Gpt-5.4 ignores reasoning_effort="none" when max_completion_tokens is used

Foxalabs:

max_output_tokens

Hi, no, it doesn’t work. max_output_tokens returns “BadRequestError 400 Unknown parameter: ‘max_output_tokens’.”

If you meant the old max_tokens parameter, it seems to be no longer supported with this model, as it returns:

BadRequestError 400 Unsupported parameter: ‘max_tokens’ is not supported with this model. Use ‘max_completion_tokens’ instead.