Enhanced memory rolling out to all Plus and Pro users (including the EU). The new memory features are available in the EEA (EU + UK), Switzerland, Norway, Iceland, or Liechtenstein. These features areOFF by defaultand must be enabled inSettings > Personalization > Reference  Chat  History.
Plan differences
•Saved  memoriesandChat historyare offered only to Plus and Pro accounts.• Free‑tier users have access toSaved  memoriesonly.
Opt‑in reminders
• Outside the European regions listed above, all Plus and Pro accounts that have memory enabled will receive the upgrade automatically.• If you previously opted out of memory, ChatGPT will not reference past conversations unless you opt back in.SeeMemory FAQ.