Perplexity Memory: What to Check and What to Save Yourself
Check what Perplexity can remember, which controls apply and how personal recall differs from a shared project record that another assistant can use.
Updated 6 min read
Perplexity Memory can use information from your earlier threads and interests to personalize later answers, but you should check your controls and the source of any important recollection. It is different from a shared record of approved project decisions and unfinished work. fenbs keeps that explicit work record for supported outside assistants; Perplexity users can manually save the project facts they want to preserve there.
For research, remembering your preferred answer format can be convenient. Remembering an old assumption as though it were today’s approved direction can create extra work. The aim is to know what kind of context produced the answer and which facts still need a person to confirm them.
What should you check in your account first?
Open your account settings and look for Memory or personalization controls. Perplexity’s Memory announcement (opens in a new tab) says you can view, delete and turn off saved memories in settings. It also says memories and search history are disabled in Incognito mode. Check the actual controls you see rather than assuming a remembered answer means every form of memory is enabled.
- Confirm the account you are using. A personal account and an organization account may have different settings and available features.
- Check whether this is a regular or Incognito session. A test in the wrong mode can tell you little about your normal recall.
- Review any visible saved entries. Find the particular fact you need instead of relying on a general statement that memory is on.
- Inspect search-history controls separately from individual saved memories. Read the descriptions beside each control before changing it.
- If your organization manages the account, ask whether its settings restrict memory. Avoid changing several controls at once while investigating.
For managed accounts, Perplexity’s Enterprise Memory documentation (opens in a new tab) says administrators can enable or disable some or all memory functionality. It also says individuals can still view, delete or turn off saved memories when memory is enabled for the organization. A missing option may therefore need an administrator’s explanation.
How are saved memories different from old threads?
An old thread is a record of a conversation. A saved memory is selected information that may influence another answer. The context in the conversation you are actively using is different again: a follow-up such as “compare the second option” depends on what appeared immediately before it.
| What you need | What to inspect | What does not prove it |
|---|---|---|
| An earlier discussion | The original thread and the actual wording. | A new answer that loosely resembles the discussion. |
| A saved preference | The saved entry and whether it is still correct. | The fact that you once mentioned the preference. |
| A research conclusion | The cited source and your checked interpretation. | The assistant repeating its own earlier conclusion. |
| An approved project choice | A record of the choice and who approved it. | A suggestion appearing in a conversation. |
| The next action | Current task progress and outstanding checks. | An old summary that says the project was nearly done. |
Keep the original evidence when a recollection matters. If an answer says your team prefers a certain supplier, ask whether that is a personal preference, an old research subject or an approved selection. Those three facts can sound similar while requiring different next steps.
Will changing the model preserve the same context?
Perplexity’s Memory announcement describes memory as working across its models and search modes. That describes behavior within Perplexity; it does not mean a separate AI app receives your account’s memories. Treat changing the model inside a product and moving the project to a different product as separate transitions.
Also separate the availability of context from the quality of an answer. Two models may interpret the same project information differently. Test the facts that matter, ask for the source and review the result. Our ChatGPT project memory guide covers a different app’s scope; it should not be used as a description of Perplexity’s controls.
Is Computer’s Brain the same as the Memory switch?
Perplexity documents a separate system called Brain for Computer. Its official Brain description (opens in a new tab) explains that it builds working context from your activity and links entries to their source. The same page says Brain has its own toggle in Computer settings, independent of Search History in Memory. Availability and access are described on that page.
If you use Computer, inspect those controls too. Do not assume switching off one feature has changed every other source of project context. The useful check is concrete: what can this session read, what can it save, and where can you review or remove the saved information?
A source link helps you verify a recollection, but it does not make a tentative thought an approved decision. Read the original material before acting on a claimed change of direction. Ask an authorized person when the record does not clearly establish who chose it.
What project facts should you save deliberately?
Say you are researching packaging for a small US design studio. You explored three materials, rejected one after checking the supplier’s specifications and still need a sample before choosing. A useful project record preserves that exact position. “Interested in recyclable packaging” is helpful personal context, but it does not explain which option remains untested.
- The question: what the research is meant to decide and what is outside its scope.
- The evidence: links to the primary sources you actually checked, with a short note on what they support.
- The human decision: what was approved, who chose it and the reason.
- The uncertainty: what is inferred, disputed or waiting for a test.
- The next step: the specific action that will resolve the remaining question.
Keep the summary small enough for someone to check against the sources. The broader guide to using AI at work covers review habits; research collected in notebooks has a separate work-project workflow. In fenbs, Decisions and rules and the project’s current tasks keep this selected context together through its AI context workflow.
Preserve the checked conclusion and the open question
Record the material choice a person approved in fenbs and leave the sample check as an unfinished task. A supported connected assistant can read both before continuing. Perplexity research can inform that record, but you choose and save the project facts manually.
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How can you test recall before relying on it?
Choose one harmless, known fact and ask a new session for it without putting the answer in the question. Request its source or ask it to state that it cannot verify the fact. Then compare the response with the saved entry or original discussion. Repeat after correcting a stale entry to see whether the correction is reflected.
Do not use this as a test of whether every word of your history is remembered. Test whether the exact context needed for the next action is available and accurate. The Perplexity MCP guide addresses research tools used from outside assistants; that connection should not be treated as proof that your personal memories travel with the results.
How to do this with fenbs
- Create a free account, free for one person with no credit card, and add the project you are researching.
- Manually add the verified research summary as project context. Include source links, the question being answered and any limits on what the evidence shows.
- Record approved choices in Decisions and rules. Add remaining research and checks as tasks, keeping suggestions separate from a person’s decision.
- Choose a supported outside assistant from the integration guides. Ask it to read the project context before work and save progress, including the next step, before stopping.
fenbs does not connect directly to Perplexity or import its threads and saved memories. If you only want personalized research inside Perplexity, its own controls may meet your need. Use fenbs when selected work must remain explicit across supported assistants, and explore the AI memory topic for other context patterns.