allow configurable api version in gemini realtime (#1656)

Author: jayeshp19

.changeset/modern-pandas-hunt.md

@@ -0,0 +1,5 @@
+---
+"livekit-plugins-google": patch
+---
+
+allow configurable api version in gemini realtime

livekit-plugins/livekit-plugins-google/livekit/plugins/google/beta/realtime/api_proto.py

@@ -6,7 +6,7 @@
 
 from ..._utils import _build_gemini_ctx, _build_tools
 
-LiveAPIModels = Literal["gemini-2.0-flash-001",]
+LiveAPIModels = Literal["gemini-2.0-flash-exp"]
 
 Voice = Literal["Puck", "Charon", "Kore", "Fenrir", "Aoede"]
 

livekit-plugins/livekit-plugins-google/livekit/plugins/google/beta/realtime/realtime_api.py

@@ -83,6 +83,7 @@ class Capabilities:
 class ModelOptions:
     model: LiveAPIModels | str
     api_key: str | None
+    api_version: str
     voice: Voice | str
     response_modalities: list[Modality] | None
     vertexai: bool
@@ -107,6 +108,7 @@ def __init__(
         instructions: str | None = None,
         model: LiveAPIModels | str = "gemini-2.0-flash-exp",
         api_key: str | None = None,
+        api_version: str = "v1alpha",
         voice: Voice | str = "Puck",
         modalities: list[Modality] = [Modality.AUDIO],
         enable_user_audio_transcription: bool = True,
@@ -136,6 +138,7 @@ def __init__(
         Args:
             instructions (str, optional): Initial system instructions for the model. Defaults to "".
             api_key (str or None, optional): Google Gemini API key. If None, will attempt to read from the environment variable GOOGLE_API_KEY.
+            api_version (str, optional): The version of the API to use. Defaults to "v1alpha".
             modalities (list[Modality], optional): Modalities to use, such as ["TEXT", "AUDIO"]. Defaults to ["AUDIO"].
             model (str or None, optional): The name of the model to use. Defaults to "gemini-2.0-flash-exp".
             voice (api_proto.Voice, optional): Voice setting for audio outputs. Defaults to "Puck".
@@ -187,6 +190,7 @@ def __init__(
         self._rt_sessions: list[GeminiRealtimeSession] = []
         self._opts = ModelOptions(
             model=model,
+            api_version=api_version,
             api_key=self._api_key,
             voice=voice,
             enable_user_audio_transcription=enable_user_audio_transcription,
@@ -289,7 +293,7 @@ def __init__(
             tools=tools,
         )
         self._client = genai.Client(
-            http_options=HttpOptions(api_version="v1alpha"),
+            http_options=HttpOptions(api_version=self._opts.api_version),
             api_key=self._opts.api_key,
             vertexai=self._opts.vertexai,
             project=self._opts.project,