Say you borrowed your grandson's laptop to check something on ChatGPT last month, and you just realized you never signed out. Worth a look before it nags at you. Here's how to check devices logged into ChatGPT: open Settings → Security → Active sessions, and it lists every device currently signed in.
Start with Active sessions
This is the first place to check whenever you've used ChatGPT on a shared computer, gotten a new phone, or just have a nagging feeling. OpenAI's own help page walks through the exact path, since menus shift now and then.
The list shows the device type, roughly where it signed in from, and when. Don't treat the location as an exact address — VPNs, cell networks, and travel can all make it look further off than it really is. Look at the device and timing together instead.
Ask yourself a few quick questions first
Before signing anything out, take a breath and think it through:
- Did I use ChatGPT at work, a library, or someone else's computer recently?
- Did I just switch phones or clear my browser?
- Does the timing line up with something I actually did?
If the answer is still no after that, go ahead and act — you don't need to solve the mystery first. This is the practical step worth doing today, not just when something feels wrong.
If you're also switching phones around the same time, our Google Account security checklist is worth doing alongside this.
Sign out one device, or sign out everywhere
For a single unfamiliar entry, use that session's own sign-out button — your trusted devices stay logged in. If you can't account for several sessions, or think someone else might know your password, choose sign out of all devices instead. Just make sure you can still get back in through email before you do.
One boundary worth knowing: this only manages your ChatGPT sessions. If you sign in through a work or school account, that organization's IT settings may control part of this instead.
If you think someone actually got in
Change your ChatGPT password right after signing out the unfamiliar session, using a device you trust. Turn on multi-factor authentication if you haven't already, and never enter a verification code unless you started that sign-in yourself.
It's also worth checking the email account tied to ChatGPT — if someone can reset that inbox, a new ChatGPT password alone won't help much. Our Google Account security checklist covers exactly this kind of recovery-email review.
A tidy habit going forward
Skip saving your password on a shared computer, and sign out explicitly when you're done. It also helps to keep passwords and account numbers out of your ordinary ChatGPT prompts — our ChatGPT Voice action-plan guide shows how to plan things out without typing anything sensitive.
Make a small habit of glancing at Active sessions after a trip or a device change. Most of what you'll see is perfectly ordinary — but you'll spot the one thing that isn't, and know exactly what to do about it.
Continue with the full account check
Active sessions are the best first step, but they are only one part of account safety. Our ChatGPT account security and privacy checklist continues with Temporary Chat, data and advertising controls, connected apps, searchable history, and safer file uploads. Work through it once, then repeat the short session check after travel or a device change.
Official sources
- OpenAI Help Center: Managing active sessions in ChatGPT
- OpenAI Help Center: ChatGPT release notes