OpenAI Gives ChatGPT a Personality Makeover with GPT 5.1

OpenAI is releasing GPT-5.1. This upgrade aims to make its flagship model smarter and more enjoyable after the previous version failed to impress. The original GPT-5 launch was so underwhelming that it prompted partner Microsoft to explore models from competitor Anthropic. This new version directly addresses user experience. It introduces two specialized models, Instant and Thinking, designed for different tasks. OpenAI is also expanding its personality presets to include options like Quirky, Nerdy, and Cynical, moving beyond a "one-size-fits-all" approach. The move signals a clear response to recent criticism and a renewed focus on what users want from their AI.