GPT 5.6 models not supported due to reasoning_effort param

[DanielLaberge]

gpt-5.6-luna doesn't support Function tools with reasoning_effort, and GPT 5.6 models require temperature to be set to 1.

error: {
  message: "Function tools with reasoning_effort are not supported for gpt-5.6-luna in /v1/chat/completions. To use function tools, use /v1/responses or set reasoning_effort to 'none'.",
  type: "invalid_request_error",
  param: "reasoning_effort",
  code: null
},
code: null,
param: "reasoning_effort",
type: "invalid_request_error"