Where you're still signed in, and how to end it

I can tell you my phone is signed in to my AI tools. I could not tell you about the old laptop, the office computer, or the browser I used once on a trip. Claude, ChatGPT, Copilot, and Gemini each give you a way to see where your account is signed in and end any of those sessions. It takes a couple of minutes per tool, and I’d do it a few times a year. Details are as of October 2026.

Claude: active sessions

Claude lists every browser and device you’re signed in on, and you can end any of them from there.

1. Click your profile icon in the bottom-left corner.
2. Go to Settings, then Account.
3. Scroll down to Active sessions. Each row shows the device and browser, an approximate location, and when it was last used.
4. For a row you don’t recognize, open the three-dot menu, choose Terminate, and confirm. That device has to log in again.

When to reach for it: reach for it after you lend, sell, or replace a computer, or when you spot a device you don’t know. The location is a guess based on IP address, so an odd city alone doesn’t prove a problem. Ending every session at once is covered in a separate Claude help article.

Source: Claude Help Center: Managing your active sessions

ChatGPT: active sessions

ChatGPT has a Security page that lists your signed-in sessions and lets you log out of one or all of them.

1. Go to Settings, then Security, then Active sessions.
2. Read each row. It can show the device or browser, an approximate location, and the sign-in date and time.
3. To end one, select Log out on that row and confirm.
4. To end everything, select Log out all, then confirm with Log out of all devices. That also ends your current session and can take up to 30 minutes to take effect.

When to reach for it: reach for it after you’ve used a shared or public computer. It doesn’t show third-party app sessions, and it isn’t available if your account signs in through your organization’s single sign-on.

Source: OpenAI Help Center: Managing active sessions in ChatGPT

Copilot: recent activity on your Microsoft account

Personal Copilot signs in with a Microsoft account, so the check happens on that account’s Recent activity page. This is a Microsoft account feature, not a Copilot-only one.

1. Go to account.live.com/Activity and sign in with the Microsoft account you use for Copilot.
2. Look through the sign-ins and account changes from the last 30 days.
3. Expand any entry to see where it happened and how the account was accessed, such as a web browser or a phone.
4. If something looks wrong, expand it and choose This wasn’t me (in the Unusual activity section) or Secure your account. Microsoft will ask you to change your password and update your security info.

When to reach for it: reach for it when you get an unusual sign-in email, but go to your account directly instead of clicking the link in the email. The page shows mainly significant events, not everything, and the map can be off on mobile networks. This is the personal account page, not Microsoft 365 Copilot at work.

Source: Microsoft Support: What is the Recent activity page?

Gemini: see devices with account access

Gemini signs in with your Google Account, so the list lives in your Google Account settings, not inside the Gemini app. Like Copilot, this is an account feature, not a Gemini-only one.

1. Go to myaccount.google.com and open Security & sign-in.
2. In the Your devices panel, select Manage all devices.
3. Select a device to see its details. The list covers devices and sessions signed in now or within the last few weeks, with an approximate location and time.
4. To end one, select the device, then choose Sign out.

When to reach for it: reach for it when you use Gemini on a phone, a laptop, and a shared computer and can’t remember which. The time shown is the last contact with Google, which can be background syncing, and one device can show several entries. An unfamiliar entry isn’t always a problem, but if you truly don’t recognize it, Google says to secure your account right away.

Source: Google Account Help: See devices with account access

Try this

Pick the AI tool you use most and open its sign-in list right now. Count how many devices you recognize, then end any you don’t. Do the next tool next week so it doesn’t turn into a chore. And the usual reminder from me: AI can sound sure and still be wrong, so check anything about money, health, or safety against a real source, and keep private details out of any tool you don’t fully trust.

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