OpenAI just dropped GPT-5.1: faster, smarter, and warmer by design
On Wednesday, November 12, 2025, OpenAI unveiled GPT-5.1, a major mid-cycle upgrade to its flagship ChatGPT models. The update introduces two new variants — GPT-5.1 Instant and GPT-5.1 Thinking — both designed to make conversations faster, smarter, and more natural. According to OpenAI, GPT-5.1 is built to feel “warmer” and more human-like in tone, while also improving instruction-following and reasoning. The Instant model powers most everyday chats, offering a friendlier and more conversational style. The Thinking model, aimed at deeper reasoning tasks, adapts its “thinking time” based on complexity — responding quickly to simple questions and spending extra effort on hard ones. The rollout begins immediately for ChatGPT Plus, Pro, Go, and Business users, with Enterprise and Education accounts getting early access before […]
