OpenAI Launches GPT-5.1 with Enhanced Personalities Amidst Gemini 3.0 Delay
OpenAI has released GPT-5.1, an upgrade to GPT-5, featuring models that are warmer, more intelligent, and offer expanded personality options, aiming to make ChatGPT more engaging and customizable. The new models, GPT-5.1 Instant and GPT-5.1 Thinking, will be gradually rolled out, with enhanced personality presets and an experimental style fine-tuning feature. Despite high expectations, GPT-5's launch received mixed reviews, prompting OpenAI to reintroduce GPT-4 as an option, while competitors like Anthropic are advancing their own models.