Checks

• I have updated to the lastest minor and patch version of Strands
• I have checked the documentation and this is not expected behavior
• I have searched ./issues and there are no duplicates of my issue

Strands Version

1.11.0

Python Version

3.11.13

Operating System

15.7.1

Installation Method

pip

Steps to Reproduce

import asyncio
import httpx
from strands import Agent
from strands.models.openai import OpenAIModel

client = httpx.AsyncClient()

agent = Agent(
    model=OpenAIModel(
        model_id="gpt-4o-mini-2024-07-18",
        client_args={
            "api_key": "your-openai-key",
            "http_client": client
        }
    )
)

async def chat(prompt: str):
    result = await agent.invoke_async(prompt)
    print(result)

async def main():
    await chat("this works")
    await chat("this doesn't work")

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

Expected Behavior

As per the documentation, I should be able to pass any parameters supported by the OpenAI client in the constructor of the OpenAIModel.

That should include the http_client parameter, that let me pass a custom HTTPx client to the OpenAI client, as documented in here.

Actual Behavior

When passing a custom HTTPx client, only the first request will pass through, because that client will be automatically closed by Strands right after processing it. Subsequent requests fails.

Additional Context

No response

Possible Solution

No response

Related Issues

No response