I have looked through the API docs with various recommendations on how to setup API to match GPT 5 Thinking for example (eg setting reasoning to Medium or High). But I cant find how to match Pro model. In web UI, if you click on the model drop down you can see - Auto, Thinking, Instant, Pro.. Auto is just hybrid of Instant and Thinking. Which leaves 3 options.. Instant and Thinking seems to be clear - you set it via reasoning level. Any ideas if I can achieve GPT 5 Pro capabilities via API ?