Chrome Is Secretly Installing a 4GB AI Model—Here’s How to Stop It

If you use Google Chrome, there’s a good chance your browser has quietly downloaded a 4GB AI model onto your computer. And if you try to delete it, reports indicate it can come back on its own.

This isn’t a bug. It’s a feature Google has been rolling out for on-device AI tools—but the way it’s being handled has raised serious privacy concerns. Multiple news outlets have documented that Chrome no longer asks for permission before downloading the model, and Google has removed a previous privacy promise that suggested it would. Here’s what’s actually happening and what you can do about it.

What Happened

Starting in early 2026, Chrome began downloading a large AI model (around 4GB) to users’ machines. The model powers local AI features, such as smart text suggestions or image generation that runs entirely on your device. On the surface, that sounds fine—local processing can be more private than sending data to the cloud.

The problem is how Google has handled the installation. According to reports from Decrypt and Yahoo Tech, Chrome is downloading the model without a clear opt-in. Even worse, if a user deletes the model from their system, Chrome may redownload it during the next update or browser restart. Google has also revised its privacy policy, removing a line that previously promised the company would not run on-device AI unless users actively turned it on.

In other words, the model is now installed silently, and Google has walked back its own commitment to transparency.

Why It Matters

A 4GB download may not seem like a big deal on a fast internet connection, but it matters for several reasons.

  • Disk space: 4GB is significant for users with smaller SSDs or limited storage on laptops.
  • Bandwidth: For people on metered connections, an unexpected 4GB download can be costly.
  • Control: The core issue is that Chrome is making a substantial change to your computer without your informed consent. If you have no interest in on-device AI, you shouldn’t have to host a bulky model you never asked for.
  • Persistence: The fact that the model reinstalls itself after deletion undermines user autonomy. It suggests that even if you opt out through the right settings, the system may ignore your choice.

There’s also a broader concern about privacy promises. Google once stated clearly that on-device AI would be opt-in only. By removing that language, the company has signaled that promises can change without notice.

What You Can Do

If you want to stop Chrome from running or downloading the AI model, here are the steps that have been confirmed to work as of May 2026.

Check if the model is on your computer

On Windows, look in C:\Users\[YourUserName]\AppData\Local\Google\Chrome\User Data\OnDeviceAI. On macOS, check ~/Library/Application Support/Google/Chrome/OnDeviceAI. If the folder exists and contains large files, the model is installed.

Disable the AI feature in Chrome settings

  1. Open Chrome and type chrome://settings in the address bar.
  2. Scroll down to the “AI” or “Experimental AI” section (exact label may vary by version).
  3. Turn off any toggles for “On-Device AI” or “Local AI model.”
  4. Restart the browser.

Use chrome://flags to force disable

This method is more thorough but may be reset by future updates.

  1. Type chrome://flags in the address bar.
  2. Search for “on-device AI” or “local AI.”
  3. Set any related flags to Disabled.
  4. Restart Chrome.

Delete the model folder (if it exists)

After disabling the feature, you can delete the OnDeviceAI folder. If it reappears later, you may need to repeat the process or consider switching browsers.

What If It Keeps Coming Back?

Some users have reported that the model returns even after following the steps above. That’s because Chrome’s automatic update mechanism may re-enable the feature or re-download the model. In that case, the most reliable fix is to move to a browser that doesn’t bundle such behavior.

Google’s own policies may change again, so the steps above are not guaranteed to work forever.

Consider an Alternative Browser

If you value privacy and control, Chrome may no longer be the best tool for your needs. Several browsers offer a similar experience without the silent AI downloads:

  • Firefox – Runs on its own engine (Gecko) and has strong privacy protections built in. No on-device AI model is downloaded without your clear permission.
  • Brave – Chromium-based, so it supports Chrome extensions, but with aggressive privacy controls and no silent AI model downloads.
  • Vivaldi – Also Chromium-based, but highly customizable and transparent about what runs on your machine.

Switching browsers is straightforward. All major browsers let you import bookmarks, passwords, and settings from Chrome. If you rely on Google services, you can still access them in any browser.

The Bottom Line

Chrome is downloading a 4GB AI model onto millions of computers without clear consent. Google has removed the privacy promise that once limited this behavior, and the model can reappear after deletion. If you value control over what runs on your machine, you can disable the feature using Chrome’s settings or flags—but the most reliable solution is to use a browser that respects your choices.

Sources:

  • Decrypt: “Chrome Deletes Its Own Privacy Promise for Sneaky On-Device AI” (May 7, 2026)
  • Yahoo Tech: “Chrome Is Quietly Installing a 4GB AI Model on Your Computer—And Putting It Back If You Delete It” (May 6, 2026)
  • Additional coverage by Decrypt and other outlets confirming the same details.