ChatGPT's Latest Model Will Supposedly Give Less Annoying Answers

OpenAI is making GPT-5.5 Instant ChatGPT’s new default model.

The update focuses on clearer, less cluttered replies and fewer hallucinations, especially on high-stakes topics.

It also deepens personalization by using past chats, files, Gmail, and new memory controls.

GPT-5.3 Instant is being phased out, but paid users can keep using it for three months.