Memory across conversations.

• Memory: ChatGPT's store of saved details about you, which it can draw on in later conversations. A project can switch to a memory kept only inside that project.

• memory: Claude keeps separate, categorised notes about you from your conversations and uses them later, in both chat and Cowork. You can edit or delete each one.

• Memory: Gemini learns from a user's past chats and uses that to personalise later answers. Users can ask whether past chats were used, and delete chats so Gemini stops using them.

Also at Gemini: Personal Intelligence

• Copilot Memory: Copilot remembers details about you and your work from Copilot Chat and other signals, and uses them to tailor its answers. You can view, delete or switch off saved memories.

• Brain: A memory system for Computer that builds a picture of your projects, people and files, so later requests can build on earlier work.
• Memory: Perplexity remembers details you share across separate conversations. It is always off in incognito mode.

Also at Perplexity: Comet memory

• Memory across chats: Grok remembers your preferences and past conversations across chats on grok.com.

Also at Grok: Personalize with Memoriesbeta

• Memory (Meta AI): Meta AI saves facts you share and reuses them in later chats, across apps linked in the same Accounts Center. You can view and delete them.
• memories (Muse): Muse keeps memories about you across conversations, which you can customise.

• Knowledge Base: The assistant saves facts about you and your work, both when asked and on its own, as browsable, editable pages. It recalls them in later chats when relevant.
• Memories: Le Chat's earlier memory of long-term facts and preferences across chats. It is migrating into Knowledge Base.