§ models · storyline
GPT-5.5 Instant: smarter, clearer, and more personalized
OpenAI updates ChatGPT's default model to GPT-5.5 Instant, offering improved accuracy, reduced hallucinations, and enhanced personalization controls.
GPT-5.5 Instant updates ChatGPT’s default model with smarter, more accurate answers, reduced hallucinations, and improved personalization controls.
§ sources2 publications · timeline below
§ how this story moved
- primary — OpenAI — Blog publishes the launch post.
- OpenAI — Blog picks up coverage.