background parameter is not being passed to create call in AsyncResponses client stream method

[peterychang]

Confirm this is an issue with the Python library and not an underlying OpenAI API

• This is an issue with the Python library

Describe the bug

The background parameter is not being passed through in this call

openai-python/src/openai/resources/responses/responses.py

Line 2370 in 4e28a42

api_request = self.create(

To Reproduce

Create a request with the client.responses.stream() call using the AsyncClient

Attempt to retrieve the stream with a message_id and sequence_number

You should get the error
openai.BadRequestError: Error code: 400 - {'error': {'message': 'This response cannot be streamed because it was not created with background=true.', 'type': 'invalid_request_error', 'param': 'stream', 'code': 'invalid_request_error'}}

Code snippets

import asyncio
from openai import AsyncOpenAI
from openai.types.responses.response_text_delta_event import ResponseTextDeltaEvent
from openai.types.responses.response_created_event import ResponseCreatedEvent
from pydantic import BaseModel

class OutputStruct(BaseModel):
    """A structured output for testing purposes."""

    location: str
    weather: str

async def main():
    client = AsyncOpenAI()

    input = [
        {
            'role': 'user',
            'content': [{'type': 'input_text', 'text': 'The weather in Seattle is sunny'}]
        },
        {
            'role': 'user',
            'content': [{'type': 'input_text', 'text': 'What is the weather in Seattle?'}]
        }
    ]

    conversation_id: str | None = None
    async with client.responses.stream(
        model="gpt-4o",
        input=input,
        background=True,
        store=True,
        text_format=OutputStruct,
    ) as stream:
        async for event in stream:
            if isinstance(event, ResponseCreatedEvent):
                conversation_id = event.response.id
            if isinstance(event, ResponseTextDeltaEvent):
                print(event.delta, end="", flush=True)

    assert conversation_id is not None
    
    async with client.responses.stream(
        response_id=conversation_id,
        text_format=OutputStruct,
        starting_after=5,
    ) as stream:
        async for event in stream:
            if isinstance(event, ResponseTextDeltaEvent):
                print(event.delta, end="", flush=True)

if __name__ == "__main__":
  asyncio.run(main())

OS

Ubuntu

Python version

Python 3.13

Library version

openai v1.99.9