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Add retrieval config support for google LLM #4408

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Merged
chenghao-mou merged 1 commit into from
Jan 2, 2026
Merged

Add retrieval config support for google LLM #4408

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26 changes: 22 additions & 4 deletions livekit-plugins/livekit-plugins-google/livekit/plugins/google/llm.py
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Original file line number Diff line number Diff line change
Expand Up @@ -63,6 +63,7 @@ class _LLMOptions:
presence_penalty: NotGivenOr[float]
frequency_penalty: NotGivenOr[float]
thinking_config: NotGivenOr[types.ThinkingConfigOrDict]
retrieval_config: NotGivenOr[types.RetrievalConfigOrDict]
automatic_function_calling_config: NotGivenOr[types.AutomaticFunctionCallingConfigOrDict]
http_options: NotGivenOr[types.HttpOptions]
seed: NotGivenOr[int]
Expand Down Expand Up @@ -96,6 +97,7 @@ def __init__(
frequency_penalty: NotGivenOr[float] = NOT_GIVEN,
tool_choice: NotGivenOr[ToolChoice] = NOT_GIVEN,
thinking_config: NotGivenOr[types.ThinkingConfigOrDict] = NOT_GIVEN,
retrieval_config: NotGivenOr[types.RetrievalConfigOrDict] = NOT_GIVEN,
automatic_function_calling_config: NotGivenOr[
types.AutomaticFunctionCallingConfigOrDict
] = NOT_GIVEN,
Expand Down Expand Up @@ -127,6 +129,7 @@ def __init__(
frequency_penalty (float, optional): Penalizes the model for repeating words. Defaults to None.
tool_choice (ToolChoice, optional): Specifies whether to use tools during response generation. Defaults to "auto".
thinking_config (ThinkingConfigOrDict, optional): The thinking configuration for response generation. Defaults to None.
retrieval_config (RetrievalConfigOrDict, optional): The retrieval configuration for response generation. Defaults to None.
automatic_function_calling_config (AutomaticFunctionCallingConfigOrDict, optional): The automatic function calling configuration for response generation. Defaults to None.
http_options (HttpOptions, optional): The HTTP options to use for the session.
seed (int, optional): Random seed for reproducible generation. Defaults to None.
Expand Down Expand Up @@ -193,6 +196,7 @@ def __init__(
presence_penalty=presence_penalty,
frequency_penalty=frequency_penalty,
thinking_config=thinking_config,
retrieval_config=retrieval_config,
automatic_function_calling_config=automatic_function_calling_config,
http_options=http_options,
seed=seed,
Expand Down Expand Up @@ -239,14 +243,21 @@ def chat(
tool_choice = (
cast(ToolChoice, tool_choice) if is_given(tool_choice) else self._opts.tool_choice
)
retrieval_config = (
self._opts.retrieval_config if is_given(self._opts.retrieval_config) else None
)
if isinstance(retrieval_config, dict):
retrieval_config = types.RetrievalConfig.model_validate(retrieval_config)

if is_given(tool_choice):
gemini_tool_choice: types.ToolConfig
if isinstance(tool_choice, dict) and tool_choice.get("type") == "function":
gemini_tool_choice = types.ToolConfig(
function_calling_config=types.FunctionCallingConfig(
mode=types.FunctionCallingConfigMode.ANY,
allowed_function_names=[tool_choice["function"]["name"]],
)
),
retrieval_config=retrieval_config,
)
extra["tool_config"] = gemini_tool_choice
elif tool_choice == "required":
Expand All @@ -259,23 +270,30 @@ def chat(
function_calling_config=types.FunctionCallingConfig(
mode=types.FunctionCallingConfigMode.ANY,
allowed_function_names=tool_names or None,
)
),
retrieval_config=retrieval_config,
)
extra["tool_config"] = gemini_tool_choice
elif tool_choice == "auto":
gemini_tool_choice = types.ToolConfig(
function_calling_config=types.FunctionCallingConfig(
mode=types.FunctionCallingConfigMode.AUTO,
)
),
retrieval_config=retrieval_config,
)
extra["tool_config"] = gemini_tool_choice
elif tool_choice == "none":
gemini_tool_choice = types.ToolConfig(
function_calling_config=types.FunctionCallingConfig(
mode=types.FunctionCallingConfigMode.NONE,
)
),
retrieval_config=retrieval_config,
)
extra["tool_config"] = gemini_tool_choice
elif retrieval_config:
extra["tool_config"] = types.ToolConfig(
retrieval_config=retrieval_config,
)

if is_given(response_format):
extra["response_schema"] = to_response_format(response_format) # type: ignore
Expand Down
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