OpenAI GPT-5.1 adds more personalities, loses inhibitions
GPT-5.1 introduces warmer, more conversational behavior, new persona and tone controls, and two variants (Instant and Thinking) available to paying subscribers.
OpenAI's GPT-5.1 makes ChatGPT 'warmer' and smarter - how its upgraded modes work now
GPT-5.1 adds GPT-5 Instant and GPT-5.1 Thinking plus personalization features and new personalities to make ChatGPT warmer, more conversational, and customizable.