecat/pull/4416))
- Fixed `ElevenLabsTTSService` and `ElevenLabsHttpTTSService` writing
romanized/normalized text to the LLM context. With non-Latin input (e.g.,
Chinese), the assistant transcript was getting populated with pinyin (`Ni Hao
!` instead of `你好!`), which then degraded subsequent LLM turns. The services
now consume `alignment` by default and only switch to `normalizedAlignment` /
`normalized_alignment` when `pronunciation_dictionary_locators` is configured
(where `alignment` has overlapping restarts that produce duplicated/garbled
words, per #4316). Both fields are read with preferred-with-fallback
semantics since each is nullable per the API schema.
(PR [#4424](https://github.com/pipecat-ai/pipecat/pull/4424))
- Fixed a deadlock in `TTSService` that could permanently stall pipeline
processing when all three conditions occurred together:
`pause_frame_processing=True`, an interruption arrived before any TTS audio
was played, and an `UninterruptibleFrame` (e.g. `TTSUpdateSettingsFrame`,
`FunctionCallResultFrame`) was in the processing queue at that moment. The
process task would block on `__process_event.wait()` indefinitely because
`BotStoppedSpeakingFrame` never arrives (no audio was played) and the
interruption handler did not resume processing. Affects services using
`pause_frame_processing=True` such as ElevenLabs, Rime, AsyncAI, Gradium, and
ResembleAI.
(PR [#4431](https://github.com/pipecat-ai/pipecat/pull/4431))
- Fixed interruptions being delayed when a slow non-uninterruptible frame was
processing and an uninterruptible frame was waiting in the queue. The bot
would stall until the slow frame finished instead of cancelling it
immediately on interruption.
(PR [#4434](https://github.com/pipecat-ai/pipecat/pull/4434))
- Fixed `TTSService` dropping uninterruptible frames (e.g.
`FunctionCallResultFrame`) from its internal serialization queue when an
interruption occurs. Previously, the queue was recreated on every
interruption, silently discarding any queued frames. The queue is now reset
instead of recreated, preserving uninterruptible frames so they are always
delivered downstream.
(PR [#4435](https://github.com/pipecat-ai/pipecat/pull/4435))
- Fixed a race condition in the Daily transport that caused `AttributeError:
'NoneType' object has no attribute 'send_app_message'` when tearing down a
pipeline. Both `DailyInputTransport` and `DailyOutputTransport` share the
same `DailyTransportClient` and both call `cleanup()`, which was releasing
the underlying `CallClient` on the first call — leaving the second caller
with a `None` client.
(PR [#4440](https://github.com/pipecat-ai/pipecat/pull/4440))
- Restored `cancel_on_interruption=False` support for `AWSNovaSonicLLMService`
and `OpenAIRealtimeLLMService`. These services previously honored the flag by
simply not cancelling in-flight function calls on interruption; the
introduction of the new async-tool mechanism (which threads
started/intermediate/final messages through the LLM context) broke that path
because the realtime services didn't know how to interpret those messages.
Note that new-style streamed intermediate results
(`FunctionCallResultProperties(is_final=False)`) are not supported on these
realtime services. Similar fixes for other impacted realtime services are
forthcoming.
(PR [#4441](https://github.com/pipecat-ai/pipecat/pull/4441))
- Fixed two misspelled Gemini TTS voice names in
`GeminiTTSService.AVAILABLE_VOICES`.
(PR [#4443](https://github.com/pipecat-ai/pipecat/pull/4443))
- Extended the `cancel_on_interruption=False` regression fix to
`GrokRealtimeLLMService`, `AzureRealtimeLLMService`, and
`UltravoxRealtimeLLMService`. Grok and Azure use the same approach as in
#4441 (each service detects async-tool messages in the LLM context and routes
the final result to its formal tool-result channel; Azure inherits
transitively from `OpenAIRealtimeLLMService`). Ultravox needed a different
approach because its API freezes the conversation between
`client_tool_invocation` and the matching `client_tool_result` — for
async-registered functions it now ships a placeholder `client_tool_result`
immediately when the function is invoked (to unfreeze the conversation), then
injects the real result as user-side text once the tool finishes. Streamed
intermediate results (`FunctionCallResultProperties(is_final=False)`) are
still not supported on any of these realtime services. `GeminiLiveLLMService`
and `InworldRealtimeLLMService` are excluded for now: Gemini Live's
async-tool path needs deeper investigation, and Inworld tool calling needs to
be sorted out first.
(PR [#4447](https://github.com/pipecat-ai/pipecat/pull/4447))
- Fixed `OpenAIRealtimeLLMService` handling of multi-output-item responses
(observed with `gpt-realtime-2`). A single response can now contain more than
one audio item, and the first item's `audio.done` may arrive after the second
item's deltas have started. Deltas still arrive strictly in playback order,
so we continue to forward them as received (matching OpenAI's reference
implementation). The fix removes spurious warnings, ensures truncation always
targets the latest audio item, and emits a single bracketing
`TTSStartedFrame`/`TTSStoppedFrame` pair per assistant turn (the Stopped is
now pushed on `response.done`).
(PR [#4465](https://github.com/pipecat-ai/pipecat/pull/4465))
- Fixed missing `output` attribute on LLM OpenTelemetry spans when the LLM call
is interrupted mid-stream.
(PR [#4467](https://github.com/pipecat-ai/pipecat/pull/4467))
- Fixed incorrect `metrics.ttfb` on STT OpenTelemetry spans, and parented them
to the current turn span.
(PR [#4467](https://github.com/pipecat-ai/pipecat/pull/4467))
- Fixed incorrect `metrics.ttfb` on TTS OpenTelemetry spans for streaming
services.
(PR [#4467](https://github.com/pipecat-ai/pipecat/pull/4467))
- Extended the `cancel_on_interruption=False` regression fix to
`InworldRealtimeLLMService`. Uses the same approach as in #4441 (the service
detects async-tool messages in the LLM context and routes the final result to
its formal tool-result channel). Note: as of this writing, Inworld Realtime
doesn't appear to handle the resulting delayed tool result reliably — the
routing is best-effort and the service surfaces a one-time warning when
async-tool messages are seen. Streamed intermediate results
(`FunctionCallResultProperties(is_final=False)`) are still not supported on
this realtime service. (Inworld was excluded from #4447 pending resolution of
an unrelated tool-calling issue, which turned out to be an account-level
matter.)
(PR [#4474](https://github.com/pipecat-ai/pipecat/pull/4474))
- Fixed Cartesia TTS Korean word timestamps to use normal spacing rules,
preserving word boundaries and per-word timestamp alignment during downstream
aggregation.
(PR [#4475](https://github.com/pipecat-ai/pipecat/pull/4475))
- Fixed Cartesia TTS Chinese and Japanese timestamp grouping to preserve
provider text spacing, avoiding artificial spaces when timestamp groups are
reassembled downstream.
(PR [#4475](https://github.com/pipecat-ai/pipecat/pull/4475))
- Fixed `SonioxSTTService` final transcription frames missing detected language
metadata when Soniox returns token-level language annotations.
(PR [#4482](https://github.com/pipecat-ai/pipecat/pull/4482))
- Fixed Soniox final transcription language detection to use the most common
recognized token language, avoiding mislabeling an utterance when the last
token is tagged with a different language.
(PR [#4495](https://github.com/pipecat-ai/pipecat/pull/4495))
- Fixed dropped audio in streaming TTS services whose wire protocol doesn't
echo `context_id` back on incoming audio (Sarvam, Smallest, Soniox, Inworld,
and others). Previously, audio that arrived between contexts or at the very
start of a turn was tagged with `context_id=None` and silently dropped with
an "unable to append audio to context: no context ID provided" debug log.
`TTSService.get_active_audio_context_id()` now falls back to the
synthesis-side `_turn_context_id` when the playback cursor isn't set yet.
(PR [#4497](https://github.com/pipecat-ai/pipecat/pull/4497))
### Security
- Fixed a path traversal issue in the development runner's
`/files/{filename:path}` download endpoint. Previously, when the runner was
started with `--folder`, a request like `/files/..%2F..%2Fetc%2Fpasswd` could
escape the configured folder because `%2F`-encoded separators bypassed
Starlette's path normalisation. The endpoint now resolves the joined path and
rejects any filename that escapes the allowed base with a 403, and also
returns 404 (instead of an implicit `null` 200) when `--folder` is unset.
(PR [#4417](https://github.com/pipecat-ai/pipecat/pull/4417))
## [1.1.0] - 2026-04-27
### Added

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@@ -92,10 +92,10 @@ Catch new features, interviews, and how-tos on our [Pipecat TV](https://www.yout
| Category | Services |
| ------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Speech-to-Text | [AssemblyAI](https://docs.pipecat.ai/api-reference/server/services/stt/assemblyai), [AWS](https://docs.pipecat.ai/api-reference/server/services/stt/aws), [Azure](https://docs.pipecat.ai/api-reference/server/services/stt/azure), [Cartesia](https://docs.pipecat.ai/api-reference/server/services/stt/cartesia), [Deepgram](https://docs.pipecat.ai/api-reference/server/services/stt/deepgram), [ElevenLabs](https://docs.pipecat.ai/api-reference/server/services/stt/elevenlabs), [Fal Wizper](https://docs.pipecat.ai/api-reference/server/services/stt/fal), [Gladia](https://docs.pipecat.ai/api-reference/server/services/stt/gladia), [Google](https://docs.pipecat.ai/api-reference/server/services/stt/google), [Gradium](https://docs.pipecat.ai/api-reference/server/services/stt/gradium), [Groq (Whisper)](https://docs.pipecat.ai/api-reference/server/services/stt/groq), [Mistral](https://docs.pipecat.ai/api-reference/server/services/stt/mistral), [NVIDIA](https://docs.pipecat.ai/api-reference/server/services/stt/nvidia), [OpenAI (Whisper)](https://docs.pipecat.ai/api-reference/server/services/stt/openai), [Sarvam](https://docs.pipecat.ai/api-reference/server/services/stt/sarvam), [Soniox](https://docs.pipecat.ai/api-reference/server/services/stt/soniox), [Speechmatics](https://docs.pipecat.ai/api-reference/server/services/stt/speechmatics), [Whisper](https://docs.pipecat.ai/api-reference/server/services/stt/whisper), [xAI](https://docs.pipecat.ai/api-reference/server/services/stt/xai) |
| LLMs | [Anthropic](https://docs.pipecat.ai/api-reference/server/services/llm/anthropic), [AWS](https://docs.pipecat.ai/api-reference/server/services/llm/aws), [Azure](https://docs.pipecat.ai/api-reference/server/services/llm/azure), [Cerebras](https://docs.pipecat.ai/api-reference/server/services/llm/cerebras), [DeepSeek](https://docs.pipecat.ai/api-reference/server/services/llm/deepseek), [Fireworks AI](https://docs.pipecat.ai/api-reference/server/services/llm/fireworks), [Gemini](https://docs.pipecat.ai/api-reference/server/services/llm/gemini), [Grok](https://docs.pipecat.ai/api-reference/server/services/llm/grok), [Groq](https://docs.pipecat.ai/api-reference/server/services/llm/groq), [Inception](https://docs.pipecat.ai/api-reference/server/services/llm/inception), [Mistral](https://docs.pipecat.ai/api-reference/server/services/llm/mistral), [Nebius](https://docs.pipecat.ai/api-reference/server/services/llm/nebius), [Novita](https://docs.pipecat.ai/api-reference/server/services/llm/novita), [NVIDIA NIM](https://docs.pipecat.ai/api-reference/server/services/llm/nvidia), [Ollama](https://docs.pipecat.ai/api-reference/server/services/llm/ollama), [OpenAI](https://docs.pipecat.ai/api-reference/server/services/llm/openai), [OpenAI Responses](https://docs.pipecat.ai/api-reference/server/services/llm/openai-responses), [OpenRouter](https://docs.pipecat.ai/api-reference/server/services/llm/openrouter), [Perplexity](https://docs.pipecat.ai/api-reference/server/services/llm/perplexity), [Qwen](https://docs.pipecat.ai/api-reference/server/services/llm/qwen), [SambaNova](https://docs.pipecat.ai/api-reference/server/services/llm/sambanova), [Sarvam](https://docs.pipecat.ai/api-reference/server/services/llm/sarvam), [Together AI](https://docs.pipecat.ai/api-reference/server/services/llm/together) |
| LLMs | [Anthropic](https://docs.pipecat.ai/api-reference/server/services/llm/anthropic), [AWS](https://docs.pipecat.ai/api-reference/server/services/llm/aws), [Azure](https://docs.pipecat.ai/api-reference/server/services/llm/azure), [Cerebras](https://docs.pipecat.ai/api-reference/server/services/llm/cerebras), [DeepSeek](https://docs.pipecat.ai/api-reference/server/services/llm/deepseek), [Fireworks AI](https://docs.pipecat.ai/api-reference/server/services/llm/fireworks), [Gemini](https://docs.pipecat.ai/api-reference/server/services/llm/gemini), [Grok](https://docs.pipecat.ai/api-reference/server/services/llm/grok), [Groq](https://docs.pipecat.ai/api-reference/server/services/llm/groq), [Mistral](https://docs.pipecat.ai/api-reference/server/services/llm/mistral), [Nebius](https://docs.pipecat.ai/api-reference/server/services/llm/nebius), [Novita](https://docs.pipecat.ai/api-reference/server/services/llm/novita), [NVIDIA NIM](https://docs.pipecat.ai/api-reference/server/services/llm/nvidia), [Ollama](https://docs.pipecat.ai/api-reference/server/services/llm/ollama), [OpenAI](https://docs.pipecat.ai/api-reference/server/services/llm/openai), [OpenAI Responses](https://docs.pipecat.ai/api-reference/server/services/llm/openai-responses), [OpenRouter](https://docs.pipecat.ai/api-reference/server/services/llm/openrouter), [Perplexity](https://docs.pipecat.ai/api-reference/server/services/llm/perplexity), [Qwen](https://docs.pipecat.ai/api-reference/server/services/llm/qwen), [SambaNova](https://docs.pipecat.ai/api-reference/server/services/llm/sambanova), [Sarvam](https://docs.pipecat.ai/api-reference/server/services/llm/sarvam), [Together AI](https://docs.pipecat.ai/api-reference/server/services/llm/together) |
| Text-to-Speech | [Async](https://docs.pipecat.ai/api-reference/server/services/tts/asyncai), [AWS](https://docs.pipecat.ai/api-reference/server/services/tts/aws), [Azure](https://docs.pipecat.ai/api-reference/server/services/tts/azure), [Camb AI](https://docs.pipecat.ai/api-reference/server/services/tts/camb), [Cartesia](https://docs.pipecat.ai/api-reference/server/services/tts/cartesia), [Deepgram](https://docs.pipecat.ai/api-reference/server/services/tts/deepgram), [ElevenLabs](https://docs.pipecat.ai/api-reference/server/services/tts/elevenlabs), [Fish](https://docs.pipecat.ai/api-reference/server/services/tts/fish), [Google](https://docs.pipecat.ai/api-reference/server/services/tts/google), [Gradium](https://docs.pipecat.ai/api-reference/server/services/tts/gradium), [Groq](https://docs.pipecat.ai/api-reference/server/services/tts/groq), [Hume](https://docs.pipecat.ai/api-reference/server/services/tts/hume), [Inworld](https://docs.pipecat.ai/api-reference/server/services/tts/inworld), [Kokoro](https://docs.pipecat.ai/api-reference/server/services/tts/kokoro), [LMNT](https://docs.pipecat.ai/api-reference/server/services/tts/lmnt), [MiniMax](https://docs.pipecat.ai/api-reference/server/services/tts/minimax), [Mistral](https://docs.pipecat.ai/api-reference/server/services/tts/mistral), [Neuphonic](https://docs.pipecat.ai/api-reference/server/services/tts/neuphonic), [NVIDIA](https://docs.pipecat.ai/api-reference/server/services/tts/nvidia), [OpenAI](https://docs.pipecat.ai/api-reference/server/services/tts/openai), [Piper](https://docs.pipecat.ai/api-reference/server/services/tts/piper), [Resemble](https://docs.pipecat.ai/api-reference/server/services/tts/resemble), [Rime](https://docs.pipecat.ai/api-reference/server/services/tts/rime), [Sarvam](https://docs.pipecat.ai/api-reference/server/services/tts/sarvam), [Smallest](https://docs.pipecat.ai/api-reference/server/services/tts/smallest), [Soniox](https://docs.pipecat.ai/api-reference/server/services/tts/soniox), [Speechmatics](https://docs.pipecat.ai/api-reference/server/services/tts/speechmatics), [xAI](https://docs.pipecat.ai/api-reference/server/services/tts/xai), [XTTS](https://docs.pipecat.ai/api-reference/server/services/tts/xtts) |
| Speech-to-Speech | [AWS Nova Sonic](https://docs.pipecat.ai/api-reference/server/services/s2s/aws), [Gemini Multimodal Live](https://docs.pipecat.ai/api-reference/server/services/s2s/gemini), [Grok Voice Agent](https://docs.pipecat.ai/api-reference/server/services/s2s/grok), [OpenAI Realtime](https://docs.pipecat.ai/api-reference/server/services/s2s/openai), [Ultravox](https://docs.pipecat.ai/api-reference/server/services/s2s/ultravox), |
| Transport | [Daily (WebRTC)](https://docs.pipecat.ai/api-reference/server/services/transport/daily), [FastAPI Websocket](https://docs.pipecat.ai/api-reference/server/services/transport/fastapi-websocket), [LiveKit (WebRTC)](https://docs.pipecat.ai/api-reference/server/services/transport/livekit), [SmallWebRTCTransport](https://docs.pipecat.ai/api-reference/server/services/transport/small-webrtc), [Vonage (WebRTC)](https://docs.pipecat.ai/api-reference/server/services/transport/vonage), [WebSocket Server](https://docs.pipecat.ai/api-reference/server/services/transport/websocket-server), [WhatsApp](https://docs.pipecat.ai/api-reference/server/services/transport/whatsapp), Local |
| Transport | [Daily (WebRTC)](https://docs.pipecat.ai/api-reference/server/services/transport/daily), [FastAPI Websocket](https://docs.pipecat.ai/api-reference/server/services/transport/fastapi-websocket), [LiveKit (WebRTC)](https://docs.pipecat.ai/api-reference/server/services/transport/livekit), [SmallWebRTCTransport](https://docs.pipecat.ai/api-reference/server/services/transport/small-webrtc), [WebSocket Server](https://docs.pipecat.ai/api-reference/server/services/transport/websocket-server), [WhatsApp](https://docs.pipecat.ai/api-reference/server/services/transport/whatsapp), Local |
| Serializers | [Exotel](https://docs.pipecat.ai/api-reference/server/services/serializers/exotel), [Genesys](https://docs.pipecat.ai/api-reference/server/services/serializers/genesys), [Plivo](https://docs.pipecat.ai/api-reference/server/services/serializers/plivo), [Twilio](https://docs.pipecat.ai/api-reference/server/services/serializers/twilio), [Telnyx](https://docs.pipecat.ai/api-reference/server/services/serializers/telnyx), [Vonage](https://docs.pipecat.ai/api-reference/server/services/serializers/vonage) |
| Video | [HeyGen](https://docs.pipecat.ai/api-reference/server/services/video/heygen), [LemonSlice](https://docs.pipecat.ai/api-reference/server/services/transport/lemonslice), [Tavus](https://docs.pipecat.ai/api-reference/server/services/video/tavus), [Simli](https://docs.pipecat.ai/api-reference/server/services/video/simli) |
| Memory | [mem0](https://docs.pipecat.ai/api-reference/server/services/memory/mem0) |

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- Added `VonageVideoConnectorTransport`, a new transport integration for real-time Vonage WebRTC sessions using the Vonage Video Connector library.

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- Fixed Azure TTS last word being missed by observers and RTVI UI. The completion signal was racing with word timestamp processing, causing the final word's `TTSTextFrame` to arrive after `TTSStoppedFrame`. Completion is now routed through the word boundary queue to ensure all words are processed before signaling stream end.

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- Fixed `BaseOutputTransport` reordering frames that share the same presentation timestamp. Frames with equal PTS values are now emitted in insertion order, preventing subtle audio/text sequencing bugs when multiple frames arrive at the same time.

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- Fixed Cartesia word timestamps leaking SSML tag text (e.g. `<spell>`, `<emotion>`, `<break>`) into word entries. Tags are now stripped before processing, so word-to-text attribution remains accurate when SSML markup is present in the TTS input.

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- Fixed `TTSTextFrame` entries losing their original text structure when word timestamps are enabled. Each `TTSTextFrame` now carries a `raw_text` field containing the corresponding span of the original LLM-produced text (including pattern delimiters such as `<card>4111 1111 1111 1111</card>`), so the assistant context receives properly-tagged content rather than the cleaned words returned by the TTS provider. Also handles words that straddle two sentence boundaries by splitting them and attributing each part to its correct source frame.

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- Fixed skipped TTS frames (e.g. code blocks filtered via `skip_aggregator_types`) being emitted to the assistant context immediately instead of waiting for preceding spoken frames to finish. They now hold their position in the frame sequence and are flushed only after all earlier spoken sentences are complete, keeping context ordering correct.

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- Added a `session_id` field to `RunnerArguments` so bots can log or trace a per-session identifier in local development the same way they can in Pipecat Cloud. The development runner now mints a UUID at every construction site, and paths that already returned a `sessionId` to the caller (Daily `/start`, dial-in webhook) share that same UUID with the runner args instead of generating two. The SmallWebRTC `/api/offer` endpoint also accepts an optional `session_id` query parameter so the `/sessions/{session_id}/...` proxy can thread it through.

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- Updated the default `SonioxTTSService` model from `tts-rt-v1-preview` to the generally available `tts-rt-v1`.

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- Added a `max_buffer_delay_ms` constructor argument to `CartesiaTTSService` for controlling Cartesia's server-side text buffering. When unset, Pipecat picks a sensible default based on `text_aggregation_mode`: `0` in `SENTENCE` mode (custom buffering — avoids stacking client-side aggregation on top of Cartesia's default 3000ms server buffer) and unset in `TOKEN` mode (Cartesia's managed buffering applies). Pass an explicit value (05000ms) to override.

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- Default `cartesia_version` for `CartesiaTTSService` bumped from `2025-04-16` to `2026-03-01`, matching `CartesiaHttpTTSService` and unlocking the `use_normalized_timestamps` and `max_buffer_delay_ms` fields.

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- ⚠️ `CartesiaTTSService` now sends `use_normalized_timestamps: true` instead of the deprecated `use_original_timestamps` field. Word timestamps now reflect what was actually spoken (post text-normalization and pronunciation-dictionary substitution), matching the convention Pipecat uses for ElevenLabs. This is a behavior change for `sonic-3` users, who were previously receiving timestamps tied to the input transcript.

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- Fixed `CartesiaHttpTTSService` pushing two `ErrorFrame`s on a non-200 response — one with the API's error text and a second, less informative "Unknown error" frame from the outer exception handler. It now pushes a single frame that includes the HTTP status code and returns cleanly.

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- Fixed Cartesia tag helpers (`SPELL`, `EMOTION_TAG`, `PAUSE_TAG`, `VOLUME_TAG`, `SPEED_TAG`) raising `TypeError` when called on an instance (e.g. `tts.SPELL("hi")`). They're now `@staticmethod` and callable from both the class and an instance.

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- Fixed `CartesiaTTSService` surfacing `flush_done` messages from Cartesia as `ErrorFrame`s. The latest API emits a `flush_done` per transcript when server-side buffering is disabled; Pipecat now consumes them silently since each turn already has its own `context_id`.

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- Fixed an issue where `LocalSmartTurnAnalyzerV3` was imported unconditionally for user turn stop strategies. It is now only imported when `default_user_turn_stop_strategies()` is called. This improves startup time and removes the `transformers` "PyTorch/TensorFlow/Flax not found" warning when the default stop strategies are not used.

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- Broadened `tool_resources` to `app_resources` for easy access not just in tool handlers but in other places like custom `FrameProcessor`s. Three changes: a rename (`tool_resources``app_resources`), a new `app_resources` property on `PipelineTask`, and a new `pipeline_task` property on `FrameProcessor`. Tool handlers now read `params.app_resources`; custom processors read `self.pipeline_task.app_resources`. The previous `tool_resources` aliases (on `PipelineTask`, `FunctionCallParams`, and `FrameProcessorSetup`) keep working but are deprecated as of 1.2.0 and emit `DeprecationWarning`s.

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- Lowered the per-message log in `SmallWebRTCInputTransport._handle_app_message` from `debug` to `trace`. App messages can be high-frequency and were noisy at debug level; set the loguru level to `TRACE` to see them again.

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- Added a `mip_opt_out` constructor argument to `DeepgramTTSService` and `DeepgramHttpTTSService` so callers can opt out of the Deepgram Model Improvement Program. When set, the value is forwarded to Deepgram as a query parameter on the speak request. Defaults to `None`, which preserves the existing behavior. See https://dpgr.am/deepgram-mip for pricing implications before enabling.

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- Changed the default model for `GrokRealtimeLLMService` to `grok-voice-think-fast-1.0`, xAI's recommended Voice Agent model. The previous default of `grok-voice-fast-1.0` has been deprecated by xAI and is being removed.

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- Fixed `GrokRealtimeLLMService` ignoring the configured model. The model was stored in `Settings` but never sent to xAI, so every session silently fell back to xAI's server-side default. The model is now passed via the `?model=` query parameter on the WebSocket URL as xAI's Voice Agent API requires.

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- Added an opt-in `add_tool_change_messages` flag to the LLM aggregators (set via `LLMContextAggregatorPair(..., add_tool_change_messages=True)`) that appends a developer-role message to the context whenever `LLMSetToolsFrame` changes the set of advertised standard tools. Helps the LLM stay coherent across mid-conversation tool changes, mitigating several flavors of tool-call-related hallucination: calling tools that have been removed, avoiding tools that have been re-added, and hallucinating output (made-up answers or tool-call-shaped non-tool-calls) when tools are unavailable.

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- Added `LLMTurnCompletionUserTurnStopStrategy` in `pipecat.turns.user_stop`. When installed, the strategy gates `on_user_turn_stopped` on a `UserTurnInferenceCompletedFrame` (a new fieldless system frame emitted by any component that can judge turn completeness — e.g. the `UserTurnCompletionLLMServiceMixin` on `✓`). A `finalization_timeout` provides a safety net if no completion frame ever arrives.

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- Added `deferred(strategy)` and `DeferredUserTurnStopStrategy` in `pipecat.turns.user_stop`. Wraps a stop strategy so it fires only the inference-triggered event and suppresses `on_user_turn_stopped`, leaving finalization to another strategy in the chain such as `LLMTurnCompletionUserTurnStopStrategy`.

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- Added `FilterIncompleteUserTurnStrategies` in `pipecat.turns.user_turn_strategies` — a `UserTurnStrategies` specialization that wraps the detector chain with `deferred(...)` and appends `LLMTurnCompletionUserTurnStopStrategy` as the finalizer. Common case: `user_turn_strategies=FilterIncompleteUserTurnStrategies()`. Pass `config=UserTurnCompletionConfig(...)` to customize timeouts and prompts.

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- Added `ExternalUserTurnCompletionStopStrategy` in `pipecat.turns.user_stop` — a generic stop strategy that finalizes the user turn whenever a `UserTurnInferenceCompletedFrame` arrives, regardless of which component produced it. `LLMTurnCompletionUserTurnStopStrategy` now extends this base; future producers (Flux, custom end-of-turn classifiers, etc.) can use the base directly or subclass it to add producer-specific setup.

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- Added `on_user_turn_inference_triggered`, a new event on the user turn controller, processor, aggregator and stop strategies that fires when a strategy has enough signal to start LLM inference. By default it fires together with `on_user_turn_stopped`; a gating strategy can fire only the inference-triggered event and defer finalization to a peer.

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- Deprecated `LLMUserAggregatorParams.filter_incomplete_user_turns`. Use `user_turn_strategies=FilterIncompleteUserTurnStrategies()` (or add `LLMTurnCompletionUserTurnStopStrategy` to a custom `user_turn_strategies.stop`) instead. Setting the legacy flag still works for one release: the aggregator emits a `DeprecationWarning` and rewires the strategies as if you had passed `FilterIncompleteUserTurnStrategies` directly.

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- Fixed `on_user_turn_stopped` firing prematurely when `filter_incomplete_user_turns` was enabled. The event now fires only after the LLM confirms the user turn is complete (`✓`); previously the smart-turn detector's tentative stop was bubbling up before the LLM had a chance to veto it, causing observers, transcript appenders and UI indicators to receive an early — and sometimes duplicated — signal.

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- Added first-class RTVI support for the UI Agent Protocol:
- Adds `ui-event`, `ui-snapshot`, and `ui-cancel-task` client-to-server messages, plus `ui-command` and `ui-task` server-to-client messages, with paired `*Data` / `*Message` pydantic models.
- Adds built-in command payload models for `Toast`, `Navigate`, `ScrollTo`, `Highlight`, `Focus`, `Click`, `SetInputValue`, and `SelectText`; matching default handlers live in `@pipecat-ai/client-react`.
- Adds `RTVIProcessor.on_ui_message` for inbound `ui-event`, `ui-snapshot`, and `ui-cancel-task` messages.
- Adds five UI pipeline frames, mirroring the `client-message` frame-and-event pattern: downstream code pushes `RTVIUICommandFrame` / `RTVIUITaskFrame` for the observer to wrap into outbound `UICommandMessage` / `UITaskMessage` envelopes, while the processor pushes inbound `RTVIUIEventFrame`, `RTVIUISnapshotFrame`, and `RTVIUICancelTaskFrame` alongside `on_ui_message`.
- Bumps the RTVI `PROTOCOL_VERSION` from `1.2.0` to `1.3.0`.

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- Fixed `TTSSpeakFrame(append_to_context=True)` greetings sometimes splitting across two assistant messages in the LLM context and not surfacing in `on_assistant_turn_stopped`. The `LLMAssistantPushAggregationFrame` emitted at the end of a TTS context now carries a PTS just past the last word so it can't overtake clock-queued `TTSTextFrame`s in the transport's output, and `LLMAssistantAggregator` now triggers `on_assistant_turn_started`/`on_assistant_turn_stopped` when it receives the frame outside an LLM response cycle (restoring v0.0.104 behavior for greeting transcripts).

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- Fixed `ElevenLabsTTSService` and `ElevenLabsHttpTTSService` producing merged words (e.g. `bookLook`) when using Flash models. Flash often splits sentences mid-stream into alignment chunks that begin with a real inter-word space, but the previous fix unconditionally stripped that space from every chunk. Leading spaces are now stripped only on the first alignment chunk of an utterance, so subsequent chunks correctly flush partial words across boundaries.

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- AWS Transcribe STT, Polly TTS, Bedrock LLM, and the Bedrock AgentCore processor now resolve credentials via the standard boto3 provider chain (EC2 instance profiles, EKS pod roles / IRSA, ECS task roles, SSO, `~/.aws/credentials`) when explicit credentials and `AWS_*` environment variables are absent. Services running with IAM roles no longer need to export static credentials.

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- Fixed AWS Polly TTS, Bedrock LLM, and the Bedrock AgentCore processor erroring out when only one of `AWS_ACCESS_KEY_ID` / `AWS_SECRET_ACCESS_KEY` was set in the environment. The half-populated kwargs are no longer forwarded to aioboto3; partial env-var configurations now fall through to the boto3 credential chain like fully-unset configurations do.

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- Fixed a path traversal issue in the development runner's `/files/{filename:path}` download endpoint. Previously, when the runner was started with `--folder`, a request like `/files/..%2F..%2Fetc%2Fpasswd` could escape the configured folder because `%2F`-encoded separators bypassed Starlette's path normalisation. The endpoint now resolves the joined path and rejects any filename that escapes the allowed base with a 403, and also returns 404 (instead of an implicit `null` 200) when `--folder` is unset.

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- Changed the default Inworld TTS model from `inworld-tts-1.5-max` to `inworld-tts-2` (Realtime TTS-2) across `InworldHttpTTSService`, `InworldTTSService`, and the `InworldRealtimeLLMService` cascade. Existing users can pin the prior model explicitly via the `model`/`tts_model` argument; both `inworld-tts-1.5-max` and `inworld-tts-1.5-mini` remain valid model IDs.

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- Added `InceptionLLMService` for Inception's Mercury 2 diffusion reasoning model, with support for `reasoning_effort` and `realtime` settings.

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- Fixed `ElevenLabsTTSService` and `ElevenLabsHttpTTSService` writing romanized/normalized text to the LLM context. With non-Latin input (e.g., Chinese), the assistant transcript was getting populated with pinyin (`Ni Hao !` instead of `你好!`), which then degraded subsequent LLM turns. The services now consume `alignment` by default and only switch to `normalizedAlignment` / `normalized_alignment` when `pronunciation_dictionary_locators` is configured (where `alignment` has overlapping restarts that produce duplicated/garbled words, per #4316). Both fields are read with preferred-with-fallback semantics since each is nullable per the API schema.

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- Added `keyterms` support to ElevenLabs STT services so Scribe V2 callers can bias transcription for both file-based and realtime transcription.

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- Deprecated `ResampyResampler` in favor of `SOXRAudioResampler` (or the `create_file_resampler()` / `create_stream_resampler()` factories). Instantiating `ResampyResampler` now emits a `DeprecationWarning`. The class will be removed in Pipecat 2.0 along with the default `resampy` and `numba` dependencies.

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- Changed the default model for `GrokLLMService` from `grok-3` to `grok-4.20-non-reasoning`. xAI is retiring `grok-3` on May 15, 2026.

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- Added `watchdog_min_timeout` parameter to `DeepgramFluxSTT` and `DeepgramFluxSageMakerSTT` (default `0.5` seconds) to control the minimum silence duration before the watchdog sends a silence packet to prevent dangling turns. The actual threshold is `max(chunk_duration * 2, watchdog_min_timeout)`, so it also adapts automatically to the audio chunk size in use.

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- `DeepgramFluxSTT` watchdog silence threshold is now dynamic: `max(chunk_duration * 2, watchdog_min_timeout)` instead of a fixed 500 ms. This prevents false silence injections when large audio chunks are sent at lower frequency.

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- Fixed a deadlock in `TTSService` that could permanently stall pipeline processing when all three conditions occurred together: `pause_frame_processing=True`, an interruption arrived before any TTS audio was played, and an `UninterruptibleFrame` (e.g. `TTSUpdateSettingsFrame`, `FunctionCallResultFrame`) was in the processing queue at that moment. The process task would block on `__process_event.wait()` indefinitely because `BotStoppedSpeakingFrame` never arrives (no audio was played) and the interruption handler did not resume processing. Affects services using `pause_frame_processing=True` such as ElevenLabs, Rime, AsyncAI, Gradium, and ResembleAI.

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- `ElevenLabsTTSService` now sends `close_context` to the server as soon as the turn is complete (on `on_turn_context_completed`) rather than waiting until all audio has finished playing back. The `isFinal` message from ElevenLabs is now used to signal `TTSStoppedFrame` and clean up the audio context, improving turn transition timing.

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- Fixed interruptions being delayed when a slow non-uninterruptible frame was processing and an uninterruptible frame was waiting in the queue. The bot would stall until the slow frame finished instead of cancelling it immediately on interruption.

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- Fixed `TTSService` dropping uninterruptible frames (e.g. `FunctionCallResultFrame`) from its internal serialization queue when an interruption occurs. Previously, the queue was recreated on every interruption, silently discarding any queued frames. The queue is now reset instead of recreated, preserving uninterruptible frames so they are always delivered downstream.

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- Fixed a race condition in the Daily transport that caused `AttributeError: 'NoneType' object has no attribute 'send_app_message'` when tearing down a pipeline. Both `DailyInputTransport` and `DailyOutputTransport` share the same `DailyTransportClient` and both call `cleanup()`, which was releasing the underlying `CallClient` on the first call — leaving the second caller with a `None` client.

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- Restored `cancel_on_interruption=False` support for `AWSNovaSonicLLMService` and `OpenAIRealtimeLLMService`. These services previously honored the flag by simply not cancelling in-flight function calls on interruption; the introduction of the new async-tool mechanism (which threads started/intermediate/final messages through the LLM context) broke that path because the realtime services didn't know how to interpret those messages. Note that new-style streamed intermediate results (`FunctionCallResultProperties(is_final=False)`) are not supported on these realtime services. Similar fixes for other impacted realtime services are forthcoming.

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- Added `GET /status` endpoint to the development runner that reports which transports the running instance accepts (all by default, or the single transport passed via `-t`).

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- Added plain WebSocket transport support to the development runner. Bots can now accept connections from non-telephony WebSocket clients (e.g., browser apps using protobuf framing) via the `/ws-client` endpoint alongside other transports.

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- ⚠️ The development runner now supports all transports (WebRTC, Daily, telephony, plain WebSocket) simultaneously from a single server. The `/start` endpoint accepts a `"transport"` field to select the transport per-request; omitting `-t` at startup enables all transports instead of defaulting to WebRTC. The Daily browser-redirect route moved from `GET /` to `GET /daily`.

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- Fixed two misspelled Gemini TTS voice names in `GeminiTTSService.AVAILABLE_VOICES`.

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- Updated `InworldHttpTTSService` and `InworldTTSService` to use PCM audio encoding by default, which returns audio bytes without headers.

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- Extended the `cancel_on_interruption=False` regression fix to `GrokRealtimeLLMService`, `AzureRealtimeLLMService`, and `UltravoxRealtimeLLMService`. Grok and Azure use the same approach as in #4441 (each service detects async-tool messages in the LLM context and routes the final result to its formal tool-result channel; Azure inherits transitively from `OpenAIRealtimeLLMService`). Ultravox needed a different approach because its API freezes the conversation between `client_tool_invocation` and the matching `client_tool_result` — for async-registered functions it now ships a placeholder `client_tool_result` immediately when the function is invoked (to unfreeze the conversation), then injects the real result as user-side text once the tool finishes. Streamed intermediate results (`FunctionCallResultProperties(is_final=False)`) are still not supported on any of these realtime services. `GeminiLiveLLMService` and `InworldRealtimeLLMService` are excluded for now: Gemini Live's async-tool path needs deeper investigation, and Inworld appears to have a pre-existing problem with even simple tool calling on its Realtime API.

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- Added `cancel_on_interruption=False` support for `GeminiLiveLLMService` on models that support Gemini's NON_BLOCKING tool mechanism (currently Gemini 2.x); the conversation now continues while the tool runs. On models that don't yet support NON_BLOCKING (Gemini 3.x), the service surfaces a one-time warning explaining the limitation. (Note: an intermittent 1008 error can occasionally fire on Gemini 2.5 during long-running tool calls; we auto-reconnect.)

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- Moved `create_task`, `cancel_task`, the `task_manager` property, and `setup(task_manager)` up from `FrameProcessor` to `BaseObject`. Custom `BaseObject` subclasses (turn strategies, controllers, etc.) now inherit these methods directly instead of reimplementing the task manager wiring. Owners propagate the task manager to their child `BaseObject`s via `await child.setup(task_manager)`.

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- Changed the default OpenAI Realtime input audio transcription model from `gpt-4o-transcribe` to `gpt-realtime-whisper` for both `OpenAIRealtimeSTTService` and `OpenAIRealtimeLLMService`. The new model does not accept the `prompt` parameter; if a prompt is supplied alongside `gpt-realtime-whisper`, it is dropped automatically and a warning is logged. To keep using prompt hints, explicitly pin `model="gpt-4o-transcribe"` (or `"gpt-4o-mini-transcribe"`).

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- Updated the default model for `CartesiaTTSService` and `CartesiaHttpTTSService` from `sonic-3` to `sonic-3.5`.

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- Added NVIDIA Magpie TTS services via AWS SageMaker: `NvidiaSageMakerHTTPTTSService` (single HTTP invocation, streams raw PCM back) and `NvidiaSageMakerWebsocketTTSService` (persistent HTTP/2 bidi-stream with full interruption support via `InterruptibleTTSService`).

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- Added `NvidiaSageMakerWebsocketSTTService` for streaming speech recognition using NVIDIA Nemotron ASR via an AWS SageMaker bidirectional-stream endpoint. Produces `InterimTranscriptionFrame` and `TranscriptionFrame` frames, is VAD-aware, and automatically reconnects on error.

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- Fixed `OpenAIRealtimeLLMService` handling of multi-output-item responses (observed with `gpt-realtime-2`). A single response can now contain more than one audio item, and the first item's `audio.done` may arrive after the second item's deltas have started. Deltas still arrive strictly in playback order, so we continue to forward them as received (matching OpenAI's reference implementation). The fix removes spurious warnings, ensures truncation always targets the latest audio item, and emits a single bracketing `TTSStartedFrame`/`TTSStoppedFrame` pair per assistant turn (the Stopped is now pushed on `response.done`).

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- Added support for `reasoning` configuration on `OpenAIRealtimeLLMService`, for use with reasoning-capable Realtime models such as `gpt-realtime-2`.

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- Changed the default model for `OpenAIRealtimeLLMService` from `gpt-realtime-1.5` to `gpt-realtime-2`.

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- Added `wait_for_transcript_to_end_user_turn` on `LLMUserAggregatorParams` for pipelines where local turn detection drives a realtime service like Gemini Live. Set it to False to avoid unnecessary latency from transcript delay — the realtime service consumes user audio directly, so we don't need user transcripts in context before it can respond. The option makes it so that (1) turn strategies do not consider user transcripts, letting the user turn end sooner, and (2) user transcripts are then handled by the aggregator: a simple timer gives it time to gather those transcripts after the user turn ends, and once gathered, the aggregator emits a new `on_user_turn_message_finalized` event with the new user context message. The new event also fires in the default mode (coinciding with `on_user_turn_stopped`), so consumers that want the populated user transcript can subscribe to it uniformly. See `examples/realtime/realtime-gemini-live-local-vad.py` for the full pattern.

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- Fixed `ElevenLabsSTTService` crashing when `language` was passed as `None`. When `language` is not set, the service now lets ElevenLabs auto-detect the audio language.

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- Fixed websocket STT connection setup failures so services clear stale websocket state and emit non-fatal error frames, allowing `ServiceSwitcher` failover to keep agents running.

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- Added `max_endpoint_delay_ms` to `SonioxSTTService.Settings`, controlling the maximum delay (500-3000 ms) before endpoint detection finalizes a turn.

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- `SonioxSTTService` now applies settings updates (e.g. via `STTUpdateSettingsFrame`) using a graceful reconnect instead of a hard disconnect/reconnect, preserving the service's reconnect retry behavior.

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- Removed the unsupported Georgian (`Language.KA`) language mapping from `SonioxSTTService`.

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- Updated the default p99 TTFS latency values for Smallest AI, Mistral, and XAI STT so turn stop timing uses measured values instead of the conservative fallback.

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- Updated the development runner startup banner to show the prebuilt client URL once and list enabled or disabled transports with install hints.

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- Fixed the development runner so missing optional transport dependencies disable only their related routes instead of failing startup in all-transport mode.

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- Fixed a race in `ElevenLabsTTSService` where the periodic keepalive could be sent for a new turn's context before that context's `voice_settings` initialization message, causing ElevenLabs to close the WebSocket with a 1008 policy violation (`voice_settings field must be provided in the first message ...`). The keepalive now only targets a context once its context-init has been sent.

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- Bumped `pipecat-ai-prebuilt` to 1.0.1 in the `runner` extra, updating the prebuilt client UI served by the development runner.

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@@ -91,9 +91,6 @@ HEYGEN_LIVE_AVATAR_API_KEY=...
HUME_API_KEY=...
HUME_VOICE_ID=...
# Inception
INCEPTION_API_KEY=...
# Inworld
INWORLD_API_KEY=...
@@ -214,11 +211,6 @@ TWILIO_AUTH_TOKEN=...
# Ultravox Realtime
ULTRAVOX_API_KEY=...
# Vonage
VONAGE_APPLICATION_ID=...
VONAGE_SESSION_ID=...
VONAGE_TOKEN=...
# WhatsApp
WHATSAPP_TOKEN=...
WHATSAPP_WEBHOOK_VERIFICATION_TOKEN=...

View File

@@ -1,177 +0,0 @@
#
# Copyright (c) 2024-2026, Daily
#
# SPDX-License-Identifier: BSD 2-Clause License
#
import os
from dotenv import load_dotenv
from loguru import logger
from pipecat.adapters.schemas.function_schema import FunctionSchema
from pipecat.adapters.schemas.tools_schema import ToolsSchema
from pipecat.audio.vad.silero import SileroVADAnalyzer
from pipecat.frames.frames import LLMRunFrame, TTSSpeakFrame
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.runner import PipelineRunner
from pipecat.pipeline.task import PipelineParams, PipelineTask
from pipecat.processors.aggregators.llm_context import LLMContext
from pipecat.processors.aggregators.llm_response_universal import (
LLMContextAggregatorPair,
LLMUserAggregatorParams,
)
from pipecat.runner.types import RunnerArguments
from pipecat.runner.utils import create_transport
from pipecat.services.cartesia.tts import CartesiaTTSService
from pipecat.services.deepgram.stt import DeepgramSTTService
from pipecat.services.inception.llm import InceptionLLMService
from pipecat.services.llm_service import FunctionCallParams
from pipecat.transports.base_transport import BaseTransport, TransportParams
from pipecat.transports.daily.transport import DailyParams
from pipecat.transports.websocket.fastapi import FastAPIWebsocketParams
load_dotenv(override=True)
async def fetch_weather_from_api(params: FunctionCallParams):
await params.result_callback({"conditions": "nice", "temperature": "75"})
async def fetch_restaurant_recommendation(params: FunctionCallParams):
await params.result_callback({"name": "The Golden Dragon"})
# We use lambdas to defer transport parameter creation until the transport
# type is selected at runtime.
transport_params = {
"daily": lambda: DailyParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
"twilio": lambda: FastAPIWebsocketParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
"webrtc": lambda: TransportParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
}
async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
logger.info(f"Starting bot")
stt = DeepgramSTTService(api_key=os.environ["DEEPGRAM_API_KEY"])
tts = CartesiaTTSService(
api_key=os.environ["CARTESIA_API_KEY"],
settings=CartesiaTTSService.Settings(
voice="71a7ad14-091c-4e8e-a314-022ece01c121", # British Reading Lady
),
)
llm = InceptionLLMService(
api_key=os.environ["INCEPTION_API_KEY"],
settings=InceptionLLMService.Settings(
reasoning_effort="instant",
system_instruction="You are a helpful assistant in a voice conversation. Your responses will be spoken aloud, so avoid emojis, bullet points, or other formatting that can't be spoken. Respond to what the user said in a creative, helpful, and brief way.",
),
)
# You can also register a function_name of None to get all functions
# sent to the same callback with an additional function_name parameter.
llm.register_function("get_current_weather", fetch_weather_from_api)
llm.register_function("get_restaurant_recommendation", fetch_restaurant_recommendation)
@llm.event_handler("on_function_calls_started")
async def on_function_calls_started(service, function_calls):
await tts.queue_frame(TTSSpeakFrame("Let me check on that."))
weather_function = FunctionSchema(
name="get_current_weather",
description="Get the current weather",
properties={
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA",
},
"format": {
"type": "string",
"enum": ["celsius", "fahrenheit"],
"description": "The temperature unit to use. Infer this from the user's location.",
},
},
required=["location", "format"],
)
restaurant_function = FunctionSchema(
name="get_restaurant_recommendation",
description="Get a restaurant recommendation",
properties={
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA",
},
},
required=["location"],
)
tools = ToolsSchema(standard_tools=[weather_function, restaurant_function])
context = LLMContext(tools=tools)
user_aggregator, assistant_aggregator = LLMContextAggregatorPair(
context,
user_params=LLMUserAggregatorParams(vad_analyzer=SileroVADAnalyzer()),
)
pipeline = Pipeline(
[
transport.input(),
stt,
user_aggregator,
llm,
tts,
transport.output(),
assistant_aggregator,
]
)
task = PipelineTask(
pipeline,
params=PipelineParams(
enable_metrics=True,
enable_usage_metrics=True,
),
idle_timeout_secs=runner_args.pipeline_idle_timeout_secs,
)
@transport.event_handler("on_client_connected")
async def on_client_connected(transport, client):
logger.info(f"Client connected")
# Kick off the conversation.
context.add_message(
{"role": "developer", "content": "Please introduce yourself to the user."}
)
await task.queue_frames([LLMRunFrame()])
@transport.event_handler("on_client_disconnected")
async def on_client_disconnected(transport, client):
logger.info(f"Client disconnected")
await task.cancel()
runner = PipelineRunner(handle_sigint=runner_args.handle_sigint)
await runner.run(task)
async def bot(runner_args: RunnerArguments):
"""Main bot entry point compatible with Pipecat Cloud."""
transport = await create_transport(runner_args, transport_params)
await run_bot(transport, runner_args)
if __name__ == "__main__":
from pipecat.runner.run import main
main()

View File

@@ -68,9 +68,9 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
tts = OpenAITTSService(
api_key=os.environ["OPENAI_API_KEY"],
settings=OpenAITTSService.Settings(
instructions="Please speak clearly and at a moderate pace.",
voice="ballad",
),
instructions="Please speak clearly and at a moderate pace.",
)
llm = OpenAILLMService(

View File

@@ -71,8 +71,8 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
llm = QwenLLMService(
api_key=os.environ["QWEN_API_KEY"],
model="qwen2.5-72b-instruct",
settings=QwenLLMService.Settings(
model="qwen2.5-72b-instruct",
system_instruction="You are a helpful assistant in a voice conversation. Your responses will be spoken aloud, so avoid emojis, bullet points, or other formatting that can't be spoken. Respond to what the user said in a creative, helpful, and brief way.",
),
)

View File

@@ -20,6 +20,7 @@ from pipecat.processors.aggregators.llm_response_universal import (
AssistantTurnStoppedMessage,
LLMContextAggregatorPair,
LLMUserAggregatorParams,
UserMessageFinalizedMessage,
UserTurnStoppedMessage,
)
from pipecat.runner.types import RunnerArguments
@@ -70,10 +71,25 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
},
],
)
# `wait_for_transcript_to_end_user_turn=False` is the right setting
# for pipelines like this one — local turn detection driving a
# realtime service. It avoids unnecessary latency from transcript
# delay: the realtime service consumes user audio directly, so
# we don't need user transcripts in context before it can respond.
# With this option:
#
# - Turn strategies do not consider user transcripts, so the user
# turn ends sooner.
# - User transcripts are handled by the aggregator: a simple
# post-turn transcript wait gives them time to arrive after the
# user turn ends, then the aggregator emits
# `on_user_turn_message_finalized` with the new user context
# message.
user_aggregator, assistant_aggregator = LLMContextAggregatorPair(
context,
user_params=LLMUserAggregatorParams(
vad_analyzer=SileroVADAnalyzer(),
wait_for_transcript_to_end_user_turn=False,
),
)
@@ -107,8 +123,23 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
logger.info(f"Client disconnected")
await task.cancel()
# `on_user_turn_stopped` fires at the end of the user turn. With
# `wait_for_transcript_to_end_user_turn=False`, no user
# transcripts have arrived yet at this point, so
# `message.content` is empty. Logged here to make the end-of-turn
# signal visible alongside the later finalization event.
@user_aggregator.event_handler("on_user_turn_stopped")
async def on_user_turn_stopped(aggregator, strategy, message: UserTurnStoppedMessage):
logger.info(f"User turn ended (strategy: {type(strategy).__name__})")
# `on_user_turn_message_finalized` fires when the user message has
# been finalized into the context. Here it fires later than
# `on_user_turn_stopped`, after the aggregator's post-turn
# transcript wait completes.
@user_aggregator.event_handler("on_user_turn_message_finalized")
async def on_user_turn_message_finalized(
aggregator, strategy, message: UserMessageFinalizedMessage
):
timestamp = f"[{message.timestamp}] " if message.timestamp else ""
line = f"{timestamp}user: {message.content}"
logger.info(f"Transcript: {line}")

View File

@@ -28,14 +28,10 @@ Usage:
"""
import os
import random
from datetime import datetime
from dotenv import load_dotenv
from loguru import logger
from pipecat.adapters.schemas.function_schema import FunctionSchema
from pipecat.adapters.schemas.tools_schema import ToolsSchema
from pipecat.frames.frames import LLMRunFrame
from pipecat.observers.loggers.transcription_log_observer import (
TranscriptionLogObserver,
@@ -52,7 +48,6 @@ from pipecat.processors.aggregators.llm_response_universal import (
from pipecat.runner.types import RunnerArguments
from pipecat.runner.utils import create_transport
from pipecat.services.inworld.realtime.llm import InworldRealtimeLLMService
from pipecat.services.llm_service import FunctionCallParams
from pipecat.transports.base_transport import BaseTransport, TransportParams
from pipecat.transports.daily.transport import DailyParams
from pipecat.transports.websocket.fastapi import FastAPIWebsocketParams
@@ -60,43 +55,6 @@ from pipecat.transports.websocket.fastapi import FastAPIWebsocketParams
load_dotenv(override=True)
async def fetch_weather_from_api(params: FunctionCallParams):
temperature = (
random.randint(60, 85)
if params.arguments["format"] == "fahrenheit"
else random.randint(15, 30)
)
await params.result_callback(
{
"conditions": "nice",
"temperature": temperature,
"location": params.arguments["location"],
"format": params.arguments["format"],
"timestamp": datetime.now().strftime("%Y%m%d_%H%M%S"),
}
)
weather_function = FunctionSchema(
name="get_current_weather",
description="Get the current weather",
properties={
"location": {
"type": "string",
"description": "The city and state, e.g. San Francisco, CA",
},
"format": {
"type": "string",
"enum": ["celsius", "fahrenheit"],
"description": "The temperature unit to use. Infer this from the users location.",
},
},
required=["location", "format"],
)
tools = ToolsSchema(standard_tools=[weather_function])
# --- Transport Configuration ---
# No local VAD needed — Inworld's server-side semantic VAD handles turn detection.
@@ -127,7 +85,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
# See: https://docs.inworld.ai/router/introduction
llm = InworldRealtimeLLMService(
api_key=os.environ["INWORLD_API_KEY"],
llm_model="openai/gpt-4.1-mini",
llm_model="xai/grok-4-1-fast-non-reasoning",
voice="Sarah",
settings=InworldRealtimeLLMService.Settings(
system_instruction="""You are a helpful and friendly AI assistant powered by Inworld.
@@ -139,14 +97,9 @@ Always be helpful and proactive in offering assistance.""",
),
)
# Note: function calling requires a paid Inworld account and a
# function-calling-capable model
llm.register_function("get_current_weather", fetch_weather_from_api)
# Create context with initial message + tools
# Create context with initial message
context = LLMContext(
[{"role": "developer", "content": "Say hello and introduce yourself!"}],
tools,
)
user_aggregator, assistant_aggregator = LLMContextAggregatorPair(context)

View File

@@ -0,0 +1,182 @@
#
# Copyright (c) 2024-2026, Daily
#
# SPDX-License-Identifier: BSD 2-Clause License
#
import os
from dotenv import load_dotenv
from loguru import logger
from pipecat.audio.vad.silero import SileroVADAnalyzer
from pipecat.frames.frames import LLMRunFrame
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.runner import PipelineRunner
from pipecat.pipeline.task import PipelineParams, PipelineTask
from pipecat.processors.aggregators.llm_context import LLMContext
from pipecat.processors.aggregators.llm_response_universal import (
AssistantTurnStoppedMessage,
LLMContextAggregatorPair,
LLMUserAggregatorParams,
UserMessageFinalizedMessage,
UserTurnStoppedMessage,
)
from pipecat.runner.types import RunnerArguments
from pipecat.runner.utils import create_transport
from pipecat.services.openai.realtime.events import (
AudioConfiguration,
AudioInput,
InputAudioTranscription,
SessionProperties,
)
from pipecat.services.openai.realtime.llm import OpenAIRealtimeLLMService
from pipecat.transports.base_transport import BaseTransport, TransportParams
from pipecat.transports.daily.transport import DailyParams
from pipecat.transports.websocket.fastapi import FastAPIWebsocketParams
load_dotenv(override=True)
# We use lambdas to defer transport parameter creation until the transport
# type is selected at runtime.
transport_params = {
"daily": lambda: DailyParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
"twilio": lambda: FastAPIWebsocketParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
"webrtc": lambda: TransportParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
}
async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
logger.info(f"Starting bot")
# `turn_detection=False` disables OpenAI Realtime's server-side VAD,
# so this pipeline's local turn detection drives turn boundaries.
# The service then sends `input_audio_buffer.commit` +
# `response.create` when it sees `UserStoppedSpeakingFrame`.
llm = OpenAIRealtimeLLMService(
api_key=os.environ["OPENAI_API_KEY"],
settings=OpenAIRealtimeLLMService.Settings(
session_properties=SessionProperties(
audio=AudioConfiguration(
input=AudioInput(
transcription=InputAudioTranscription(),
turn_detection=False,
),
),
),
),
)
context = LLMContext(
[
{
"role": "developer",
"content": "Say hello. Then ask if I want to hear a joke.",
},
],
)
# `wait_for_transcript_to_end_user_turn=False` is the right setting
# for pipelines like this one — local turn detection driving a
# realtime service. It avoids unnecessary latency from transcript
# delay: the realtime service consumes user audio directly, so
# we don't need user transcripts in context before it can respond.
# With this option:
#
# - Turn strategies do not consider user transcripts, so the user
# turn ends sooner.
# - User transcripts are handled by the aggregator: a simple
# post-turn transcript wait gives them time to arrive after the
# user turn ends, then the aggregator emits
# `on_user_turn_message_finalized` with the new user context
# message.
user_aggregator, assistant_aggregator = LLMContextAggregatorPair(
context,
user_params=LLMUserAggregatorParams(
vad_analyzer=SileroVADAnalyzer(),
wait_for_transcript_to_end_user_turn=False,
),
)
pipeline = Pipeline(
[
transport.input(),
user_aggregator,
llm,
transport.output(),
assistant_aggregator,
]
)
task = PipelineTask(
pipeline,
params=PipelineParams(
enable_metrics=True,
enable_usage_metrics=True,
),
idle_timeout_secs=runner_args.pipeline_idle_timeout_secs,
)
@transport.event_handler("on_client_connected")
async def on_client_connected(transport, client):
logger.info(f"Client connected")
# Kick off the conversation.
await task.queue_frames([LLMRunFrame()])
@transport.event_handler("on_client_disconnected")
async def on_client_disconnected(transport, client):
logger.info(f"Client disconnected")
await task.cancel()
# `on_user_turn_stopped` fires at the end of the user turn. With
# `wait_for_transcript_to_end_user_turn=False`, no user
# transcripts have arrived yet at this point, so
# `message.content` is empty. Logged here to make the end-of-turn
# signal visible alongside the later finalization event.
@user_aggregator.event_handler("on_user_turn_stopped")
async def on_user_turn_stopped(aggregator, strategy, message: UserTurnStoppedMessage):
logger.info(f"User turn ended (strategy: {type(strategy).__name__})")
# `on_user_turn_message_finalized` fires when the user message has
# been finalized into the context. Here it fires later than
# `on_user_turn_stopped`, after the aggregator's post-turn
# transcript wait completes.
@user_aggregator.event_handler("on_user_turn_message_finalized")
async def on_user_turn_message_finalized(
aggregator, strategy, message: UserMessageFinalizedMessage
):
timestamp = f"[{message.timestamp}] " if message.timestamp else ""
line = f"{timestamp}user: {message.content}"
logger.info(f"Transcript: {line}")
@assistant_aggregator.event_handler("on_assistant_turn_stopped")
async def on_assistant_turn_stopped(aggregator, message: AssistantTurnStoppedMessage):
timestamp = f"[{message.timestamp}] " if message.timestamp else ""
line = f"{timestamp}assistant: {message.content}"
logger.info(f"Transcript: {line}")
runner = PipelineRunner(handle_sigint=runner_args.handle_sigint)
await runner.run(task)
async def bot(runner_args: RunnerArguments):
"""Main bot entry point compatible with Pipecat Cloud."""
transport = await create_transport(runner_args, transport_params)
await run_bot(transport, runner_args)
if __name__ == "__main__":
from pipecat.runner.run import main
main()

View File

@@ -51,6 +51,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
stt = GradiumSTTService(
api_key=os.environ["GRADIUM_API_KEY"],
api_endpoint_base_url="wss://us.api.gradium.ai/api/speech/asr",
settings=GradiumSTTService.Settings(
language=Language.EN,
delay_in_frames=8,

View File

@@ -1,134 +0,0 @@
#
# Copyright (c) 2024-2026, Daily
#
# SPDX-License-Identifier: BSD 2-Clause License
#
"""Example of using OpenAI Realtime voice LLM service with Vonage Video Connector transport."""
import asyncio
import os
import sys
from collections.abc import Callable
from typing import Any
from dotenv import load_dotenv
from loguru import logger
from pipecat.audio.vad.silero import SileroVADAnalyzer
from pipecat.frames.frames import LLMRunFrame
from pipecat.observers.loggers.transcription_log_observer import TranscriptionLogObserver
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.runner import PipelineRunner
from pipecat.pipeline.task import PipelineParams, PipelineTask
from pipecat.processors.aggregators.llm_context import LLMContext
from pipecat.processors.aggregators.llm_response_universal import (
LLMContextAggregatorPair,
LLMUserAggregatorParams,
)
from pipecat.runner.vonage import configure
from pipecat.services.openai.realtime.events import (
AudioConfiguration,
AudioInput,
InputAudioNoiseReduction,
InputAudioTranscription,
SemanticTurnDetection,
SessionProperties,
)
from pipecat.services.openai.realtime.llm import OpenAIRealtimeLLMService
from pipecat.transports.vonage.video_connector import (
VonageVideoConnectorTransport,
VonageVideoConnectorTransportParams,
)
load_dotenv(override=True)
logger.remove(0)
logger.add(sys.stderr, level="DEBUG")
async def main() -> None:
"""Main entry point for the OpenAI Realtime vonage video connector example."""
(application_id, session_id, token) = await configure()
transport = VonageVideoConnectorTransport(
application_id,
session_id,
token,
VonageVideoConnectorTransportParams(
audio_in_enabled=True,
audio_out_enabled=True,
publisher_name="Bot",
),
)
llm = OpenAIRealtimeLLMService(
api_key=os.environ["OPENAI_API_KEY"],
settings=OpenAIRealtimeLLMService.Settings(
system_instruction="""You are a helpful and friendly AI.
Act like a human, but remember that you aren't a human and that you can't do human
things in the real world. Your voice and personality should be warm and engaging, with a lively and
playful tone.
If interacting in a non-English language, start by using the standard accent or dialect familiar to
the user. Talk quickly.
You are participating in a voice conversation. Keep your responses concise, short, and to the point
unless specifically asked to elaborate on a topic.
Remember, your responses should be short. Just one or two sentences, usually. Respond in English.""",
session_properties=SessionProperties(
audio=AudioConfiguration(
input=AudioInput(
transcription=InputAudioTranscription(),
turn_detection=SemanticTurnDetection(),
noise_reduction=InputAudioNoiseReduction(type="near_field"),
)
),
),
),
)
context = LLMContext(
[{"role": "developer", "content": "Say hello!"}],
)
user_aggregator, assistant_aggregator = LLMContextAggregatorPair(
context,
user_params=LLMUserAggregatorParams(vad_analyzer=SileroVADAnalyzer()),
)
pipeline = Pipeline(
[
transport.input(),
user_aggregator,
llm,
transport.output(),
assistant_aggregator,
]
)
task = PipelineTask(
pipeline,
params=PipelineParams(
enable_metrics=True,
enable_usage_metrics=True,
),
observers=[TranscriptionLogObserver()],
)
event_handler: Callable[[str], Callable[[Any], Any]] = transport.event_handler
@event_handler("on_client_connected")
async def on_client_connected(transport: VonageVideoConnectorTransport, client: object) -> None:
logger.info("Client connected")
await task.queue_frames([LLMRunFrame()])
runner = PipelineRunner()
await runner.run(task)
if __name__ == "__main__":
asyncio.run(main())

View File

@@ -1,201 +0,0 @@
#
# Copyright (c) 2024-2026, Daily
#
# SPDX-License-Identifier: BSD 2-Clause License
#
"""Example 22: Filter Incomplete Turns
Demonstrates LLM-based turn completion detection to suppress bot responses when
the user was cut off mid-thought. The LLM outputs one of three markers:
- ✓ (complete): User finished their thought, respond normally
- ○ (incomplete short): User was cut off, wait ~5s then prompt
- ◐ (incomplete long): User needs time to think, wait ~10s then prompt
When incomplete is detected, the bot's response is suppressed. After the timeout
expires, the LLM is automatically prompted to re-engage the user.
"""
import os
from dotenv import load_dotenv
from loguru import logger
from pipecat.adapters.schemas.tools_schema import ToolsSchema
from pipecat.audio.vad.silero import SileroVADAnalyzer
from pipecat.frames.frames import LLMRunFrame
from pipecat.pipeline.pipeline import Pipeline
from pipecat.pipeline.runner import PipelineRunner
from pipecat.pipeline.task import PipelineParams, PipelineTask
from pipecat.processors.aggregators.llm_context import LLMContext
from pipecat.processors.aggregators.llm_response_universal import (
AssistantTurnStoppedMessage,
LLMContextAggregatorPair,
LLMUserAggregatorParams,
UserTurnStoppedMessage,
)
from pipecat.runner.types import RunnerArguments
from pipecat.runner.utils import create_transport
from pipecat.services.cartesia.tts import CartesiaTTSService
from pipecat.services.deepgram.stt import DeepgramSTTService
from pipecat.services.llm_service import FunctionCallParams
from pipecat.services.openai.llm import OpenAILLMService
from pipecat.transports.base_transport import BaseTransport, TransportParams
from pipecat.transports.daily.transport import DailyParams
from pipecat.transports.websocket.fastapi import FastAPIWebsocketParams
from pipecat.turns.user_turn_strategies import FilterIncompleteUserTurnStrategies
load_dotenv(override=True)
# We use lambdas to defer transport parameter creation until the transport
# type is selected at runtime.
transport_params = {
"daily": lambda: DailyParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
"twilio": lambda: FastAPIWebsocketParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
"webrtc": lambda: TransportParams(
audio_in_enabled=True,
audio_out_enabled=True,
),
}
async def get_weather(params: FunctionCallParams, location: str):
"""Return the current weather for a location.
A stub that always reports the same conditions — replace with a real
weather API in production.
Args:
location (str): The city and state or country, e.g. "Paris, France".
"""
await params.result_callback(
{
"location": location,
"temperature_celsius": 22,
"conditions": "partly cloudy",
}
)
async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
logger.info(f"Starting bot")
stt = DeepgramSTTService(api_key=os.environ["DEEPGRAM_API_KEY"])
llm = OpenAILLMService(
api_key=os.environ["OPENAI_API_KEY"],
settings=OpenAILLMService.Settings(
system_instruction=(
"You are a helpful assistant in a voice conversation. Your "
"responses will be spoken aloud, so avoid emojis, bullet "
"points, or other formatting that can't be spoken. Respond to "
"what the user said in a creative, helpful, and brief way. "
"If the user asks about the weather, call the get_weather "
"tool and speak the result back naturally."
),
),
)
llm.register_direct_function(get_weather)
tts = CartesiaTTSService(
api_key=os.environ["CARTESIA_API_KEY"],
settings=CartesiaTTSService.Settings(
voice="71a7ad14-091c-4e8e-a314-022ece01c121", # British Reading Lady
),
)
context = LLMContext(tools=ToolsSchema(standard_tools=[get_weather]))
# `FilterIncompleteUserTurnStrategies` pairs the default detector
# chain with `LLMTurnCompletionUserTurnStopStrategy`: detectors
# trigger LLM inference but the public `on_user_turn_stopped` event
# fires only when the LLM confirms ✓. The LLM marks each response
# with one of:
# ✓ = complete (respond normally)
# ○ = incomplete short (wait 5s, then prompt)
# ◐ = incomplete long (wait 10s, then prompt)
user_aggregator, assistant_aggregator = LLMContextAggregatorPair(
context,
user_params=LLMUserAggregatorParams(
vad_analyzer=SileroVADAnalyzer(),
user_turn_strategies=FilterIncompleteUserTurnStrategies(
# Optional: customize turn completion behavior
# config=UserTurnCompletionConfig(
# incomplete_short_timeout=5.0,
# incomplete_long_timeout=10.0,
# incomplete_short_prompt="Custom prompt...",
# incomplete_long_prompt="Custom prompt...",
# instructions="Custom turn completion instructions...",
# ),
),
),
)
pipeline = Pipeline(
[
transport.input(), # Transport user input
stt,
user_aggregator, # User responses
llm, # LLM
tts, # TTS
transport.output(), # Transport bot output
assistant_aggregator, # Assistant spoken responses
]
)
task = PipelineTask(
pipeline,
params=PipelineParams(
enable_metrics=True,
enable_usage_metrics=True,
),
idle_timeout_secs=runner_args.pipeline_idle_timeout_secs,
)
@transport.event_handler("on_client_connected")
async def on_client_connected(transport, client):
logger.info(f"Client connected")
# Kick off the conversation.
context.add_message(
{"role": "developer", "content": "Please introduce yourself to the user."}
)
await task.queue_frames([LLMRunFrame()])
@transport.event_handler("on_client_disconnected")
async def on_client_disconnected(transport, client):
logger.info(f"Client disconnected")
await task.cancel()
@user_aggregator.event_handler("on_user_turn_stopped")
async def on_user_turn_stopped(aggregator, strategy, message: UserTurnStoppedMessage):
timestamp = f"[{message.timestamp}] " if message.timestamp else ""
line = f"{timestamp}user: {message.content}"
logger.info(f"Transcript: {line}")
@assistant_aggregator.event_handler("on_assistant_turn_stopped")
async def on_assistant_turn_stopped(aggregator, message: AssistantTurnStoppedMessage):
timestamp = f"[{message.timestamp}] " if message.timestamp else ""
line = f"{timestamp}assistant: {message.content}"
logger.info(f"Transcript: {line}")
runner = PipelineRunner(handle_sigint=runner_args.handle_sigint)
await runner.run(task)
async def bot(runner_args: RunnerArguments):
"""Main bot entry point compatible with Pipecat Cloud."""
transport = await create_transport(runner_args, transport_params)
await run_bot(transport, runner_args)
if __name__ == "__main__":
from pipecat.runner.run import main
main()

View File

@@ -50,7 +50,10 @@ transport_params = {
async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
logger.info(f"Starting bot")
stt = GradiumSTTService(api_key=os.environ["GRADIUM_API_KEY"])
stt = GradiumSTTService(
api_key=os.environ["GRADIUM_API_KEY"],
api_endpoint_base_url="wss://us.api.gradium.ai/api/speech/asr",
)
tts = CartesiaTTSService(
api_key=os.environ["CARTESIA_API_KEY"],

View File

@@ -22,9 +22,9 @@ from pipecat.processors.aggregators.llm_response_universal import (
)
from pipecat.runner.types import RunnerArguments
from pipecat.runner.utils import create_transport
from pipecat.services.cartesia.tts import CartesiaTTSService
from pipecat.services.openai.llm import OpenAILLMService
from pipecat.services.soniox.stt import SonioxSTTService
from pipecat.services.soniox.tts import SonioxTTSService
from pipecat.transcriptions.language import Language
from pipecat.transports.base_transport import BaseTransport, TransportParams
from pipecat.transports.daily.transport import DailyParams
@@ -53,7 +53,12 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
stt = SonioxSTTService(api_key=os.environ["SONIOX_API_KEY"])
tts = SonioxTTSService(api_key=os.environ["SONIOX_API_KEY"])
tts = CartesiaTTSService(
api_key=os.environ["CARTESIA_API_KEY"],
settings=CartesiaTTSService.Settings(
voice="71a7ad14-091c-4e8e-a314-022ece01c121", # British Reading Lady
),
)
llm = OpenAILLMService(
api_key=os.environ["OPENAI_API_KEY"],
@@ -98,9 +103,9 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
await task.queue_frames([LLMRunFrame()])
await asyncio.sleep(10)
logger.info("Updating Soniox STT settings: language_hints=[es]")
logger.info("Updating Soniox STT settings: language=es")
await task.queue_frame(
STTUpdateSettingsFrame(delta=SonioxSTTService.Settings(language_hints=[Language.ES]))
STTUpdateSettingsFrame(delta=SonioxSTTService.Settings(language=Language.ES))
)
@transport.event_handler("on_client_disconnected")

View File

@@ -55,6 +55,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
tts = GradiumTTSService(
api_key=os.environ["GRADIUM_API_KEY"],
settings=GradiumTTSService.Settings(voice="YTpq7expH9539ERJ"),
url="wss://us.api.gradium.ai/api/speech/tts",
)
llm = OpenAILLMService(

View File

@@ -54,6 +54,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
stt = GradiumSTTService(
api_key=os.environ["GRADIUM_API_KEY"],
api_endpoint_base_url="wss://us.api.gradium.ai/api/speech/asr",
settings=GradiumSTTService.Settings(
language=Language.EN,
),
@@ -61,6 +62,7 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
tts = GradiumTTSService(
api_key=os.environ["GRADIUM_API_KEY"],
url="wss://us.api.gradium.ai/api/speech/tts",
settings=GradiumTTSService.Settings(
voice="YTpq7expH9539ERJ",
),

View File

@@ -58,7 +58,6 @@ async def run_bot(transport: BaseTransport, runner_args: RunnerArguments):
# Add strict mode to enforce the language hints
language_hints=[Language.EN],
language_hints_strict=True,
enable_language_identification=True,
),
)

View File

@@ -77,7 +77,6 @@ groq = [ "groq>=0.23.0,<2" ]
gstreamer = [ "pygobject~=3.50.0" ]
heygen = [ "livekit>=1.0.13,<2", "pipecat-ai[websockets-base]" ]
hume = [ "hume>=0.11.2,<1" ]
inception = []
inworld = [ "pipecat-ai[websockets-base]" ]
koala = [ "pvkoala~=2.0.3" ]
kokoro = [ "kokoro-onnx>=0.5.0,<1", "requests>=2.32.5,<3" ]
@@ -104,7 +103,7 @@ piper = [ "piper-tts>=1.3.0,<2", "requests>=2.32.5,<3" ]
qwen = []
resembleai = [ "pipecat-ai[websockets-base]" ]
rime = [ "pipecat-ai[websockets-base]" ]
runner = [ "python-dotenv>=1.0.0,<2.0.0", "uvicorn>=0.32.0,<1.0.0", "fastapi>=0.115.6,<1", "pipecat-ai-prebuilt>=1.0.1"]
runner = [ "python-dotenv>=1.0.0,<2.0.0", "uvicorn>=0.32.0,<1.0.0", "fastapi>=0.115.6,<1", "pipecat-ai-small-webrtc-prebuilt>=2.5.0"]
sagemaker = ["aws_sdk_sagemaker_runtime_http2; python_version>='3.12'"]
sambanova = []
sarvam = [ "sarvamai==0.1.28", "pipecat-ai[websockets-base]" ]
@@ -120,7 +119,6 @@ tavus = [ "pipecat-ai[daily]" ]
together = []
tracing = [ "opentelemetry-sdk>=1.33.0,<2", "opentelemetry-api>=1.33.0,<2", "opentelemetry-instrumentation>=0.54b0,<1" ]
ultravox = [ "pipecat-ai[websockets-base]" ]
vonage-video-connector = [ "vonage-video-connector~=0.2.3b0; python_full_version>='3.13' and python_full_version<'3.14' and platform_system=='Linux'" ]
webrtc = [ "aiortc>=1.14.0,<2", "opencv-python>=4.11.0.86,<5" ]
websocket = [ "pipecat-ai[websockets-base]", "fastapi>=0.115.6,<1" ]
websockets-base = [ "websockets>=13.1,<16.0" ]

View File

@@ -198,7 +198,6 @@ TESTS_FUNCTION_CALLING = [
("function-calling/function-calling-sarvam.py", EVAL_WEATHER),
("function-calling/function-calling-novita.py", EVAL_WEATHER),
("function-calling/function-calling-deepseek.py", EVAL_WEATHER),
("function-calling/function-calling-inception.py", EVAL_WEATHER),
# Video
("function-calling/function-calling-anthropic-video.py", EVAL_VISION_CAMERA),
("function-calling/function-calling-aws-video.py", EVAL_VISION_CAMERA),
@@ -243,7 +242,6 @@ TESTS_VIDEO_AVATAR = [
TESTS_TURN_MANAGEMENT = [
("turn-management/turn-management-filter-incomplete-turns.py", EVAL_COMPLETE_TURN),
("turn-management/turn-management-filter-incomplete-turns-function-calling.py", EVAL_WEATHER),
]
TESTS_THINKING = [

View File

@@ -383,14 +383,10 @@ class AggregatedTextFrame(TextFrame):
Parameters:
aggregated_by: Method used to aggregate the text frames.
context_id: Unique identifier for the TTS context that generated this text.
raw_text: The full matched text including start/end pattern delimiters, set when
this frame was produced from a PatternMatch (e.g. a ``<code>...</code>`` block).
None for ordinary sentence aggregations.
"""
aggregated_by: AggregationType | str
context_id: str | None = None
raw_text: str | None = None
@dataclass

View File

@@ -25,7 +25,6 @@ from pipecat.adapters.schemas.tools_schema import ToolsSchema
from pipecat.audio.vad.vad_analyzer import VADAnalyzer
from pipecat.audio.vad.vad_controller import VADController
from pipecat.frames.frames import (
AggregatedTextFrame,
AssistantImageRawFrame,
BotStartedSpeakingFrame,
BotStoppedSpeakingFrame,
@@ -56,6 +55,7 @@ from pipecat.frames.frames import (
LLMThoughtStartFrame,
LLMThoughtTextFrame,
StartFrame,
STTMetadataFrame,
TextFrame,
TranscriptionFrame,
TranslationFrame,
@@ -81,6 +81,7 @@ from pipecat.processors.aggregators.llm_context_summarizer import (
SummaryAppliedEvent,
)
from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
from pipecat.services.stt_latency import DEFAULT_TTFS_P99
from pipecat.turns.user_idle_controller import UserIdleController
from pipecat.turns.user_mute import BaseUserMuteStrategy
from pipecat.turns.user_start import BaseUserTurnStartStrategy, UserTurnStartedParams
@@ -128,6 +129,25 @@ class LLMUserAggregatorParams:
has been idle (not speaking) for this duration. Set to 0 to disable
idle detection.
vad_analyzer: Voice Activity Detection analyzer instance.
wait_for_transcript_to_end_user_turn: Defaults to True. Set to
False for pipelines where local turn detection drives a
realtime service like Gemini Live. The realtime service
consumes user audio directly, so we don't need user
transcripts in context before it can respond, and waiting
for them is pure latency. When False:
- Turn strategies do not consider user transcripts, so the
user turn ends sooner. ``on_user_turn_stopped`` fires at
the end of turn with empty content. To achieve this,
the aggregator drops ``TranscriptionUserTurnStartStrategy``
from start strategies and flips
``wait_for_transcript=False`` on any stop strategy that
supports it.
- User transcripts are handled by the aggregator: a simple
post-turn transcript wait gives it time to receive them
after the user turn ends, then the aggregator emits a
new ``on_user_turn_message_finalized`` event with the
new user context message.
filter_incomplete_user_turns: [DEPRECATED] Use
``user_turn_strategies=FilterIncompleteUserTurnStrategies()``
instead. When enabled, the LLM outputs a turn-completion
@@ -158,6 +178,7 @@ class LLMUserAggregatorParams:
user_turn_stop_timeout: float = 5.0
user_idle_timeout: float = 0
vad_analyzer: VADAnalyzer | None = None
wait_for_transcript_to_end_user_turn: bool = True
filter_incomplete_user_turns: bool = False
user_turn_completion_config: UserTurnCompletionConfig | None = None
@@ -260,13 +281,43 @@ class LLMAssistantAggregatorParams:
@dataclass
class UserTurnStoppedMessage:
"""A user turn stopped message containing a user transcript update.
"""A message accompanying ``on_user_turn_stopped`` (end of user turn).
A message in a conversation transcript containing the user content. This is
the aggregated transcript that is then used in the context.
With ``wait_for_transcript_to_end_user_turn=True`` (the default),
the user message is finalized at the end of the turn, so
``content`` carries the aggregated transcript. With it set to
False, the aggregator is still in its post-turn transcript wait
at this point, so ``content`` is ``None`` — subscribe to
``on_user_turn_message_finalized`` for the assembled message.
Parameters:
content: The message content/text.
content: The aggregated user transcript, or ``None`` when
``wait_for_transcript_to_end_user_turn=False`` (the
aggregator is still in its post-turn transcript wait at
this point).
timestamp: When the user turn started.
user_id: Optional identifier for the user.
"""
content: str | None
timestamp: str
user_id: str | None = None
@dataclass
class UserMessageFinalizedMessage:
"""A message accompanying ``on_user_turn_message_finalized``.
Fired when the user message has been finalized into the context.
With ``wait_for_transcript_to_end_user_turn=True`` (the default)
this coincides with ``on_user_turn_stopped``. With it set to
False, the aggregator first runs a post-turn transcript wait, so
this event fires later than ``on_user_turn_stopped``.
``content`` is always populated.
Parameters:
content: The aggregated user transcript.
timestamp: When the user turn started.
user_id: Optional identifier for the user.
@@ -527,8 +578,21 @@ class LLMUserAggregator(LLMContextAggregator):
Event handlers available:
- on_user_turn_started: Called when the user turn starts
- on_user_turn_stopped: Called when the user turn ends
- on_user_turn_started: Called when the user turn starts.
- on_user_turn_stopped: Called at the end of turn, with a
``UserTurnStoppedMessage``. With
``wait_for_transcript_to_end_user_turn=True`` (the default),
``message.content`` carries the aggregated transcript. With it
set to False, the aggregator is still in its post-turn transcript
wait at this point, so ``message.content`` is ``None``; subscribe
to ``on_user_turn_message_finalized`` for the assembled message.
- on_user_turn_message_finalized: Called when the user message
has been finalized into the context, with a
``UserMessageFinalizedMessage``. With
``wait_for_transcript_to_end_user_turn=True`` this coincides
with ``on_user_turn_stopped``; with it set to False it fires
later, after the aggregator's post-turn transcript wait window
completes. ``message.content`` is always populated.
- on_user_turn_stop_timeout: Called when no user turn stop strategy triggers
- on_user_turn_idle: Called when the user has been idle for the configured timeout
- on_user_mute_started: Called when the user becomes muted
@@ -544,6 +608,10 @@ class LLMUserAggregator(LLMContextAggregator):
async def on_user_turn_stopped(aggregator, strategy: BaseUserTurnStopStrategy, message: UserTurnStoppedMessage):
...
@aggregator.event_handler("on_user_turn_message_finalized")
async def on_user_turn_message_finalized(aggregator, strategy: BaseUserTurnStopStrategy, message: UserMessageFinalizedMessage):
...
@aggregator.event_handler("on_user_turn_stop_timeout")
async def on_user_turn_stop_timeout(aggregator):
...
@@ -587,12 +655,14 @@ class LLMUserAggregator(LLMContextAggregator):
self._register_event_handler("on_user_turn_started")
self._register_event_handler("on_user_turn_stopped")
self._register_event_handler("on_user_turn_message_finalized")
self._register_event_handler("on_user_turn_stop_timeout")
self._register_event_handler("on_user_turn_idle")
self._register_event_handler("on_user_turn_inference_triggered")
self._register_event_handler("on_user_mute_started")
self._register_event_handler("on_user_mute_stopped")
user_provided_strategies = self._params.user_turn_strategies is not None
user_turn_strategies = self._params.user_turn_strategies or UserTurnStrategies()
# Deprecated path: translate filter_incomplete_user_turns into
@@ -606,6 +676,17 @@ class LLMUserAggregator(LLMContextAggregator):
)
self._params.user_turn_strategies = user_turn_strategies
# When `wait_for_transcript_to_end_user_turn=False`, mutate the
# user turn strategies so they don't consider user transcripts:
# drop the transcription start strategy, flip
# `wait_for_transcript=False` on stop strategies that support
# it. Loud log if the user passed their own strategies (we're
# overwriting parts of their config); quiet log otherwise.
if not self._params.wait_for_transcript_to_end_user_turn:
self._apply_no_transcript_wait_bundle(
user_turn_strategies, user_provided_strategies=user_provided_strategies
)
self._user_is_muted = False
self._user_turn_start_timestamp = ""
# Full transcript across the user turn. Each
@@ -617,6 +698,20 @@ class LLMUserAggregator(LLMContextAggregator):
# inferences fire before finalization.
self._full_user_turn_aggregation: str | None = None
# Post-turn transcript wait state, used when the aggregator
# waits for transcripts after the user turn ends
# (`_wait_for_post_turn_transcripts == True`):
# `on_user_turn_stopped` has fired with empty content, and the
# aggregator is waiting on `_post_turn_transcript_wait_task`
# before finalizing the user message into context. The wait
# window duration is taken from the last `STTMetadataFrame`
# seen (`STTMetadataFrame.ttfs_p99_latency`), falling back to
# `DEFAULT_TTFS_P99` if no STT service has reported one.
self._post_turn_transcript_wait_strategy: BaseUserTurnStopStrategy | None = None
self._inference_during_post_turn_transcript_wait: bool = False
self._post_turn_transcript_wait_task: asyncio.Task | None = None
self._stt_ttfs_p99_latency: float | None = None
self._user_turn_controller = UserTurnController(
user_turn_strategies=user_turn_strategies,
user_turn_stop_timeout=self._params.user_turn_stop_timeout,
@@ -659,6 +754,81 @@ class LLMUserAggregator(LLMContextAggregator):
self._vad_controller.add_event_handler("on_push_frame", self._on_push_frame)
self._vad_controller.add_event_handler("on_broadcast_frame", self._on_broadcast_frame)
@property
def _wait_for_post_turn_transcripts(self) -> bool:
"""True when the aggregator runs a post-turn transcript wait.
Inverse of the public ``wait_for_transcript_to_end_user_turn``
param: when that's False, this is True. In this mode, turn
strategies don't consider user transcripts (so the user turn
ends sooner), and the aggregator runs a simple timer after the
end of turn to receive any transcripts that arrive, then emits
``on_user_turn_message_finalized`` with the assembled user
context message. Always travels with the strategy-mutation
bundle applied at init.
"""
return not self._params.wait_for_transcript_to_end_user_turn
def _apply_no_transcript_wait_bundle(
self,
user_turn_strategies: UserTurnStrategies,
*,
user_provided_strategies: bool,
):
"""Adjust strategies to match ``wait_for_transcript_to_end_user_turn=False``.
Mutates the user turn strategies so they don't consider user
transcripts: drops ``TranscriptionUserTurnStartStrategy`` from
start strategies (so late-arriving transcripts don't start
new turns), and sets ``wait_for_transcript=False`` on any
stop strategy that supports it. The net effect: the user turn
ends sooner.
Logs loudly when adjusting user-provided strategies — we're
mutating objects the caller passed in. Logs quietly when only
synthesized defaults are in play.
"""
# Local import to avoid a top-level cycle with `turns.user_start`.
from pipecat.turns.user_start import TranscriptionUserTurnStartStrategy
adjustments: list[str] = []
if user_turn_strategies.start:
filtered = [
s
for s in user_turn_strategies.start
if not isinstance(s, TranscriptionUserTurnStartStrategy)
]
dropped = len(user_turn_strategies.start) - len(filtered)
if dropped:
user_turn_strategies.start = filtered
adjustments.append(
f"dropped {dropped} TranscriptionUserTurnStartStrategy from start strategies"
)
flipped = 0
for s in user_turn_strategies.stop or []:
if hasattr(s, "_wait_for_transcript") and s._wait_for_transcript:
s._wait_for_transcript = False
flipped += 1
if flipped:
adjustments.append(
f"set wait_for_transcript=False on {flipped} stop "
f"strateg{'y' if flipped == 1 else 'ies'}"
)
if not adjustments:
return
message = (
f"{self}: wait_for_transcript_to_end_user_turn=False adjusted "
f"user turn strategies: {'; '.join(adjustments)}."
)
if user_provided_strategies:
logger.warning(message)
else:
logger.info(message)
async def cleanup(self):
"""Clean up processor resources."""
await super().cleanup()
@@ -698,6 +868,13 @@ class LLMUserAggregator(LLMContextAggregator):
# Interim transcriptions and translations are consumed here
# and not pushed downstream, same as final TranscriptionFrame.
pass
elif isinstance(frame, STTMetadataFrame):
# Record the STT service's reported P99 TTFS so the
# post-turn transcript wait timer can size itself to the real
# latency. Frame is also pushed downstream so other
# processors keep seeing it.
self._stt_ttfs_p99_latency = frame.ttfs_p99_latency
await self.push_frame(frame, direction)
elif isinstance(frame, LLMRunFrame):
await self._handle_llm_run(frame)
elif isinstance(frame, LLMMessagesAppendFrame):
@@ -748,13 +925,31 @@ class LLMUserAggregator(LLMContextAggregator):
await s.setup(self.task_manager)
async def _stop(self, frame: EndFrame):
await self._maybe_emit_user_turn_stopped(on_session_end=True)
await self._finalize_on_session_end()
await self._cleanup()
async def _cancel(self, frame: CancelFrame):
await self._maybe_emit_user_turn_stopped(on_session_end=True)
await self._finalize_on_session_end()
await self._cleanup()
async def _finalize_on_session_end(self):
"""Flush any pending user message on session end.
If a post-turn transcript wait is in flight, complete it now so
the user message is captured before the session shuts down.
Otherwise, run the mode-appropriate finalize path on whatever
is currently in the buffer.
"""
if (
self._post_turn_transcript_wait_strategy is not None
or self._inference_during_post_turn_transcript_wait
):
await self._complete_post_turn_transcript_wait(on_session_end=True)
elif self._wait_for_post_turn_transcripts:
await self._finalize_user_message(on_session_end=True)
else:
await self._finalize_user_turn(on_session_end=True)
async def _cleanup(self):
if self._vad_controller:
await self._vad_controller.cleanup()
@@ -885,6 +1080,21 @@ class LLMUserAggregator(LLMContextAggregator):
):
logger.debug(f"{self}: User started speaking (strategy: {strategy})")
# Precondition guard: if the previous turn's post-turn
# transcript wait is still active when the next turn starts,
# the assumption that transcripts arrive before the next turn
# has been violated. Complete the previous turn's wait now so
# its user message is finalized before this turn proceeds.
if (
self._post_turn_transcript_wait_strategy is not None
or self._inference_during_post_turn_transcript_wait
):
logger.warning(
f"{self}: user turn started before previous turn's transcripts "
f"arrived; flushing previous turn now"
)
await self._complete_post_turn_transcript_wait()
self._user_turn_start_timestamp = time_now_iso8601()
self._full_user_turn_aggregation = None
@@ -905,6 +1115,14 @@ class LLMUserAggregator(LLMContextAggregator):
):
logger.debug(f"{self}: User turn inference triggered (strategy: {strategy})")
if self._wait_for_post_turn_transcripts:
# The aggregator is in its post-turn transcript wait.
# Defer push_aggregation and event emission; they'll run
# alongside user message finalization when the wait window
# completes.
self._inference_during_post_turn_transcript_wait = True
return
# Push aggregation now: this writes the user message segment to
# the context and emits LLMContextFrame, which kicks LLM
# inference. Concatenate the segment into
@@ -930,42 +1148,144 @@ class LLMUserAggregator(LLMContextAggregator):
):
logger.debug(f"{self}: User stopped speaking (strategy: {strategy})")
# End-of-turn side effects always fire on the strategy event,
# regardless of whether user message finalization is deferred
# to a post-turn transcript wait window.
if params.enable_user_speaking_frames:
await self.broadcast_frame(UserStoppedSpeakingFrame)
await self._user_idle_controller.process_frame(UserStoppedSpeakingFrame())
await self._maybe_emit_user_turn_stopped(strategy)
if self._wait_for_post_turn_transcripts:
# Fire `on_user_turn_stopped` now for the end of turn —
# content is `None` because no transcripts have arrived
# yet. Start the post-turn transcript wait timer; when it
# completes, the aggregator finalizes the user message and
# emits `on_user_turn_message_finalized`. Consumers wanting
# the assembled message subscribe to
# `on_user_turn_message_finalized`.
end_of_turn_message = UserTurnStoppedMessage(
content=None, timestamp=self._user_turn_start_timestamp
)
await self._call_event_handler("on_user_turn_stopped", strategy, end_of_turn_message)
self._post_turn_transcript_wait_strategy = strategy
wait_timeout = (
self._stt_ttfs_p99_latency
if self._stt_ttfs_p99_latency is not None
else DEFAULT_TTFS_P99
)
self._post_turn_transcript_wait_task = self.create_task(
self._post_turn_transcript_wait_handler(wait_timeout),
f"{self}::post_turn_transcript_wait",
)
return
await self._finalize_user_turn(strategy)
async def _post_turn_transcript_wait_handler(self, timeout: float):
"""Post-turn transcript wait timer.
Waits ``timeout`` seconds — giving transcripts time to arrive
after the end of turn — then completes the wait and finalizes
the user message into context, with whatever transcripts the
aggregator has received by then (possibly none).
The simple-timer approach relies on the assumptions that
transcripts don't arrive too late and that the assistant
response won't finish before this timer.
Cancelled by reset, the next-turn precondition guard, or
session end.
"""
try:
await asyncio.sleep(timeout)
except asyncio.CancelledError:
return
finally:
self._post_turn_transcript_wait_task = None
await self._complete_post_turn_transcript_wait()
async def _complete_post_turn_transcript_wait(self, *, on_session_end: bool = False):
"""Complete the active post-turn transcript wait window.
``on_user_turn_stopped`` already fired at the end of turn (with
empty content) and the aggregator has been receiving
transcripts since. This finalizes that work: flushes any
inference-triggered segment whose push was deferred during the
wait, then emits ``on_user_turn_message_finalized`` with the
assembled user context message. Called from the post-turn
transcript wait timer (the normal path), the precondition guard
in ``_on_user_turn_started``, and the session-end paths.
"""
if self._post_turn_transcript_wait_task:
await self.cancel_task(self._post_turn_transcript_wait_task)
self._post_turn_transcript_wait_task = None
wait_strategy = self._post_turn_transcript_wait_strategy
had_pending_inference = self._inference_during_post_turn_transcript_wait
self._post_turn_transcript_wait_strategy = None
self._inference_during_post_turn_transcript_wait = False
if had_pending_inference:
segment = await self.push_aggregation()
if segment:
if self._full_user_turn_aggregation:
self._full_user_turn_aggregation = (
f"{self._full_user_turn_aggregation} {segment}".strip()
)
else:
self._full_user_turn_aggregation = segment
await self._call_event_handler("on_user_turn_inference_triggered", wait_strategy)
if wait_strategy is not None or on_session_end:
# `on_user_turn_stopped` already fired at the end of turn;
# this is the deferred user message finalization.
await self._finalize_user_message(wait_strategy, on_session_end=on_session_end)
async def _on_reset_aggregation(
self, controller: UserTurnController, strategy: BaseUserTurnStartStrategy
):
logger.debug(f"{self}: Resetting aggregation (strategy: {strategy})")
await self._cancel_post_turn_transcript_wait()
await self.reset()
async def _cancel_post_turn_transcript_wait(self):
"""Cancel any active post-turn transcript wait window without finalizing.
Called from reset paths (interruption, explicit reset).
"Reset" means "throw it away" — we don't flush a partial
transcript that was about to be invalidated anyway.
"""
if self._post_turn_transcript_wait_task:
await self.cancel_task(self._post_turn_transcript_wait_task)
self._post_turn_transcript_wait_task = None
self._post_turn_transcript_wait_strategy = None
self._inference_during_post_turn_transcript_wait = False
async def _on_user_turn_stop_timeout(self, controller):
await self._call_event_handler("on_user_turn_stop_timeout")
async def _on_user_turn_idle(self, controller):
await self._call_event_handler("on_user_turn_idle")
async def _maybe_emit_user_turn_stopped(
self,
strategy: BaseUserTurnStopStrategy | None = None,
on_session_end: bool = False,
):
"""Maybe emit user turn stopped event.
async def _flush_user_message_to_context(
self, on_session_end: bool = False
) -> tuple[str, str] | None:
"""Push the aggregated user message to context, return ``(content, timestamp)``.
Earlier inference triggers in the same turn have already pushed
their segments to the context and accumulated them into
``self._full_user_turn_aggregation``. Any aggregation that
arrived after the last inference trigger is flushed here so
end-of-turn content is never lost from the public event.
Earlier inference triggers in the same turn already pushed their
segments to the context and accumulated them in
``self._full_user_turn_aggregation``; whatever arrived after the
last inference trigger is flushed here so end-of-turn content is
never lost.
Args:
strategy: The strategy that triggered the turn stop.
on_session_end: If True, only emit if there's unemitted content
(avoids duplicate events when session ends).
Returns ``(content, timestamp)`` for the just-finalized user
message, or ``None`` when there's no content to flush and
``on_session_end=True`` (avoids emitting empty events during
session shutdown). Callers construct the appropriate message
dataclass for each event they emit.
"""
segment = await self.push_aggregation()
full_aggregation = self._full_user_turn_aggregation
@@ -976,12 +1296,53 @@ class LLMUserAggregator(LLMContextAggregator):
else:
content = full_aggregation or segment
if not on_session_end or content:
message = UserTurnStoppedMessage(
content=content, timestamp=self._user_turn_start_timestamp
)
await self._call_event_handler("on_user_turn_stopped", strategy, message)
self._user_turn_start_timestamp = ""
if on_session_end and not content:
return None
timestamp = self._user_turn_start_timestamp
self._user_turn_start_timestamp = ""
return content, timestamp
async def _finalize_user_turn(
self,
strategy: BaseUserTurnStopStrategy | None = None,
on_session_end: bool = False,
):
"""Finalize the user turn: flush the message, emit both events.
Used in the default mode (``_wait_for_post_turn_transcripts ==
False``), where end of turn and user message finalization
coincide. Emits both ``on_user_turn_stopped`` and
``on_user_turn_message_finalized``.
"""
result = await self._flush_user_message_to_context(on_session_end=on_session_end)
if result is None:
return
content, timestamp = result
stopped_msg = UserTurnStoppedMessage(content=content, timestamp=timestamp)
finalized_msg = UserMessageFinalizedMessage(content=content, timestamp=timestamp)
await self._call_event_handler("on_user_turn_stopped", strategy, stopped_msg)
await self._call_event_handler("on_user_turn_message_finalized", strategy, finalized_msg)
async def _finalize_user_message(
self,
strategy: BaseUserTurnStopStrategy | None = None,
on_session_end: bool = False,
):
"""Finalize the user message: flush to context, emit one event.
Used when the aggregator runs a post-turn transcript wait
(``_wait_for_post_turn_transcripts == True``), where user
message finalization fires after the end of turn. Emits
``on_user_turn_message_finalized`` only; ``on_user_turn_stopped``
was already emitted at the end of turn.
"""
result = await self._flush_user_message_to_context(on_session_end=on_session_end)
if result is None:
return
content, timestamp = result
finalized_msg = UserMessageFinalizedMessage(content=content, timestamp=timestamp)
await self._call_event_handler("on_user_turn_message_finalized", strategy, finalized_msg)
class LLMAssistantAggregator(LLMContextAggregator):
@@ -1497,14 +1858,9 @@ class LLMAssistantAggregator(LLMContextAggregator):
if len(frame.text) == 0:
return
text = (
frame.raw_text
if isinstance(frame, AggregatedTextFrame) and frame.raw_text
else frame.text
)
self._aggregation.append(
TextPartForConcatenation(
text, includes_inter_part_spaces=frame.includes_inter_frame_spaces
frame.text, includes_inter_part_spaces=frame.includes_inter_frame_spaces
)
)

View File

@@ -23,7 +23,6 @@ from pipecat.frames.frames import (
)
from pipecat.processors.frame_processor import FrameDirection, FrameProcessor
from pipecat.utils.text.base_text_aggregator import BaseTextAggregator
from pipecat.utils.text.pattern_pair_aggregator import PatternMatch
from pipecat.utils.text.simple_text_aggregator import SimpleTextAggregator
@@ -86,11 +85,7 @@ class LLMTextProcessor(FrameProcessor):
out_frame = AggregatedTextFrame(
text=aggregation.text,
aggregated_by=aggregation.type,
raw_text=aggregation.full_match
if isinstance(aggregation, PatternMatch)
else aggregation.text,
)
out_frame.append_to_context = True
out_frame.skip_tts = in_frame.skip_tts
await self.push_frame(out_frame)
@@ -101,9 +96,6 @@ class LLMTextProcessor(FrameProcessor):
out_frame = AggregatedTextFrame(
text=remaining.text,
aggregated_by=remaining.type,
raw_text=remaining.full_match
if isinstance(remaining, PatternMatch)
else remaining.text,
)
out_frame.skip_tts = skip_tts
await self.push_frame(out_frame)

View File

@@ -528,9 +528,6 @@ class RTVIObserver(BaseObserver):
text = await transform(text, agg_type)
isTTS = isinstance(frame, TTSTextFrame)
if agg_type is not AggregationType.WORD:
logger.trace(f"{self} Aggregated LLM text: {text}, {agg_type} spoken:{isTTS}")
if self._params.bot_output_enabled:
message = RTVI.BotOutputMessage(
data=RTVI.BotOutputMessageData(text=text, spoken=isTTS, aggregated_by=agg_type)

View File

@@ -19,10 +19,6 @@ All bots must implement a `bot(runner_args)` async function as the entry point.
The server automatically discovers and executes this function when connections
are established.
By default the runner starts a single FastAPI server that supports WebRTC, Daily,
and telephony transports simultaneously. Clients declare which transport they want
via the ``transport`` field in the ``/start`` request body (default: ``"webrtc"``).
Single transport example::
async def bot(runner_args: RunnerArguments):
@@ -59,38 +55,18 @@ Supported transports:
- WebRTC - Provides local WebRTC interface with prebuilt UI
- Telephony - Handles webhook and WebSocket connections for Twilio, Telnyx, Plivo, Exotel
The ``/start`` endpoint accepts::
{
"transport": "webrtc", // "webrtc" | "daily" | "twilio" | "telnyx" |
// "plivo" | "exotel" — default: "webrtc"
// WebRTC-specific
"enableDefaultIceServers": false,
"body": {...},
// Daily-specific
"createDailyRoom": true,
"dailyRoomProperties": {...},
"dailyMeetingTokenProperties": {...},
"body": {...}
}
To run locally:
- All transports (default): ``python bot.py``
- WebRTC only: ``python bot.py -t webrtc``
- ESP32: ``python bot.py -t webrtc --esp32 --host 192.168.1.100``
- Daily only: ``python bot.py -t daily``
- Daily (direct, testing only): ``python bot.py -d``
- Telephony: ``python bot.py -t twilio -x your_username.ngrok.io``
- Exotel: ``python bot.py -t exotel`` (no proxy needed, but ngrok connection to HTTP 7860 is required)
- WhatsApp: ``python bot.py --whatsapp``
- WebRTC: `python bot.py -t webrtc`
- ESP32: `python bot.py -t webrtc --esp32 --host 192.168.1.100`
- Daily (server): `python bot.py -t daily`
- Daily (direct, testing only): `python bot.py -d`
- Telephony: `python bot.py -t twilio -x your_username.ngrok.io`
- Exotel: `python bot.py -t exotel` (no proxy needed, but ngrok connection to HTTP 7860 is required)
"""
import argparse
import asyncio
import importlib.util
import mimetypes
import os
import sys
@@ -109,10 +85,8 @@ from pipecat.runner.types import (
DailyRunnerArguments,
RunnerArguments,
SmallWebRTCRunnerArguments,
VonageRunnerArguments,
WebSocketRunnerArguments,
)
from pipecat.runner.vonage import configure as configure_vonage
try:
import uvicorn
@@ -132,18 +106,6 @@ load_dotenv(override=True)
os.environ["ENV"] = "local"
TELEPHONY_TRANSPORTS = ["twilio", "telnyx", "plivo", "exotel"]
TRANSPORT_ROUTE_DEPENDENCIES = {
"daily": ("daily",),
"webrtc": ("aiortc",),
"telephony": ("fastapi", "websockets"),
"websocket": ("fastapi", "websockets"),
}
TRANSPORT_INSTALL_HINTS = {
"daily": "install pipecat-ai[daily]",
"webrtc": "install pipecat-ai[webrtc]",
"telephony": "install pipecat-ai[websocket]",
"websocket": "install pipecat-ai[websocket]",
}
# Mirror Pipecat Cloud's 4-hour max session limit so dev rooms get cleaned up.
PIPECAT_ROOM_EXP_HOURS = 4.0
@@ -169,120 +131,6 @@ Import this to add custom routes from other packages before calling
"""
def _is_module_available(module: str) -> bool:
"""Check whether a module can be imported without importing it.
Args:
module: Fully-qualified module name to check.
Returns:
``True`` if Python can resolve the module, ``False`` otherwise.
"""
try:
return importlib.util.find_spec(module) is not None
except (ImportError, ModuleNotFoundError, ValueError):
return False
def _transport_route_dependencies(transport: str) -> tuple[str, ...]:
"""Return module dependencies required for a transport route.
Args:
transport: Transport name from the runner request or CLI.
Returns:
Module names required to enable the transport route.
"""
if transport in TELEPHONY_TRANSPORTS:
return TRANSPORT_ROUTE_DEPENDENCIES["telephony"]
return TRANSPORT_ROUTE_DEPENDENCIES.get(transport, ())
def _transport_routes_enabled(transport: str) -> bool:
"""Return whether a transport route can run in this environment.
Args:
transport: Transport name from the runner request or CLI.
Returns:
``True`` if the requested transport is enabled.
"""
return all(_is_module_available(module) for module in _transport_route_dependencies(transport))
def _runner_url(args: argparse.Namespace) -> str:
"""Return the browser URL for the runner prebuilt client."""
return f"http://{args.host}:{args.port}"
def _transport_status_lists() -> tuple[list[str], list[str]]:
"""Return enabled and disabled transport labels for the startup banner."""
transports = ["daily", "webrtc", "telephony", "websocket"]
enabled = []
disabled = []
for label in transports:
if _transport_routes_enabled(label):
enabled.append(label)
else:
disabled.append(f"{label} ({TRANSPORT_INSTALL_HINTS[label]})")
return enabled, disabled
def _format_transport_status(labels: list[str]) -> str:
"""Format a startup banner transport status list."""
return ", ".join(labels) if labels else "none"
def _print_startup_message(args: argparse.Namespace):
"""Print connection information for the development runner."""
print()
if args.transport is None:
enabled, disabled = _transport_status_lists()
print("🚀 Bot ready!")
print(f" → Open: {_runner_url(args)}")
print(f" → Enabled transports: {_format_transport_status(enabled)}")
if disabled:
print(f" → Disabled transports: {_format_transport_status(disabled)}")
elif args.transport == "webrtc":
if args.esp32:
print("🚀 Bot ready! (ESP32 mode)")
elif args.whatsapp:
print("🚀 Bot ready! (WhatsApp)")
else:
print("🚀 Bot ready! (WebRTC)")
if _transport_routes_enabled("webrtc"):
print(f" → Open: {_runner_url(args)}")
else:
print(f" → WebRTC disabled ({TRANSPORT_INSTALL_HINTS['webrtc']})")
elif args.transport == "daily":
print("🚀 Bot ready! (Daily)")
if not _transport_routes_enabled("daily"):
print(f" → Daily disabled ({TRANSPORT_INSTALL_HINTS['daily']})")
else:
print(f" → Open: {_runner_url(args)}")
if args.dialin:
print(
f" → Daily dial-in webhook: "
f"http://{args.host}:{args.port}/daily-dialin-webhook"
)
print(" → Configure this URL in your Daily phone number settings")
elif args.transport in TELEPHONY_TRANSPORTS:
print(f"🚀 Bot ready! ({args.transport.capitalize()})")
if not _transport_routes_enabled(args.transport):
print(f" → Telephony disabled ({TRANSPORT_INSTALL_HINTS['telephony']})")
else:
print(f" → Open: {_runner_url(args)}")
if args.proxy:
print(f" → XML webhook: http://{args.host}:{args.port}/")
print(f" → WebSocket: ws://{args.host}:{args.port}/ws")
elif args.transport == "vonage":
print()
print("🚀 Bot ready!")
print()
def _get_bot_module():
"""Get the bot module from the calling script."""
import importlib.util
@@ -338,35 +186,8 @@ async def _run_telephony_bot(websocket: WebSocket, args: argparse.Namespace):
await bot_module.bot(runner_args)
async def _run_websocket_bot(websocket: WebSocket, args: argparse.Namespace):
"""Run a bot for plain WebSocket transport."""
bot_module = _get_bot_module()
runner_args = WebSocketRunnerArguments(
websocket=websocket,
transport_type="websocket",
session_id=str(uuid.uuid4()),
)
runner_args.cli_args = args
await bot_module.bot(runner_args)
def _setup_websocket_routes(app: FastAPI, args: argparse.Namespace):
"""Set up the plain WebSocket route at ``/ws-client``."""
if not _transport_routes_enabled("websocket"):
return
@app.websocket("/ws-client")
async def websocket_client_endpoint(websocket: WebSocket):
"""Handle plain WebSocket connections (non-telephony)."""
await websocket.accept()
logger.debug("Plain WebSocket connection accepted")
await _run_websocket_bot(websocket, args)
def _configure_server_app(args: argparse.Namespace):
"""Configure the module-level FastAPI app with routes for all transports."""
"""Configure the module-level FastAPI app with transport-specific routes."""
app.add_middleware(
CORSMiddleware,
allow_origins=["*"],
@@ -375,207 +196,17 @@ def _configure_server_app(args: argparse.Namespace):
allow_headers=["*"],
)
# Shared session store: session_id -> body data. Used by the WebRTC /start
# flow and the /sessions/{session_id}/... proxy routes.
active_sessions: dict[str, dict[str, Any]] = {}
_setup_frontend_routes(app)
_setup_webrtc_routes(app, args, active_sessions)
_setup_daily_routes(app, args)
_setup_telephony_routes(app, args)
_setup_websocket_routes(app, args)
_setup_unified_start_route(app, args, active_sessions)
if args.whatsapp:
_setup_whatsapp_routes(app, args)
def _setup_unified_start_route(
app: FastAPI, args: argparse.Namespace, active_sessions: dict[str, dict[str, Any]]
):
"""Register the unified POST /start and GET /status endpoints.
Handles WebRTC, Daily, and telephony transport start flows. Clients specify
which transport they want via the ``transport`` field in the request body.
When ``-t`` was passed on the command line, requests for any other transport
are rejected with HTTP 400.
"""
ALL_TRANSPORTS = ["webrtc", "daily", *TELEPHONY_TRANSPORTS, "websocket"]
@app.get("/status")
async def status():
"""Return the transports supported by this runner instance."""
transports = [args.transport] if args.transport is not None else ALL_TRANSPORTS
return {"status": "ready", "transports": transports}
class IceServer(TypedDict, total=False):
urls: str | list[str]
class IceConfig(TypedDict):
iceServers: list[IceServer]
class StartBotResult(TypedDict, total=False):
sessionId: str
iceConfig: IceConfig | None
dailyRoom: str | None
dailyToken: str | None
wsUrl: str | None
token: str | None
@app.post("/start")
async def start_agent(request: Request):
"""Start a bot session.
Accepts::
{
"transport": "webrtc", // "webrtc" | "daily" | "twilio" | "telnyx" |
// "plivo" | "exotel" — default: "webrtc"
// WebRTC-specific
"enableDefaultIceServers": false,
"body": {...},
// Daily-specific
"createDailyRoom": true,
"dailyRoomProperties": {...},
"dailyMeetingTokenProperties": {...},
"body": {...}
}
"""
try:
request_data = await request.json()
logger.debug(f"Received request: {request_data}")
except Exception as e:
logger.error(f"Failed to parse request body: {e}")
request_data = {}
# Determine transport: explicit field → legacy Daily hint → CLI default → webrtc
transport = request_data.get("transport")
if transport is None and request_data.get("createDailyRoom", False):
transport = "daily"
if transport is None:
transport = args.transport or "webrtc"
# Enforce restriction when -t was explicitly set on the command line
if args.transport is not None and transport != args.transport:
raise HTTPException(
status_code=400,
detail=(
f"Transport '{transport}' is not allowed. "
f"Server is configured for '{args.transport}' only (-t {args.transport})."
),
)
if not _transport_routes_enabled(transport):
raise HTTPException(
status_code=400,
detail=(
f"Transport '{transport}' is disabled in this runner environment. "
"Check the startup banner for enabled transports."
),
)
if transport == "webrtc":
# WebRTC: register the session; the bot starts when the WebRTC offer arrives.
session_id = str(uuid.uuid4())
active_sessions[session_id] = request_data.get("body", {})
result = StartBotResult(
sessionId=session_id,
)
if request_data.get("enableDefaultIceServers"):
result["iceConfig"] = IceConfig(
iceServers=[IceServer(urls=["stun:stun.l.google.com:19302"])]
)
return result
elif transport == "daily":
create_daily_room = request_data.get("createDailyRoom", False)
body = request_data.get("body", {})
daily_room_properties_dict = request_data.get("dailyRoomProperties", None)
daily_token_properties_dict = request_data.get("dailyMeetingTokenProperties", None)
bot_module = _get_bot_module()
existing_room_url = os.getenv("DAILY_ROOM_URL")
session_id = str(uuid.uuid4())
result: StartBotResult | None = None
if create_daily_room or existing_room_url:
from pipecat.runner.daily import configure
from pipecat.transports.daily.utils import (
DailyMeetingTokenProperties,
DailyRoomProperties,
)
async with aiohttp.ClientSession() as session:
room_properties = None
if daily_room_properties_dict:
daily_room_properties_dict.setdefault(
"exp", time.time() + PIPECAT_ROOM_EXP_HOURS * 3600
)
daily_room_properties_dict.setdefault("eject_at_room_exp", True)
try:
room_properties = DailyRoomProperties(**daily_room_properties_dict)
logger.debug(f"Using custom room properties: {room_properties}")
except Exception as e:
logger.error(f"Failed to parse dailyRoomProperties: {e}")
token_properties = None
if daily_token_properties_dict:
try:
token_properties = DailyMeetingTokenProperties(
**daily_token_properties_dict
)
logger.debug(f"Using custom token properties: {token_properties}")
except Exception as e:
logger.error(f"Failed to parse dailyMeetingTokenProperties: {e}")
room_url, token = await configure(
session,
room_exp_duration=PIPECAT_ROOM_EXP_HOURS,
room_properties=room_properties,
token_properties=token_properties,
)
runner_args = DailyRunnerArguments(
room_url=room_url, token=token, body=body, session_id=session_id
)
result = StartBotResult(
dailyRoom=room_url,
dailyToken=token,
sessionId=session_id,
)
else:
runner_args = RunnerArguments(body=body, session_id=session_id)
runner_args.cli_args = args
asyncio.create_task(bot_module.bot(runner_args))
return result
elif transport in TELEPHONY_TRANSPORTS:
# Telephony: the bot starts when the provider connects to /ws.
# Return the WebSocket URL so the caller knows where to point their provider.
scheme = "wss" if args.host != "localhost" else "ws"
return StartBotResult(
wsUrl=f"{scheme}://{args.host}:{args.port}/ws",
)
elif transport == "websocket":
# Plain WebSocket: the bot starts when the client connects to /ws-client.
scheme = "wss" if args.host != "localhost" else "ws"
session_id = str(uuid.uuid4())
return StartBotResult(
wsUrl=f"{scheme}://{args.host}:{args.port}/ws-client",
sessionId=session_id,
token="mock_token",
)
else:
raise HTTPException(
status_code=400,
detail=f"Unknown transport '{transport}'.",
)
# Set up transport-specific routes
if args.transport == "webrtc":
_setup_webrtc_routes(app, args)
if args.whatsapp:
_setup_whatsapp_routes(app, args)
elif args.transport == "daily":
_setup_daily_routes(app, args)
elif args.transport in TELEPHONY_TRANSPORTS:
_setup_telephony_routes(app, args)
else:
logger.warning(f"Unknown transport type: {args.transport}")
def _resolve_download_path(folder: str, filename: str) -> Path:
@@ -589,30 +220,11 @@ def _resolve_download_path(folder: str, filename: str) -> Path:
return file_path
def _setup_frontend_routes(app: FastAPI):
"""Mount the prebuilt frontend UI and root redirect for all transports."""
try:
from pipecat_ai_prebuilt.frontend import PipecatPrebuiltUI
except ImportError as e:
logger.error(f"Prebuilt frontend not available: {e}")
return
app.mount("/client", PipecatPrebuiltUI)
@app.get("/", include_in_schema=False)
async def root_redirect():
"""Redirect root requests to client interface."""
return RedirectResponse(url="/client/")
def _setup_webrtc_routes(
app: FastAPI, args: argparse.Namespace, active_sessions: dict[str, dict[str, Any]]
):
def _setup_webrtc_routes(app: FastAPI, args: argparse.Namespace):
"""Set up WebRTC-specific routes."""
if not _transport_routes_enabled("webrtc"):
return
try:
from pipecat_ai_small_webrtc_prebuilt.frontend import SmallWebRTCPrebuiltUI
from pipecat.transports.smallwebrtc.connection import SmallWebRTCConnection
from pipecat.transports.smallwebrtc.request_handler import (
IceCandidate,
@@ -621,9 +233,30 @@ def _setup_webrtc_routes(
SmallWebRTCRequestHandler,
)
except ImportError as e:
logger.warning(f"WebRTC routes disabled after dependency check passed: {e}")
logger.error(f"WebRTC transport dependencies not installed: {e}")
return
class IceServer(TypedDict, total=False):
urls: str | list[str]
class IceConfig(TypedDict):
iceServers: list[IceServer]
class StartBotResult(TypedDict, total=False):
sessionId: str
iceConfig: IceConfig | None
# In-memory store of active sessions: session_id -> session info
active_sessions: dict[str, dict[str, Any]] = {}
# Mount the frontend
app.mount("/client", SmallWebRTCPrebuiltUI)
@app.get("/", include_in_schema=False)
async def root_redirect():
"""Redirect root requests to client interface."""
return RedirectResponse(url="/client/")
@app.get("/files/{filename:path}")
async def download_file(filename: str):
"""Handle file downloads."""
@@ -682,6 +315,29 @@ def _setup_webrtc_routes(
await small_webrtc_handler.handle_patch_request(request)
return {"status": "success"}
@app.post("/start")
async def rtvi_start(request: Request):
"""Mimic Pipecat Cloud's /start endpoint."""
# Parse the request body
try:
request_data = await request.json()
logger.debug(f"Received request: {request_data}")
except Exception as e:
logger.error(f"Failed to parse request body: {e}")
request_data = {}
# Store session info immediately in memory, replicate the behavior expected on Pipecat Cloud
session_id = str(uuid.uuid4())
active_sessions[session_id] = request_data.get("body", {})
result: StartBotResult = {"sessionId": session_id}
if request_data.get("enableDefaultIceServers"):
result["iceConfig"] = IceConfig(
iceServers=[IceServer(urls=["stun:stun.l.google.com:19302"])]
)
return result
@app.api_route(
"/sessions/{session_id}/{path:path}",
methods=["GET", "POST", "PUT", "PATCH", "DELETE"],
@@ -906,13 +562,13 @@ def _setup_whatsapp_routes(app: FastAPI, args: argparse.Namespace):
def _setup_daily_routes(app: FastAPI, args: argparse.Namespace):
"""Set up Daily-specific routes."""
if not _transport_routes_enabled("daily"):
return
@app.get("/daily")
@app.get("/")
async def create_room_and_start_agent():
"""Launch a Daily bot and redirect to room."""
logger.debug("Starting bot with Daily transport and redirecting to Daily room")
print("Starting bot with Daily transport and redirecting to Daily room")
import aiohttp
from pipecat.runner.daily import configure
@@ -928,6 +584,105 @@ def _setup_daily_routes(app: FastAPI, args: argparse.Namespace):
asyncio.create_task(bot_module.bot(runner_args))
return RedirectResponse(room_url)
@app.post("/start")
async def start_agent(request: Request):
"""Handler for /start endpoints.
Expects POST body like::
{
"createDailyRoom": true,
"dailyRoomProperties": { "start_video_off": true },
"dailyMeetingTokenProperties": { "is_owner": true, "user_name": "Bot" },
"body": { "custom_data": "value" }
}
"""
print("Starting bot with Daily transport")
# Parse the request body
try:
request_data = await request.json()
logger.debug(f"Received request: {request_data}")
except Exception as e:
logger.error(f"Failed to parse request body: {e}")
request_data = {}
create_daily_room = request_data.get("createDailyRoom", False)
body = request_data.get("body", {})
daily_room_properties_dict = request_data.get("dailyRoomProperties", None)
daily_token_properties_dict = request_data.get("dailyMeetingTokenProperties", None)
bot_module = _get_bot_module()
existing_room_url = os.getenv("DAILY_ROOM_URL")
session_id = str(uuid.uuid4())
result = None
# Configure room if:
# 1. Explicitly requested via createDailyRoom in payload
# 2. Using pre-configured room from DAILY_ROOM_URL env var
if create_daily_room or existing_room_url:
import aiohttp
from pipecat.runner.daily import configure
from pipecat.transports.daily.utils import (
DailyMeetingTokenProperties,
DailyRoomProperties,
)
async with aiohttp.ClientSession() as session:
# Parse dailyRoomProperties if provided
room_properties = None
if daily_room_properties_dict:
# Apply Pipecat Cloud's session policy if caller didn't override.
daily_room_properties_dict.setdefault(
"exp", time.time() + PIPECAT_ROOM_EXP_HOURS * 3600
)
daily_room_properties_dict.setdefault("eject_at_room_exp", True)
try:
room_properties = DailyRoomProperties(**daily_room_properties_dict)
logger.debug(f"Using custom room properties: {room_properties}")
except Exception as e:
logger.error(f"Failed to parse dailyRoomProperties: {e}")
# Continue without custom properties
# Parse dailyMeetingTokenProperties if provided
token_properties = None
if daily_token_properties_dict:
try:
token_properties = DailyMeetingTokenProperties(
**daily_token_properties_dict
)
logger.debug(f"Using custom token properties: {token_properties}")
except Exception as e:
logger.error(f"Failed to parse dailyMeetingTokenProperties: {e}")
# Continue without custom properties
room_url, token = await configure(
session,
room_exp_duration=PIPECAT_ROOM_EXP_HOURS,
room_properties=room_properties,
token_properties=token_properties,
)
runner_args = DailyRunnerArguments(
room_url=room_url, token=token, body=body, session_id=session_id
)
result = {
"dailyRoom": room_url,
"dailyToken": token,
"sessionId": session_id,
}
else:
runner_args = RunnerArguments(body=body, session_id=session_id)
# Update CLI args.
runner_args.cli_args = args
# Start the bot in the background
asyncio.create_task(bot_module.bot(runner_args))
return result
if args.dialin:
@app.post("/daily-dialin-webhook")
@@ -976,6 +731,8 @@ def _setup_daily_routes(app: FastAPI, args: argparse.Namespace):
detail="Missing required fields: From, To, callId, callDomain",
)
import aiohttp
from pipecat.runner.daily import configure
from pipecat.runner.types import DailyDialinRequest, DialinSettings
@@ -1044,54 +801,44 @@ def _setup_daily_routes(app: FastAPI, args: argparse.Namespace):
def _setup_telephony_routes(app: FastAPI, args: argparse.Namespace):
"""Set up telephony-specific routes.
The WebSocket endpoint (``/ws``) is always registered so providers can
connect directly. The XML webhook (``POST /``) is only registered when a
specific telephony transport is chosen via ``-t`` because the XML template
is provider-specific and requires a proxy hostname (``--proxy``).
"""
if not _transport_routes_enabled("telephony"):
return
if args.transport in TELEPHONY_TRANSPORTS:
# XML response templates (Exotel doesn't use XML webhooks)
XML_TEMPLATES = {
"twilio": f"""<?xml version="1.0" encoding="UTF-8"?>
"""Set up telephony-specific routes."""
# XML response templates (Exotel doesn't use XML webhooks)
XML_TEMPLATES = {
"twilio": f"""<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Connect>
<Stream url="wss://{args.proxy}/ws"></Stream>
</Connect>
<Pause length="40"/>
</Response>""",
"telnyx": f"""<?xml version="1.0" encoding="UTF-8"?>
"telnyx": f"""<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Connect>
<Stream url="wss://{args.proxy}/ws" bidirectionalMode="rtp"></Stream>
</Connect>
<Pause length="40"/>
</Response>""",
"plivo": f"""<?xml version="1.0" encoding="UTF-8"?>
"plivo": f"""<?xml version="1.0" encoding="UTF-8"?>
<Response>
<Stream bidirectional="true" keepCallAlive="true" contentType="audio/x-mulaw;rate=8000">wss://{args.proxy}/ws</Stream>
</Response>""",
}
}
@app.post("/")
async def start_call():
"""Handle telephony webhook and return XML response."""
if args.transport == "exotel":
# Exotel doesn't use POST webhooks - redirect to proper documentation
logger.debug("POST Exotel endpoint - not used")
return {
"error": "Exotel doesn't use POST webhooks",
"websocket_url": f"wss://{args.proxy}/ws",
"note": "Configure the WebSocket URL above in your Exotel App Bazaar Voicebot Applet",
}
else:
logger.debug(f"POST {args.transport.upper()} XML")
xml_content = XML_TEMPLATES.get(args.transport, "<Response></Response>")
return HTMLResponse(content=xml_content, media_type="application/xml")
@app.post("/")
async def start_call():
"""Handle telephony webhook and return XML response."""
if args.transport == "exotel":
# Exotel doesn't use POST webhooks - redirect to proper documentation
logger.debug("POST Exotel endpoint - not used")
return {
"error": "Exotel doesn't use POST webhooks",
"websocket_url": f"wss://{args.proxy}/ws",
"note": "Configure the WebSocket URL above in your Exotel App Bazaar Voicebot Applet",
}
else:
logger.debug(f"POST {args.transport.upper()} XML")
xml_content = XML_TEMPLATES.get(args.transport, "<Response></Response>")
return HTMLResponse(content=xml_content, media_type="application/xml")
@app.websocket("/ws")
async def websocket_endpoint(websocket: WebSocket):
@@ -1100,6 +847,11 @@ def _setup_telephony_routes(app: FastAPI, args: argparse.Namespace):
logger.debug("WebSocket connection accepted")
await _run_telephony_bot(websocket, args)
@app.get("/")
async def start_agent():
"""Simple status endpoint for telephony transports."""
return {"status": f"Bot started with {args.transport}"}
async def _run_daily_direct(args: argparse.Namespace):
"""Run Daily bot with direct connection (no FastAPI server)."""
@@ -1131,25 +883,6 @@ async def _run_daily_direct(args: argparse.Namespace):
await bot_module.bot(runner_args)
async def _run_vonage():
"""Run Vonage bot (no FastAPI server)."""
logger.info("Running Vonage transport...")
application_id, session_id, token = await configure_vonage()
runner_args = VonageRunnerArguments(
application_id=application_id, vonage_session_id=session_id, token=token
)
runner_args.handle_sigint = True
# Get the bot module and run it directly
bot_module = _get_bot_module()
print(f"Joining Vonage session: {runner_args.vonage_session_id}")
print()
await bot_module.bot(runner_args)
def _validate_and_clean_proxy(proxy: str) -> str:
"""Validate and clean proxy hostname, removing protocol if present."""
if not proxy:
@@ -1189,27 +922,22 @@ def runner_port() -> int:
def main(parser: argparse.ArgumentParser | None = None):
"""Start the Pipecat development runner.
Parses command-line arguments and starts a FastAPI server that supports
WebRTC, Daily, and telephony transports simultaneously. Clients declare
which transport to use via the ``transport`` field in the ``/start`` body.
When ``-t`` is provided, the server restricts ``/start`` to that transport
only and displays transport-specific startup information.
Parses command-line arguments and starts a FastAPI server configured
for the specified transport type.
The runner discovers and runs any ``bot(runner_args)`` function found in the
calling module.
Command-line arguments:
- --host: Server host address (default: localhost)
- --host: Server host address (default: localhost) 879
- --port: Server port (default: 7860)
- -t/--transport: Restrict to a single transport and set as default for /start
(daily, webrtc, twilio, telnyx, plivo, exotel). Omit to support all transports.
- -t/--transport: Transport type (daily, webrtc, twilio, telnyx, plivo, exotel)
- -x/--proxy: Public proxy hostname for telephony webhooks
- -d/--direct: Connect directly to Daily room (automatically sets transport to daily)
- -f/--folder: Path to downloads folder
- --dialin: Enable Daily PSTN dial-in webhook handling
- --dialin: Enable Daily PSTN dial-in webhook handling (requires Daily transport)
- --esp32: Enable SDP munging for ESP32 compatibility (requires --host with IP address)
- --whatsapp: Ensure required WhatsApp environment variables are present
- --whatsapp: Ensure requried WhatsApp environment variables are present
- -v/--verbose: Increase logging verbosity
Args:
@@ -1229,12 +957,9 @@ def main(parser: argparse.ArgumentParser | None = None):
"-t",
"--transport",
type=str,
choices=["daily", "vonage", "webrtc", *TELEPHONY_TRANSPORTS],
default=None,
help=(
"Restrict the server to a single transport and set it as the default for /start. "
"Omit to support all transports simultaneously (default behaviour)."
),
choices=["daily", "webrtc", *TELEPHONY_TRANSPORTS],
default="webrtc",
help="Transport type",
)
parser.add_argument("-x", "--proxy", help="Public proxy host name")
parser.add_argument(
@@ -1252,7 +977,7 @@ def main(parser: argparse.ArgumentParser | None = None):
"--dialin",
action="store_true",
default=False,
help="Enable Daily PSTN dial-in webhook handling",
help="Enable Daily PSTN dial-in webhook handling (requires Daily transport)",
)
parser.add_argument(
"--esp32",
@@ -1264,7 +989,7 @@ def main(parser: argparse.ArgumentParser | None = None):
"--whatsapp",
action="store_true",
default=False,
help="Ensure required WhatsApp environment variables are present",
help="Ensure requried WhatsApp environment variables are present",
)
args = parser.parse_args()
@@ -1273,13 +998,12 @@ def main(parser: argparse.ArgumentParser | None = None):
if args.proxy:
args.proxy = _validate_and_clean_proxy(args.proxy)
# --direct implies Daily transport
if args.direct:
if args.transport is None or args.transport == "daily":
args.transport = "daily"
else:
logger.error("--direct flag only works with Daily transport (-t daily)")
return
# Auto-set transport to daily if --direct is used without explicit transport
if args.direct and args.transport == "webrtc": # webrtc is the default
args.transport = "daily"
elif args.direct and args.transport != "daily":
logger.error("--direct flag only works with Daily transport (-t daily)")
return
# Validate ESP32 requirements
if args.esp32 and args.host == "localhost":
@@ -1287,7 +1011,7 @@ def main(parser: argparse.ArgumentParser | None = None):
return
# Validate dial-in requirements
if args.dialin and args.transport is not None and args.transport != "daily":
if args.dialin and args.transport != "daily":
logger.error("--dialin flag only works with Daily transport (-t daily)")
return
@@ -1305,12 +1029,28 @@ def main(parser: argparse.ArgumentParser | None = None):
asyncio.run(_run_daily_direct(args))
return
# Print startup message
_print_startup_message(args)
if args.transport == "vonage":
asyncio.run(_run_vonage())
# Print startup message for server-based transports
if args.transport == "webrtc":
print()
if args.esp32:
print(f"🚀 Bot ready! (ESP32 mode)")
elif args.whatsapp:
print(f"🚀 Bot ready! (WhatsApp)")
else:
print(f"🚀 Bot ready!")
print(f" → Open http://{args.host}:{args.port}/client in your browser")
print()
elif args.transport == "daily":
print()
print(f"🚀 Bot ready!")
if args.dialin:
print(
f" → Daily dial-in webhook: http://{args.host}:{args.port}/daily-dialin-webhook"
)
print(f" → Configure this URL in your Daily phone number settings")
else:
print(f" → Open http://{args.host}:{args.port} in your browser to start a session")
print()
return
RUNNER_DOWNLOADS_FOLDER = args.folder
RUNNER_HOST = args.host

View File

@@ -99,35 +99,16 @@ class DailyRunnerArguments(RunnerArguments):
token: str | None = None
@dataclass
class VonageRunnerArguments(RunnerArguments):
"""Vonage transport session arguments for the runner.
Parameters:
application_id: Vonage application ID
vonage_session_id: Vonage session ID
token: Vonage Session Token
"""
application_id: str
vonage_session_id: str
token: str
@dataclass
class WebSocketRunnerArguments(RunnerArguments):
"""WebSocket transport session arguments for the runner.
Parameters:
websocket: WebSocket connection for audio streaming
transport_type: Transport type identifier. Set to ``"websocket"`` for plain
WebSocket connections; ``None`` triggers auto-detection from the first
telephony provider message.
body: Additional request data
"""
websocket: WebSocket
transport_type: str | None = None
@dataclass

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