Memory now updates automatically; Plus/Pro get 2x capacity

Upgraded memory so ChatGPT can better keep context up to date and reduce stale or contradictory saved memories. Memories are now updated automatically, with ChatGPT tracking important details to build on shared context. Users can review memories through sources or memory summary. For Plus and Pro users, ChatGPT can now remember more useful context with twice as much memory capacity. Rolling out to Plus and Pro users in the US today, with expansion to Free and Go plans and additional countries over the next few weeks. Legacy saved memories system available via Settings > Memory > Saved memories.