GPT-5.4 expands the context window to 1 million tokens; the larger limit supports longer coding and research sessions.

OpenAI teases “5.4” as reports point to a 1M+ token context window and “extreme reasoning,” amid scrutiny over its Pentagon deal.

OpenAI launches GPT-5.4, calling it its most capable and efficient AI model yet, with AI agents, computer control, improved reasoning, and a 1M-token context.

As daylight saving time gets closer and Americans get ready for clocks to "spring forward" for 2026, the time change will affect most of the U.S. — but there are two states and several territories ...