From f269b52a1591d7c9495bde478acb584928fad2f3 Mon Sep 17 00:00:00 2001
From: mateo-berri <277851410+mateo-berri@users.noreply.github.com>
Date: Sat, 29 Aug 2026 15:26:05 -0700
Subject: [PATCH] refactor(speech): type the bridge voice param as a mapping
 and wrap a long test line

---
 .../speech/speech_to_completion_bridge/transformation.py      | 2 +-
 .../speech/speech_to_completion_bridge/test_transformation.py | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/litellm/endpoints/speech/speech_to_completion_bridge/transformation.py b/litellm/endpoints/speech/speech_to_completion_bridge/transformation.py
index 5e38b644300..9b757ce86be 100644
--- a/litellm/endpoints/speech/speech_to_completion_bridge/transformation.py
+++ b/litellm/endpoints/speech/speech_to_completion_bridge/transformation.py
@@ -45,7 +45,7 @@ class SpeechToCompletionBridgeTransformationHandler:
         return response_format if isinstance(response_format, str) else None
 
     def _chat_audio_param(
-        self, model: str, voice: str | dict | None, optional_params: Mapping[str, object]
+        self, model: str, voice: str | Mapping[str, object] | None, optional_params: Mapping[str, object]
     ) -> ChatAudioParam | None:
         if not isinstance(voice, str):
             return None
diff --git a/tests/test_litellm/endpoints/speech/speech_to_completion_bridge/test_transformation.py b/tests/test_litellm/endpoints/speech/speech_to_completion_bridge/test_transformation.py
index 9367d9d6d16..c0c720bbaf6 100644
--- a/tests/test_litellm/endpoints/speech/speech_to_completion_bridge/test_transformation.py
+++ b/tests/test_litellm/endpoints/speech/speech_to_completion_bridge/test_transformation.py
@@ -13,7 +13,9 @@ GEMINI_TTS_MODEL: Final = "gemini-3.1-flash-tts-preview"
 
 
 def _bridge_request(response_format: str | None) -> dict:
-    optional_params: Final = {"temperature": 0.4} if response_format is None else {"temperature": 0.4, "response_format": response_format}
+    optional_params: Final = (
+        {"temperature": 0.4} if response_format is None else {"temperature": 0.4, "response_format": response_format}
+    )
     return SpeechToCompletionBridgeTransformationHandler().transform_request(
         model=GEMINI_TTS_MODEL,
         input="Hello from LiteLLM",