On Android, in Gmail, in Docs, and across your Google account.
Gemini is not one switch. It arrives as several separate features attached to different Google products, and each has its own control in a different place — which is why searching for “turn off Gemini” sends you round in circles. Some parts switch off cleanly. Others can only be hidden, and come back when an app updates.
You went looking for the setting and either it wasn't where you expected, or it was and it didn't stick. That's the pattern across all of this — and it's why we test each one on a real device rather than repeating what a listicle said in March.
We work each of these out properly — on a real phone, a real laptop — and send the step-by-step to the list. One email a month, covering what changed and exactly how to switch it off.
Your email address, nothing else. One click to leave.
Gemini is not a single setting. It appears as separate features across Android, Gmail, Docs and Workspace, each with its own control in a different place. Some can be switched off permanently, others only hidden until the next update.
On Android, Gemini replaced Google Assistant on many devices. Reverting the assistant behaviour is a separate change from switching off Gemini features inside Gmail or Docs.
Google's AI Overviews — the summary above your search results — is the most-searched of the lot, and we've published the working method for it: how to turn off AI on Google →. Verified in a real browser, with the date on it.