ChatGPT Gets a Massive Upgrade: GPT-5.1 Makes It Smarter and More Human
On November 12, 2025, OpenAI upgraded its ChatGPT-5 AI model with the “warmer” and “more intelligent” GPT-5.1 Instant model, as well as an easier-to-understand GPT-5.1 Thinking model. ChatGPT-5.1: Overview The…