OpenAI recently began rolling out a new memory system called Dreaming, designed to help ChatGPT build a more useful understanding of who you are over time. Instead of relying primarily on facts you've explicitly asked it to remember, the new system synthesizes information from your past conversations and updates those memories automatically as your life changes.
The good news for users is that this feature is rolling out in stages. Dreaming reached ChatGPT Plus and Pro subscribers in the U.S. first, with free, Go and international users expected to follow over the coming weeks. So, depending on your plan and region, you may or may not see it yet.