What are the main differences between GPT-5 pro and standard GPT-5?
Pro is an extended reasoning version for more difficult tasks, focused on answer quality and completeness rather than merely changing writing style. It is more worthwhile for complex scientific analysis, mathematical derivations, or programming arguments; for routine tasks, start with standard GPT-5 and decide whether to use Pro based on the actual results delivered.
Which endpoint should I use to call GPT-5 pro?
Both endpoints can use model: "gpt-5-pro". Responses submits tasks through input, while Chat Completions organizes conversations through messages. Existing applications can continue using their corresponding data structures; when processing responses, note that the returned objects differ, and do not mix request fields and parsing methods.
How can I have GPT-5 pro analyze images?
Combine text and image_url in the message content of Chat Completions, and clearly state what you want analyzed. For chart tasks, it is best to provide units, context, and areas of focus; for screenshot tasks, provide the expected behavior. The model delivers textual understanding and recommendations and should not be used as a drawing feature.
Should I set the reasoning level to the highest?
GPT-5 pro is itself an extended reasoning model, so you should not treat every level in shared parameters as an available option for it. Start with a basic request, clearly specify task conditions and delivery requirements, then adjust according to the controls that actually apply; level names also cannot guarantee that an answer is correct.
Can GPT-5 pro directly fix and run code?
It can analyze code, propose changes, and suggest tests, but submitting a question once does not mean the code has run in your environment. When execution is needed, have the application connect to controlled tools or have a developer run tests, then submit the logs and results to the model to continue confirming whether the fix is effective.