From c7ef23dd2253000b4c842a17606ed43494d752ab Mon Sep 17 00:00:00 2001
From: yukiobata1 <obata@kotobasamurai.jp>
Date: Tue, 10 Mar 2026 18:22:20 +0900
Subject: [PATCH 1/2] Update Fish Audio default model from s1 to s2-pro

---
 src/pipecat/services/fish/tts.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/pipecat/services/fish/tts.py b/src/pipecat/services/fish/tts.py
index 4974dfa37..f21b42b97 100644
--- a/src/pipecat/services/fish/tts.py
+++ b/src/pipecat/services/fish/tts.py
@@ -172,7 +172,7 @@ class FishAudioTTSService(InterruptibleTTSService):
 
         # 1. Initialize default_settings with hardcoded defaults
         default_settings = FishAudioTTSSettings(
-            model="s1",
+            model="s2-pro",
             voice=None,
             language=None,
             latency="balanced",

From ceb53e044b0407b9cfa58a0510a9b5dccee4758e Mon Sep 17 00:00:00 2001
From: yukiobata1 <obata@kotobasamurai.jp>
Date: Tue, 10 Mar 2026 19:29:47 +0900
Subject: [PATCH 2/2] Add changelog for #3973

---
 changelog/3973.changed.md | 1 +
 1 file changed, 1 insertion(+)
 create mode 100644 changelog/3973.changed.md

diff --git a/changelog/3973.changed.md b/changelog/3973.changed.md
new file mode 100644
index 000000000..d6834ce8e
--- /dev/null
+++ b/changelog/3973.changed.md
@@ -0,0 +1 @@
+- Updated `FishAudioTTSService` default model from `s1` to `s2-pro`, matching Fish Audio's latest recommended model for improved quality and speed.