OpenAI Rolls Out Enhanced Memory System for ChatGPT

OpenAI has announced a major overhaul of ChatGPT's memory functionality, introducing a sophisticated new system designed to better understand and retain user preferences and conversation history.

The centerpiece of this update is a feature called "Dreaming," which operates silently in the background to gather and process information from multiple conversations. Unlike the company's earlier "Saved Memories" feature introduced in April 2024—which required users to manually request that specific information be stored—the Dreaming system works automatically without explicit commands.

The previous approach had proven limiting. OpenAI found that manually saved memories often became outdated or less relevant to users' actual needs over time. The new system addresses this by continuously learning from ongoing interactions.

The redesigned memory architecture emphasizes efficiency and reduced computational demands. Users will now see a "memory summary" that they can review, edit, and expand at any time. The system also allows users to specify exactly when ChatGPT should draw upon stored preferences and information when formulating responses.

This new memory system integrates with the "Memory Sources" feature that OpenAI launched alongside its GPT-5.5 Instant model. This integration lets users see the specific information ChatGPT references when personalizing responses, with the ability to modify or remove data as needed.

The improvements enable ChatGPT to maintain context more effectively over extended periods. If a user previously mentioned an interest in photography and specified which camera they use, the assistant can later recommend compatible accessories or equipment without requiring the user to restate those details. Similarly, when planning a trip, ChatGPT can draw on prior travel-related discussions to offer suggestions tailored to the user's interests—such as recommending locations ideal for street photography within a proposed itinerary.

OpenAI has built in automatic review mechanisms to keep memories current. The system periodically evaluates stored information to prevent reliance on outdated details or treating past events as if they remain in the future.

The company is beginning deployment of the new memory system to Plus and Pro subscribers in the United States as of today, with availability expanding to additional countries in the coming weeks. Free account users will gain access to the Dreaming mechanism in the near future, though Plus and Pro subscribers will receive greater memory capacity and more granular customization options.