Function tools with reasoning_effort are not supported for gpt-5.6-terra in /v1/chat/completions

--- OpenAI ---

LANGCHAIN_PROVIDER=openai LANGCHAIN_MODEL_NAME=gpt-5.6-terra OPENAI_BASE_URL=https://api.openai.com/v1

src.providers.chat.ProviderStreamError: provider_stream_error provider=openai model=gpt-5.6-terra: BadRequestError: Error code: 400 - {'error': {'message': "Function tools with reasoning_effort are not supported for gpt-5.6-terra in /v1/chat/completions. To use function tools, use /v1/responses or set reasoning_effort to 'none'.", 'type': 'invalid_request_error', 'param': 'reasoning_effort', 'code': None}}