ChatGPT 51 Free AI mini apps

ChatGPT-5.1 is the latest frontier-grade model, offering stronger general-purpose reasoning. Chat with the most advanced AI to explore ideas, solve problems, and learn faster.

OpenAI's GPT-5.1 High is built to respond faster to users in a variety of situations with high reasoning adaptive reasoning, and smarter tone control. Chat with the most advanced AI to explore ideas, solve problems, and learn faster.