GPT-5.4 doesn't seem to support other temperatures than 0? Not sure, check.

[johny-b]

Error: BadRequestError: Error code: 400 - {'error': {'message': "Unsupported value: 'temperature' does not support 0 with this model. Only the default (1) value is supported.", 'type': 'invalid_request_error', 'param': 'temperature', 'code': 'unsupported_value'}}