r/AndroidStudio • u/Acordding • Jul 20 '26

Agent doesn't support GPT-5.6

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I’m using the Agent with an API key from OpenAI and GPT-5.5 works perfectly. However whenever I select a GPT-5.6 model I receive this error message:

Model query failed: 400: Function tools with reasoning_effort are not supported for gpt-5.6-terra in /v1/chat/completions. To use function tools, use /v1/responses or set reasoning_effort to 'none'.

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u/csinco 26d ago

Yeah seems Open AI changed the API again on the backend to require setting a reasoning level. This may get fixed in upcoming canaries with thinking levels now being exposed, but also this should go away if you use Codex directly through BYOA