GPT-5.5 Instant: smarter, clearer, and more personalized

OpenAI Blog ·

OpenAI deploys GPT-5.5 Instant as ChatGPT's new default model, with improved accuracy, reduced hallucinations, and new personalization controls.

Categories: Model Releases, Products to Try

Excerpt

GPT-5.5 Instant updates ChatGPT’s default model with smarter, more accurate answers, reduced hallucinations, and improved personalization controls.

Read at source: https://openai.com/index/gpt-5-5-instant