ChatGPT can remember things about users across conversations — like their preferences, job, and communication style — and use that information to give more relevant responses over time. This feature, called Memory, launched in early 2024. Users can view, edit, or delete what ChatGPT has stored about them.

Memory works in two ways: users can explicitly ask ChatGPT to remember specific facts ("remember that I'm a vegetarian"), and ChatGPT can also passively build a profile by drawing insights from past conversations. The passive "Chat History" memory — which gathers information without explicit user instruction — is available to Plus and Pro subscribers; free users receive only the explicit saved memories feature. In April 2025, OpenAI introduced Memory with Search, which uses stored user preferences to personalize web search queries made through ChatGPT. Memory can be disabled entirely in Settings under Personalization, and individual memories can be deleted.