How to Stop Google Gemini From Training on Your Chat History in the US

Google's Gemini can learn from your chats. If you use the free version of the Gemini app in the United States, your saved conversations may be used to train Google's AI models. This guide shows you exactly how to stop that from happening, delete the chats Google already has, and check what stays saved after you opt out.

The short answer: open the Gemini app, go to Settings, open Gemini Apps Activity, and turn it off. Then delete your past conversations in My Activity. The steps below walk through each part, including the settings that do not turn training off on their own.

What Google does with your Gemini chats

When Gemini Apps Activity is turned on, Google saves your Gemini app conversations in your Google account for up to 18 months. The company uses a sample of those saved conversations to improve its services, including training AI models, and human reviewers may look at some of them.

Turning the setting off stops Google from saving future conversations to your account and from using them for training. It does not erase conversations that are already saved, and Google may keep data for up to 72 hours after you change the setting for safety and abuse prevention.

Paid plans work differently. Google says it does not use data from Gemini in Workspace, Gemini Advanced under a paid plan, or the Gemini API for model training in the same way, but the steps in this guide still apply to the free Gemini app, which is what most people use.

How to turn off Gemini Apps Activity

This is the setting that controls training. Follow these steps on your phone or in a browser.

On the Gemini app, tap your profile picture, tap Settings, then tap Gemini Apps Activity. Switch the setting off and confirm when Gemini asks. In a browser, go to gemini.google.com, click Settings, then click Gemini Apps Activity, and turn it off.

After you switch it off, Gemini shows a confirmation. Check that the setting now reads Off before you leave the page. If you use Gemini on more than one device with the same Google account, the setting applies to the account, so you only need to change it once.

How to delete past Gemini chats

Turning the setting off does not delete your old conversations. Delete them separately.

In the Gemini app, open Settings, then Gemini Apps Activity, then tap Delete and choose a range, such as Last hour, Last day, or All time. You can also open My Activity at myactivity.google.com, filter by Gemini Apps, and delete entries one by one or in bulk.

For a full clean up, choose All time. Google says deleted activity is removed from your account, although it may keep limited data for up to 72 hours for safety reasons.

Settings that do not stop training by themselves

Several other settings look like privacy controls but do not replace turning off Gemini Apps Activity.

Deleting a single chat thread removes it from your history, but the conversation may still be saved in your account activity. Signing out of Gemini does not delete saved activity either. And using Incognito or guest mode in a browser stops the browser from saving history on your device, but it does not change what Google saves on its servers when you are signed in.

There is also a separate control for Gemini in Google Workspace apps such as Gmail and Docs. If you use Gemini inside those apps, check the settings in each app as well.

How to check what Google still has

After you turn the setting off and delete your history, verify the change. Open Gemini Apps Activity again and confirm it reads Off. Then open My Activity, filter by Gemini Apps, and confirm the list is empty for the range you deleted.

Check back after a few days, especially if you keep using Gemini. If you ever turn the setting back on, even briefly, new conversations will start being saved again.

Frequently Asked Questions

Does Google Gemini train on my chat history by default?

In the free Gemini app in the United States, yes, when Gemini Apps Activity is on. Google saves your conversations and may use a sample of them, reviewed by humans, to train its AI models.

Will turning off Gemini Apps Activity delete my old chats?

No. You must delete past conversations separately in Gemini Apps Activity or in My Activity. Turning the setting off only stops future conversations from being saved and used for training.

Can I still use Gemini after turning off Apps Activity?

Yes. Gemini still works, but it will not remember past conversations in the same way, and features that rely on your chat history may be limited.