OpenAI implemented measures to reduce reverse engineering, following the Anthropic lead.

They disabled the temperature and seed parameters. There's still logprobs, so they aren't as closed up as Anthropic yet.

I might write about an article of the history of LLM APIs, I used to think the ChatGPT was going to be a de facto standard like intel's 80866 mutated into x86, but it seems to be a bit more nuanced and diverse than that, vibecoding introduced so much complexity because the vibecoding product itself became vibecoded so the enshittification was accelerated, many such cases.