APIConnectionError raised when using AsyncOpenAI along FastAPI and uvicorn(uvloop)

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

Exception raised when using AsyncOpenAI with FastAPI and uvicorn issue seems to be compability issues with uvloop that is added through the extras = ["standard"].

fastapi = "0.115.6"
uvicorn = {extras = ["standard"], version = "0.32.1"}
openai = "^1.54.4"

Installing dependencies manually and leaving out uvloop works.

fastapi = "0.115.6"
uvicorn = "0.32.1"
# from extras = ["standard"]
websockets="14.1"
watchfiles="1.0.0"
pyyaml="6.0.2"
python-dotenv="1.0.1"
httptools="0.6.4"
# uvloop="0.21.0" leads to openAI async exception

To Reproduce

1. pyproject.toml with poetry dep.
   [tool.poetry.dependencies]
   python = ">=3.11,<3.12"
   fastapi = "0.115.6"
   uvicorn = {extras = ["standard"], version = "0.32.1"}
   openai = "^1.54.4"

2. Run app main.py.

3. Call endpoint
   http://localhost:50051/test

Exception:
File "/Users/badrelfarri/Documents/Code/RevVue/simple-async-openai-assistant/.venv/lib/python3.11/site-packages/openai/_base_client.py", line 1610, in _request
raise APIConnectionError(request=request) from err
openai.APIConnectionError: Connection error.

Code snippets

main.py


from fastapi import FastAPI
import uvicorn
from openai import AsyncOpenAI

apiKey = ""
app = FastAPI()

@app.get("/test")
async def test():
    systemMessage = "Get a title for the conversation, the title shall not have more than 4 words"
    messages = [
        {"role": "system", "content": systemMessage},
        {
            "role": "user",
            "content": "Is the earth flat",
        },
    ]
    result = await AsyncOpenAI(api_key=apiKey, timeout=30).chat.completions.create(
        model="gpt-4o-mini",
        messages=messages,
    )
    title = result.choices[0].message.content
    return title

if __name__ == '__main__':
    uvicorn.run(app, host="0.0.0.0", port=50051)

OS

macOS

Python version

Python 3.11.4

Library version

openai v1.54.4

Start with the pyproject.toml dependency combinations and the main.py example, then reproduce the /test request under Python 3.11 with uvloop enabled and disabled. Compare the resulting traceback and isolate whether the failure is in the library or the event-loop integration; done means identifying a reproducible cause and a verified resolution for the listed versions.