Captain chat automatically selects a reasoning effort for OpenAI GPT-5.6 Sol and Luna. When Captain caller tools are available, requests for both gpt-5.6-sol and gpt-5.6-luna are sent to /v1/chat/completions with function tools and reasoning_effort, producing:
400 Bad Request: Function tools with reasoning_effort are not supported
for gpt-5.6-sol in /v1/chat/completions. To use function tools, use
/v1/responses or set reasoning_effort to "none".
DeepSeek works through the same chat UI, and OpenAI requests stop triggering this rejection when reasoning effort is none.
Captain chat automatically selects a reasoning effort for OpenAI GPT-5.6 Sol and Luna. When Captain caller tools are available, requests for both gpt-5.6-sol and gpt-5.6-luna are sent to /v1/chat/completions with function tools and reasoning_effort, producing:
DeepSeek works through the same chat UI, and OpenAI requests stop triggering this rejection when reasoning effort is none.