Source: OpenAI is preparing to launch GPT-5.4, with an "extreme" reasoning mode and a 1M-token context window, matching past models but up from GPT-5.2's 400K (Stephanie Palazzolo/The Information)

Stephanie Palazzolo / The Information: Source: OpenAI is preparing to launch GPT-5.4, with an “extreme” reasoning mode and a 1M-token context window, matching past models but up from GPT-5.2's 400K  —  OpenAI's next GPT model is coming—and soon, according to a person with knowledge of it.