OpenAI expands ChatGPT memory with a new dreaming system

OpenAI announced a new memory system for ChatGPT on June 4, 2026, designed to make the assistant more useful by improving freshness, continuity, and relevance. The company says the update helps ChatGPT synthesize memories more effectively across long time periods and large numbers of users. The system builds on earlier memory features that let ChatGPT remember saved details and later reference chat history in the background. OpenAI says the new approach is more scalable and better at keeping information current, reducing stale or incorrect memories over time. According to the company, the update is rolling out first to Plus and Pro users in the US, with broader availability planned for additional countries and for Free and Go users in the coming weeks. OpenAI also says the new memory summary page will let users review, edit, and manage what ChatGPT remembers.