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% ...
New ChatGPT 5.4 Model Is 'Built for Agents.' Will It Lure Back Claude Converts?