“Prompts” to store a settings profile are deprecated and will be shut off before the end of the year;
GPT-5.6 family has new Responses API fields and values throughout, such as reasoning mode setting for “pro” or your setting for effort being “max”
It is somewhat reasonable to expect that after pulling the plug on prompt feature and letting this machine wind down, that there is not going to be programming effort made in storing new fields that you can see and set in a backend database object for prompts.
Issue with your shape and your attempt to store it in a non-updated prompts:
{
“error”: {
“message”: “Unsupported value: ‘max’ is not supported with the ‘gpt-5.6-sol’ model. Supported values are: ‘none’, ‘low’, ‘medium’, ‘high’, and ‘xhigh’.”,
“type”: “invalid_request_error”,
“param”: “reasoning.effort”,
“code”: “unsupported_value”
}
}
You could also see this as
a backend configuration error where OpenAI could fix the validation of field names.
a web app presentation error in not surfacing the underlying status 400 error and its message
It is an issue similar to prompts not working for weeks upon gpt-5.2 release because the feature was trying to set a top_p internally that was not supported. But that separate example is showing the afterthought “prompts” already was when it was still over-promoted.
