GPT-5.4 is out now on ChatGPT (where it goes by the name GPT-5.4 Thinking) as well as on the OpenAI API and OpenAI’s coding ...
OpenAI's new GPT-5.4 clobbers humans on pro-level work in tests - by 83% ...
Its disclosure of Grok use follows Treasury’s statement that the department was testing the controversial chatbot.