Update CHANGELOG

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Added
 
+- Added OpenTelemetry tracing for `GeminiMultimodalLiveLLMService` and
+  `OpenAIRealtimeBetaLLMService`.
+
 - Added `interruption_strategies` to `PipelineParams` using
   `MinWordsInterruptionStrategy` to specify minimum words required to interrupt
   the bot when it's speaking. Use
@@ -48,6 +51,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   `DailyTransport.stop_transcription()` to be able to start and stop Daily
   transcription dynamically (maybe with different settings).
 
+### Changed
+
+- Updated OpenTelemetry tracing attribute `metrics.ttfb_ms` to `metrics.ttfb`.
+  The attribute reports TTFB in seconds.
+
 ### Deprecated
 
 - `DailyTransport.send_dtmf()` is deprecated, push an `OutputDTMFFrame` or an

src/pipecat/utils/tracing/service_decorators.py

@@ -761,9 +761,9 @@ def traced_gemini_live(operation: str) -> Callable:
                                 _add_token_usage_to_span(current_span, tokens)
 
                         # Capture TTFB metric if available
-                        ttfb_ms = getattr(getattr(self, "_metrics", None), "ttfb_ms", None)
+                        ttfb = getattr(getattr(self, "_metrics", None), "ttfb", None)
-                        if ttfb_ms is not None:
+                        if ttfb is not None:
-                            current_span.set_attribute("metrics.ttfb_ms", ttfb_ms)
+                            current_span.set_attribute("metrics.ttfb", ttfb)
 
                         # Run the original function
                         result = await func(self, *args, **kwargs)
@@ -979,9 +979,9 @@ def traced_openai_realtime(operation: str) -> Callable:
                                 _add_token_usage_to_span(current_span, tokens)
 
                             # Capture TTFB metric if available
-                            ttfb_ms = getattr(getattr(self, "_metrics", None), "ttfb_ms", None)
+                            ttfb = getattr(getattr(self, "_metrics", None), "ttfb", None)
-                            if ttfb_ms is not None:
+                            if ttfb is not None:
-                                current_span.set_attribute("metrics.ttfb_ms", ttfb_ms)
+                                current_span.set_attribute("metrics.ttfb", ttfb)
 
                         # Run the original function
                         result = await func(self, *args, **kwargs)