o4-mini throws "Unsupported parameter: 'parallel_tool_calls'"

[storlien]

Hi

When trying to use the openai.o4-mini-2025-04-16 model, the interactive session throws Error code: 400 - {'error': {'message': "Unsupported parameter: 'parallel_tool_calls' is not supported with this model.", 'type': 'invalid_request_error', 'param': 'parallel_tool_calls', 'code': 'unsupported_parameter'}} after the first query.

I also tried setting the parallel_tools_calls to False in the request_params in the agent declarator, but it still throws the error.

[evalstate]

Thanks for catching this one. I'll release the fix shortly, if you want to patch the code around line ~85 of augmented_llm_openai.py

# TODO -- move this to model capabilities, add o4.
        chosen_model = self.default_request_params.model if self.default_request_params else None
        self._reasoning = chosen_model and (
            chosen_model.startswith("o3")
            or chosen_model.startswith("o1")
            or chosen_model.startswith("o4")
        )

I might actually follow through on that TODO as well....!

[storlien]

Hey @evalstate

I'm working on a project utilizing your Fast-Agent framework for the Norwegian government. I think it might be of great interest to you! Would you like to have a quick chat about the possibilities that are available with Fast-Agent? I have some questions regarding that.

Please send me an email at carl.edward.storlien@accenture.com

[evalstate]

Hi this should be fixed in 0.2.42 and above:

I'll drop you an email - would be great to have a chat.