Chrome Is Installing a 4GB AI Model Without Your OK – Here’s How to Find and Delete It

You might already have a four-gigabyte artificial intelligence model sitting on your hard drive, downloaded by Chrome without any clear notice or consent. Recent reports confirm that Google has removed its own privacy promise for on-device AI in Chrome, and the browser is now quietly installing a large language model that comes back even after you delete it. If you care about what software does on your machine, this is worth understanding.

What happened

In early May 2026, multiple news outlets reported that Chrome deleted a previously public privacy commitment stating that on-device AI features would only be used with user permission. At the same time, the browser began silently downloading a 4GB AI model to Windows, macOS, and Chrome OS machines. The model is believed to be used for features like smart compose, tab grouping, or other on-device AI functions. The key issue is that the download happens in the background, and if you manually remove the model, Chrome may reinstall it on the next update—or even sooner.

Google has not issued a public statement explaining the removal of the privacy promise, but the change has been documented by sources such as Decrypt and Yahoo Tech.

Why this matters

On-device AI is not inherently bad. Running models locally can improve speed and avoid sending data to cloud servers. But the way Chrome is rolling this out raises several concerns:

  • Lack of transparency: Users were not told about the 4GB download before it happened. The privacy promise that gave some assurance has been removed.
  • Loss of control: If deleting the model does not permanently prevent it from returning, then users essentially have no say in whether this software runs on their machine.
  • Data collection risks: Even local AI can collect usage data—like which text you type or which pages you visit—to improve its predictions. Google has not clearly stated what data, if any, is sent back.
  • Disk space: 4GB is not trivial, especially on devices with limited storage.

This is another example of a company changing the rules after users have already relied on prior promises. For privacy-conscious people, it should be a wake-up call.

How to check if the AI model is on your computer

The model is stored in Chrome’s user data directory. Locations vary by operating system.

  • Windows: Look in %LOCALAPPDATA%\Google\Chrome\User Data\OnDeviceAI
  • macOS: ~/Library/Application Support/Google/Chrome/ followed by a subfolder named OnDeviceAI or similar.
  • Chrome OS: /home/chronos/user/ or within the user data directory.

The folder may contain multiple files, with a combined size around 4GB. You can check this by navigating to those locations in your file manager or using a terminal command.

Alternatively, open Chrome’s internal settings by typing chrome://settings/on-device-ai in the address bar. If you see a toggle for “Enable on-device AI,” it may be turned on by default. Some users report that the toggle alone does not prevent the download.

How to remove the model (and the tricky part)

To delete the model:

  1. Close Chrome completely.
  2. Navigate to the folder mentioned above.
  3. Delete the entire OnDeviceAI folder.
  4. Restart Chrome.

After deletion, check the folder again. If it reappears within a few days or after a Chrome update, that confirms the auto-reinstallation behavior reported by users and journalists.

If you want to prevent future downloads, you can try:

  • Disabling automatic updates for Chrome (not recommended for security reasons, but possible via policy settings).
  • Using a tool like chromium or ungoogled-chromium that strips out these components.
  • Switching to a browser that does not force such downloads.

At the moment, there is no official Google setting to permanently block the model. The company has not commented on whether opt-out will be provided.

What you can do to protect your privacy

If this troubles you, you have options:

  • Switch browsers: Mozilla Firefox and Brave Browser do not install large AI models without explicit consent. Both offer strong privacy defaults and are fully functional for everyday browsing.
  • Use Chrome only when necessary: Keep Chrome for sites that require it, but set a different browser as your default.
  • Review Chrome’s permissions: Go to chrome://settings/content and disable any AI-related permissions. Also check chrome://flags for AI flags and disable them. Note that these settings may not stop the underlying download.
  • Stay informed: Watch for updates from Google. If enough users complain, they may add a clear opt-out. For now, assume the model will remain unless you take more drastic measures.

Sources and further reading

  • 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)

These articles provide screenshots and detailed instructions. They confirm the removal of the privacy promise and the persistent reinstallation behavior. As of this writing, Google has not issued a public response.

The bottom line: Chrome is now a browser that installs large software components without asking. Whether that matters to you depends on how much control you want over your own computer. If it does matter, the steps above can help you take some control back—at least for now.