From 6b5bcae86fe9d524e1f47531681b1469c93c0394 Mon Sep 17 00:00:00 2001
From: Cale Shapera <25466659+cshape@users.noreply.github.com>
Date: Thu, 22 Jan 2026 11:21:15 -0800
Subject: [PATCH] change default Inworld TTS model to inworld-tts-1.5-max
 (#3531)

---
 changelog/3531.changed.md           | 2 ++
 src/pipecat/services/inworld/tts.py | 4 ++--
 2 files changed, 4 insertions(+), 2 deletions(-)
 create mode 100644 changelog/3531.changed.md

diff --git a/changelog/3531.changed.md b/changelog/3531.changed.md
new file mode 100644
index 000000000..326d8d4d1
--- /dev/null
+++ b/changelog/3531.changed.md
@@ -0,0 +1,2 @@
+- Changed default Inworld TTS model from `inworld-tts-1` to                      
+ `inworld-tts-1.5-max`.
diff --git a/src/pipecat/services/inworld/tts.py b/src/pipecat/services/inworld/tts.py
index 38617ac15..4e6ec3f4e 100644
--- a/src/pipecat/services/inworld/tts.py
+++ b/src/pipecat/services/inworld/tts.py
@@ -72,7 +72,7 @@ class InworldHttpTTSService(WordTTSService):
         api_key: str,
         aiohttp_session: aiohttp.ClientSession,
         voice_id: str = "Ashley",
-        model: str = "inworld-tts-1",
+        model: str = "inworld-tts-1.5-max",
         streaming: bool = True,
         sample_rate: Optional[int] = None,
         encoding: str = "LINEAR16",
@@ -427,7 +427,7 @@ class InworldTTSService(AudioContextWordTTSService):
         *,
         api_key: str,
         voice_id: str = "Ashley",
-        model: str = "inworld-tts-1",
+        model: str = "inworld-tts-1.5-max",
         url: str = "wss://api.inworld.ai/tts/v1/voice:streamBidirectional",
         sample_rate: Optional[int] = None,
         encoding: str = "LINEAR16",