# How to delete Perplexity history: one thread, many or all > Delete Perplexity history from the History page: one session, several, or all of them. Also how to clear memories, delete a Project and remove uploaded files. https://www.kortex-notebooklm.com/tutorials/how-to-delete-perplexity-history 1. [Tutorials](/tutorials) 2. How to delete Perplexity history: one thread, many or all # How to delete Perplexity history: one thread, many or all 3 minutes 7 steps Updated November 10, 2026 ## Quick answer Go to perplexity.ai/library, your History page. Click the three dots beside a session and choose Delete. To delete all, click the three dots at the top right and choose Delete all sessions. Deleting can't be undone. Perplexity now calls threads sessions, and memories are cleared separately in Settings. ## Watch it first How to delete Perplexity history: one thread, many or all Read the transcript Here's how to delete your Perplexity history: one session, several, or all of them. Perplexity used to call these threads. Now they're sessions. ai slash library. That's your History page, with every session you made while signed in. To delete one session, click the three dots beside it and choose Delete. Perplexity asks you to confirm. To delete several, click Select on the History page, pick the sessions, then delete them. To delete everything, click the three dots at the top right of the History page, then Delete all sessions. This can't be undone. Memories are cleared separately. Open Settings, then Memory, and click Manage memories. Delete one with the trash icon, or use Clear all. To delete a Project, open it, click the three dots next to its title, and select Delete. To remove an uploaded file, delete its session. Want a copy first? Kortex can save your Perplexity chats on your computer, while a Perplexity tab is open. A chat you delete on Perplexity stays in your Kortex Library. The full tutorial has every step, and the fixes. ## What you need - A Perplexity account signed in on perplexity.ai - A decision on whether you want a copy first, because a deleted session can't be recovered ## On this page 1. [Open your History page](#step-1) 2. [Delete one session](#step-2) 3. [Delete several sessions](#step-3) 4. [Delete all sessions](#step-4) 5. [Clear what Perplexity remembers](#step-5) 6. [Delete a Project or an uploaded file](#step-6) 7. [Optional: keep a copy first](#step-7) 8. [If it doesn’t work](#trouble) 9. [Questions](#faq) 1. ## Open your History page Go to perplexity.ai/library. Every session you made while signed in is listed here. Perplexity used to call them threads and now calls them sessions. You can use the search bar to find one. 2. ## Delete one session Click the three dots (**⋯**) beside the session and choose **Delete**. You can also open the session, click its more options icon and select **Delete**. Perplexity asks you to confirm. 3. ## Delete several sessions On the History page, click **Select** to pick several sessions, then delete them. Use the Type and Sorting options to find the ones you want. 4. ## Delete all sessions Click the three dots (**⋯**) at the top right of the History page and select **Delete all sessions**. This action cannot be undone. 5. ## Clear what Perplexity remembers Deleting a session also stops it from shaping future answers. To clear memories too, open **Settings**, then **Memory**, and click **Manage memories**. Delete one memory with the trash icon, or use **Clear all**. Turning Memory off does not clear existing memories. 6. ## Delete a Project or an uploaded file To delete a Project, open it, click the three dots next to the title and select **Delete**, then confirm. Files you upload are kept for 30 days by default. To delete an upload, delete the whole session it belongs to. 7. ## Optional: keep a copy first Kortex can save your Perplexity chats on your computer, but only while a Perplexity tab is open, so open Perplexity first. A chat you delete on Perplexity stays in your Kortex Library. Open it there to read, search or download it as Markdown or PDF. [![The Saving your chats sheet in the Kortex side panel: a main switch, then ChatGPT, Claude, Gemini, Perplexity and Grok, each with its saved count, a switch and a delete link.](/images/library/saving-sites.webp)](/images/library/saving-sites.webp) Each site says what saving is doing, with its own switch. ## If it doesn’t work I deleted a session by mistake Perplexity says a deleted session can't be retrieved, and it adds confirmation prompts to prevent accidents. If Kortex had saved the chat, the copy in your Kortex Library is still there. Perplexity still gives answers based on my old searches Memory and search history are separate settings. Turn off Use search history in Settings, then Memory, and delete the memories you don't want in Manage memories. Deleting a session also removes it from influencing answers. Some sessions disappeared on their own Temporary sessions expire. Sessions made while logged out expire after 14 days, and incognito sessions expire after 24 hours. Sessions that use a file or connector can also be temporary. ## Questions people ask Something we missed? [Ask us](#contact). ### How do I delete my Perplexity search history? Open perplexity.ai/library, click the three dots beside a session and choose Delete. To remove everything, use the three dots at the top right and select Delete all sessions. ### Can I get a deleted Perplexity session back? No. Once a session is deleted it cannot be retrieved. To be safe, keep a copy first. ### Does Incognito mode keep my history? Incognito sessions expire after 24 hours, and memory and previous searches are always off in incognito mode. Questions asked there are not kept or used in memory. ### Will deleting on Perplexity delete the copy in Kortex? No. A chat you delete on its site stays in your Kortex Library. To remove a site's chats from the Library, use Delete saved chats on that site's row in the side panel's Saving your chats sheet. ## Sources - [Self-Serve Data Deletion (Perplexity Help Center)](https://www.perplexity.ai/help-center/en/articles/11564562-self-serve-data-deletion) , checked November 10, 2026 - [What is a Session? (Perplexity Help Center)](https://www.perplexity.ai/help-center/en/articles/10354769-what-is-a-thread) , checked November 10, 2026 - [Memory (Perplexity Help Center)](https://www.perplexity.ai/help-center/en/articles/10968016-memory) , checked November 10, 2026 ## Keep going [Chat Library Keep your AI chats on your computer and search them, next to your YouTube videos and notebooks.](/features#organize) [Kortex docs The full reference for this feature, with every option.](/docs/chat-library) ### More tutorials - [Where is Gemini chat history? How to find your past chats](/tutorials/how-to-find-gemini-chat-history) - [How to search Gemini chat history and find an old chat](/tutorials/how-to-search-gemini-chats) - [ChatGPT custom instructions: how to set them up](/tutorials/how-to-set-custom-instructions-in-chatgpt) - [How to share a ChatGPT conversation with a link](/tutorials/how-to-share-a-chatgpt-conversation) [All tutorials](/tutorials) ## Do it on your own notebooks. Install the Kortex extension and follow these steps on a notebook you already have. [Add to Chrome](https://chromewebstore.google.com/detail/kortex/hdapplggdhndkblofffknpmnnnnbncbn) 100,000+ users, rated 4.5 on the Chrome Web Store.