ChatGPT can now lock a single chat behind a PIN. Here is what that actually hides
OpenAI's Locked chats keeps a conversation out of your history, pinned chats and search. It is not end-to-end encryption, and a forgotten PIN deletes everything inside.
In this article
OpenAI began rolling out Locked chats on 20 October 2026. The feature hides chosen conversations from your regular chat history, pinned chats and normal ChatGPT search, and asks for a 4-digit account PIN, Face ID, Touch ID or your device unlock before it shows them. The company put it in the ChatGPT release notes and a dedicated help page; the rollout is gradual, so the option may not appear for you yet.
The intended use is narrower than a privacy overhaul. OpenAI describes it as a way to keep sensitive conversations out of view when you share a screen or hand someone your phone. In practice that covers a lot: medical questions, salary negotiations, a message you are drafting about a friend, or a surprise you are planning. Locked chats also stop those titles showing up when someone else scrolls your sidebar.
How to lock a chat
These are the documented steps, not a procedure we independently tested; interface details vary by platform and rollout.
- Open the conversation you want to hide.
- Open its more options menu (the three dots) and select Lock chat.
- Confirm Lock chat again.
- Create a 4-digit account PIN if you do not have one, or enter it when prompted.
The chat moves to Projects > Locked chats. You can open that area later, enter the PIN or use device authentication, and start new conversations from there. On iOS and Android you can switch on Face ID, Touch ID or device unlock in the account PIN settings. Device authentication is set up per device and does not replace the PIN.
Access is temporary by design. On web and desktop it applies to the tab or window where you entered the PIN and ends when you refresh or close it. On iOS and Android it ends about one minute after you leave the locked area or put the app in the background. A Lock now button ends it immediately.
What Locked chats does not do
This is the part worth reading before you trust it with anything serious. OpenAI says locking a chat does not:
- create end-to-end encryption or a separate encrypted vault,
- change how long OpenAI retains the conversation,
- change your Improve the model for everyone setting,
- remove anything ChatGPT remembered before you locked the chat,
- override your workspace's policies, safety rules or legal obligations.
So the lock controls who can see the chat on your screen. It does not change who can access the data behind it. In a work workspace, administrators cannot unlock your chats or reset your PIN, but Enterprise and Edu locked chats still appear in conversation logs available through the OpenAI Compliance Platform. And anyone who can open a locked chat can still copy its contents.
The memory split is the useful surprise
If Memory is on, locked chats get their own memory that is shared across conversations inside the locked area. New messages sent after locking can be remembered there, and that memory does not carry back into your regular chats. Regular memory can still be used inside locked chats, and locking does not erase what was already remembered. On balance that is a sensible split: the private thread learns from itself without leaking its details into the chat you use at work.
Nine conversation types cannot be locked
The Lock chat option is unavailable for temporary chats, archived chats, group chats, chats created from a shared link, chats with scheduled tasks, chats with meeting recordings, chats associated with background tasks, chats with responses saved as project sources, and chats in the earlier Health experience. Codex conversations cannot be locked, and the feature is not available on ChatGPT for Healthcare. If you lock a chat that came from a project, it leaves that project and stops using its instructions, files and memory.
The PIN reset is a delete button
This is the one warning to say out loud. Changing your PIN, with the current PIN in hand, keeps your locked chats. Resetting a forgotten PIN permanently deletes every locked chat, the memories stored only inside them and files protected only by that PIN. OpenAI says the deletion cannot be undone and support cannot recover the content. A workspace administrator cannot reset it for you either.
Before you rely on the feature, decide where you will keep the PIN. A password manager entry is more reliable than memory. If the chats matter, consider exporting anything you would hate to lose; the reset path is not a recovery flow.
What to do now
Check whether Lock chat appears in a conversation's three-dot menu. If it does, lock one genuinely sensitive thread and test the end of access: leave the tab or background the app, then confirm it asks again. Do not treat the lock as a replacement for deleting data you no longer want stored, and do not put passwords, card numbers or other secrets into a chat just because the title is hidden.
Locked chats are available across Free, Go, Plus, Pro, Business, Enterprise and Edu plans as the rollout reaches them. The feature is a useful screen-level privacy control, not a private vault. That distinction is the whole story.
Sources & further reading
OpenAI Help Center: Using locked chats in ChatGPT (updated 20 October 2026)
OpenAI Help Center: ChatGPT release notes, 20 October 2026
TechCrunch: ChatGPT now lets you lock your chats (20 October 2026)
Our articles help you explore AI and build practical skills. For a correction or a question, contact us. Contact


