ai-agents-openai-assistant-com-using-openaiassistantrunnable-create-assistant-wit-1c655535

THEN Remove the file_ids parameter from the create_assistant call. In LangChain's base.py, update the create_assistant method to stop passing file_ids to the OpenAI API. If file attachment is needed, use the newer API methods for attaching files after assistant creation.

# Old (fails on V2):
assistant = client.beta.assistants.create(
    name="LangChain Assistant",
    instructions="You are a math tutor.",
    tools=[{"type": "code_interpreter"}],
    model="gpt-4-1106-preview",
    file_ids=["file-xxx"]  # removed in V2
)
# New (LangChain fix): remove file_ids, attach files separately:
assistant = client.beta.assistants.create(
    name="LangChain Assistant",
    instructions="You are a math tutor.",
    tools=[{"type": "code_interpreter"}],
    model="gpt-4-1106-preview"
)