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OpenAI is rolling out a rebuilt memory system for ChatGPT, called Dreaming, that changes how the assistant remembers you. Instead of just storing facts as you mention them, Dreaming runs a background process that synthesizes memory over time and keeps it current.

## How ChatGPT Dreaming works

The standout behavior is that memories age. If you tell ChatGPT “I’m going to Singapore in July,” Dreaming will later revise that to “went to Singapore in July 2026” once the trip has passed, rather than holding a stale fact forever. Everything it retains shows up on a reviewable memory summary page, where you can see the highlights of what ChatGPT knows about you, edit it, and set rules for which topics it should raise and when.

## Why it matters

Memory has been one of the weakest parts of consumer chatbots — useful until it quietly goes out of date. A system that updates itself and exposes a clear, editable summary is a real step toward personalization you can trust. It’s live for U.S. Plus and Pro users now, with paid accounts getting double the capacity, and an efficiency gain that cut serving compute about 5x is bringing it to free users next.