Support raw CoT reasoning from LM Studio and other OpenAI Responses-compatible APIs #3559
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|---|---|---|
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@@ -137,6 +137,12 @@ | |
| by using that prefix like `x-openai-connector:<connector-id>` in a URL, you can pass a connector ID to a model. | ||
| """ | ||
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| _RAW_COT_ID_SUFFIX = '-content-' | ||
| """ | ||
| Suffix used in ThinkingPart IDs to identify raw Chain of Thought from gpt-oss models. | ||
| Raw CoT IDs follow the pattern 'rs_123-content-0', 'rs_123-content-1', etc. | ||
| """ | ||
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| _CHAT_FINISH_REASON_MAP: dict[ | ||
| Literal['stop', 'length', 'tool_calls', 'content_filter', 'function_call'], FinishReason | ||
| ] = { | ||
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@@ -1152,8 +1158,15 @@ def _process_response( # noqa: C901 | |
| provider_name=self.system, | ||
| ) | ||
| ) | ||
| # Handle raw CoT content from gpt-oss models (via LM Studio, vLLM, etc.) | ||
| if item.content: | ||
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| for idx, content_item in enumerate(item.content): | ||
| items.append( | ||
| ThinkingPart( | ||
| content=content_item.text, | ||
| id=f'{item.id}{_RAW_COT_ID_SUFFIX}{idx}', | ||
|
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| ) | ||
| ) | ||
| elif isinstance(item, responses.ResponseOutputMessage): | ||
| for content in item.content: | ||
| if isinstance(content, responses.ResponseOutputText): # pragma: no branch | ||
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@@ -1184,7 +1197,7 @@ def _process_response( # noqa: C901 | |
| items.append(file_part) | ||
| items.append(return_part) | ||
| elif isinstance(item, responses.ResponseComputerToolCall): # pragma: no cover | ||
| # OpenAI's `computer-use` model is no longer available | ||
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| pass | ||
| elif isinstance(item, responses.ResponseCustomToolCall): # pragma: no cover | ||
| # Support is being implemented in https://github.com/pydantic/pydantic-ai/pull/2572 | ||
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@@ -1668,6 +1681,11 @@ async def _map_messages( # noqa: C901 | |
| # If `send_item_ids` is false, we won't send the `BuiltinToolReturnPart`, but OpenAI does not have a type for files from the assistant. | ||
| pass | ||
| elif isinstance(item, ThinkingPart): | ||
| # we don't send back raw CoT | ||
| # https://cookbook.openai.com/articles/gpt-oss/handle-raw-cot | ||
| if _RAW_COT_ID_SUFFIX in (item.id or ''): | ||
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| continue | ||
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| if item.id and send_item_ids: | ||
| signature: str | None = None | ||
| if ( | ||
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@@ -2138,6 +2156,17 @@ async def _get_event_iterator(self) -> AsyncIterator[ModelResponseStreamEvent]: | |
| id=chunk.item_id, | ||
| ) | ||
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| elif isinstance(chunk, responses.ResponseReasoningTextDeltaEvent): | ||
| raw_cot_id = f'{chunk.item_id}{_RAW_COT_ID_SUFFIX}{chunk.content_index}' | ||
| yield self._parts_manager.handle_thinking_delta( | ||
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| vendor_part_id=raw_cot_id, | ||
| content=chunk.delta, | ||
| id=raw_cot_id, | ||
| ) | ||
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| elif isinstance(chunk, responses.ResponseReasoningTextDoneEvent): | ||
| pass # content already accumulated via delta events | ||
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| elif isinstance(chunk, responses.ResponseOutputTextAnnotationAddedEvent): | ||
| # TODO(Marcelo): We should support annotations in the future. | ||
| pass # there's nothing we need to do here | ||
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Since https://platform.openai.com/docs/models/computer-use-preview and https://platform.openai.com/docs/guides/tools-computer-use don't say anything about the model being removed/deprecated, let's revert these changes.
The error you shared stated 'The model
computer-use-previewdoes not exist or you do not have access to it.', so maybe the reason was lack of access? In any case, let's remove this from this PR.