diff --git a/changelog/4386.changed.md b/changelog/4386.changed.md
new file mode 100644
index 000000000..5ed3ad57c
--- /dev/null
+++ b/changelog/4386.changed.md
@@ -0,0 +1 @@
+- Updated the default `SonioxTTSService` model from `tts-rt-v1-preview` to the generally available `tts-rt-v1`.
diff --git a/src/pipecat/services/soniox/tts.py b/src/pipecat/services/soniox/tts.py
index 45c88156e..5bc7d33da 100644
--- a/src/pipecat/services/soniox/tts.py
+++ b/src/pipecat/services/soniox/tts.py
@@ -184,7 +184,7 @@ class SonioxTTSService(WebsocketTTSService):
         """
         # Initialize default_settings
         default_settings = self.Settings(
-            model="tts-rt-v1-preview",
+            model="tts-rt-v1",
             voice="Adrian",
             language=Language.EN,
         )