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What to do first
- Check availability. Open the assistant’s settings and look for Memory, Personalization, or a similarly named control. Availability may depend on the product, account type, platform, region, or workplace administrator.
- Enable the feature you want. Some assistants offer a switch for saved details and a separate setting for using past chats. Read the descriptions shown in your account before turning either on.
- State a useful, lasting preference plainly. For example: “Remember that I prefer concise answers with metric measurements.” You can also state relevant dietary needs or a preferred response format. A request is not proof that the product saved it, so check its memory controls or summary.
- Review and correct it. Look for saved details or ask the assistant what it remembers, then edit or delete anything inaccurate or unwanted using the controls available.
Memory is a convenience, not a guarantee that every detail will carry over. OpenAI says, “Memory does not retain every detail from every conversation.” Other assistants may use different sources and support different chat modes.
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How to set up memory in ChatGPT
Enable and inspect the available controls
In ChatGPT, go to Settings > Personalization > Memory. Inspect the controls actually shown in your account. Depending on your experience, they may include Memory, saved memories, reference to chat history, a memory summary, or memory management. OpenAI says availability can vary by plan, region, platform, and workspace settings.
Know what ChatGPT may use
Saved memories are details you ask ChatGPT to remember or that it saves as useful context. Reference to chat history can draw on relevant information from earlier conversations, but it is not a complete record; the information ChatGPT considers useful can change. Custom instructions are a separate way to tell ChatGPT what it should know about you and how you want it to respond.
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After asking ChatGPT to remember a preference, check the memory summary or management controls to see whether it appears. Correct an inaccurate detail or use the available forget or delete controls. If you want a conversation not to create or update memories, use a Temporary Chat. Before starting one, choose whether it may use existing memories; saving a Temporary Chat converts it to a regular chat.
How to set up personalization in Gemini
Check whether your account qualifies
Google documents Gemini personalization from past chats, connected Google apps, and preferences for how Gemini should respond. These features are not available to everyone. The cited Google guidance requires a personal Google Account; work, school, and supervised accounts are excluded. For personalization based on past Gemini chats, Google also requires users to be at least 18 and to have Keep Activity enabled.
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Use the current personalization settings
Open Gemini’s current Personal Intelligence or personalization settings to find the controls available to you. Google’s supported-surface list excludes some experiences, including Gems and Live chats, and supported features can change. Turn the relevant memory or personalization setting on, then state the preference you want Gemini to use and check the available settings to verify it.
Google says past chats can be found or deleted through Gemini Apps Activity. Deleting a chat may take a short time to stop affecting personalization, and deleting chats alone may not remove information available through a connected app.
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Why an assistant may forget—or remember incorrectly
- The setting is off or unavailable. Confirm that you are signed into the intended account and that the feature is enabled and supported for that account.
- You stated the preference only once in a chat. Ask explicitly for a stable preference to be remembered, then inspect the product’s memory controls rather than assuming it was stored.
- You are using an unsupported mode or surface. Memory may not apply in every conversation type; Gemini, for example, excludes some surfaces from past-chat personalization.
- The product uses chat history rather than a fixed saved detail. Chat-history personalization may select relevant context rather than preserve every statement, and what it uses can change.
- The stored detail is wrong or outdated. Correct or delete it in the memory controls where available, then check connected apps or other sources if the assistant may be drawing from them.
How to stop an assistant from using or keeping a detail
Turning off personalization, deleting a conversation, and deleting a separately saved memory can be different actions. Check which control does what before relying on one action to remove information.
In ChatGPT, deleting the conversation where a detail appeared does not necessarily delete a separate saved memory. OpenAI’s guidance for full removal is to delete the memory and the chat where it was first shared, and remove the information from other relevant sources such as files or connected apps. Deletion updates may take time to propagate.
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In Gemini, use the relevant memory settings and Gemini Apps Activity controls. Google warns that a deleted chat may take a short time to stop influencing personalization and that connected-app information may remain available through the connection.
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Privacy considerations
Only save details you are comfortable having used to personalize future responses. OpenAI notes that sensitive information may appear in memory if you share it. Review the product’s controls and data-handling information before entering sensitive personal, health, financial, or work details; disabling use of a feature may not be the same as deleting stored information.
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