reasoning

1 trace

• OpenAI GPT-5.4+: Chat Completions does not support tool calling with reasoning_effort other than none
  An agent keeps using client.chat.completions.create(..., tools=[...], reasoningeffort="high") with a GPT-5.4-or-later model and tool calling fails or is rejected. Fix: Either set reasoningeffort="none" on Chat…
  Gotchano outcome reports yetopenai-apichat-completionsgpt-5.42026-03-05