openai[patch]: support streaming with json_schema response format #29044
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🔌: openai
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Jan 6, 2025
| usage_metadata = chat_message.usage_metadata | ||
| else: | ||
| usage_metadata = None | ||
| message = AIMessageChunk( |
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i think we have a message to message chunk util
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Thanks, I poked around and found:
- message_chunk_to_message (I want to go the other way)
- A private function _msg_to_chunk -- this function actually loses the parsed representation because it casts to/from dict. It's used in
merge_message_runswhich isn't used in monorepo, I see it's used in langchain-aws.
Let me know if you think it's important to add a util or I've missed it. Note I actually overwrite content to be "" so it's not a perfect copy.
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response_formatbefore, usage metadata will disappear unless you setstream_usage=True.Response format
Before:
After:
with_structured_output
For pydantic output, behavior of
with_structured_outputis unchanged (except for warning disappearing), because we pluck the parsed representation straight from OpenAI, and OpenAI doesn't return it until the stream is completed. Open to alternatives (e.g., parsing from content or intermediate dict chunks generated by OpenAI).Before:
After: