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 ...
GPT-5.4 expands the context window to 1 million tokens; the larger limit supports longer coding and research sessions.
Gukesh Dommaraju’s emotional apology during the Prague Masters highlighted a broader dip in form among India’s top players, ...