Chrome’s On-Device AI Is Installing Without Your Consent — Here’s How to Stop It

If you use Google Chrome, a quiet change may have already landed on your machine. Recent reports from Decrypt, Yahoo Tech, and other outlets reveal that Chrome is silently downloading a roughly 4GB AI model—likely Gemini Nano—onto users’ computers. The model is intended for on‑device AI features, but the installation happens without a clear consent prompt. Even worse, if you delete the model, Chrome quietly puts it back.

As reported by Decrypt, Google has also removed its earlier privacy commitment that stated on‑device AI would be opt‑in or at least transparent. This raises real concerns about user control and the boundaries between helpful features and unwanted software.

What’s Happening

Starting around early May 2026, many Chrome users on desktop (Windows, macOS, Linux) found a new folder inside Chrome’s user data directory. The folder contains a language model weighing around 4GB. Chrome downloads it automatically during a background update, with no pop‑up asking for permission. Users who noticed and deleted the folder report that Chrome re‑downloads it on the next launch—or soon after.

The feature appears to be tied to on‑device AI capabilities, such as generating text summaries or suggesting replies without sending data to Google’s servers. In principle, that’s a privacy advantage. But the way it’s being rolled out contradicts Google’s earlier public stance.

The Broken Promise

Google had previously published a support page or FAQ that promised on‑device AI features would require explicit user opt‑in. That page has now been edited or removed. A cached version from earlier this year stated, “You will be asked before any on‑device AI model is downloaded.” The current documentation no longer contains that assurance.

This isn’t a minor change. If a company removes a privacy promise after users have already trusted its products, it damages the trust that makes cloud‑connected browsers work. And because the model is large—4GB on a typical hard drive—it can slow down slower machines or fill up limited storage without warning.

Why It Matters

Four gigabytes is a significant chunk of disk space. For users with small SSDs or older laptops, this can be a real problem. More importantly, the lack of consent sets a worrying precedent. If Chrome can install a 4GB AI model without asking, what else might it add in the future? On‑device AI features can still collect usage data (like which features you use), and the line between “private” local processing and data collection can blur.

Some users might welcome the AI features, but they should be able to choose—not discover them after the fact.

How to Check If the Model Is on Your Computer

The model is stored in Chrome’s user data folder. The exact path depends on your operating system:

  • Windows: C:\Users\[Your Username]\AppData\Local\Google\Chrome\User Data\OnDeviceAI\
  • macOS: ~/Library/Application Support/Google/Chrome/OnDeviceAI/
  • Linux: ~/.config/google-chrome/OnDeviceAI/

Look for a folder named something like gemini_nano or a large file (several GB) with a .model or .bin extension. You can check the folder size in your file manager.

How to Remove It (and Try to Keep It Off)

Deleting the folder may work temporarily, but as many users reported, Chrome will re‑download it. To prevent that, you can try the following steps. None are guaranteed—Google could change the behavior at any time—but they are the current best options:

  1. Disable Chrome’s automatic updates – If Chrome never updates, it won’t fetch the model again. This has security trade‑offs, so consider it carefully. On Windows, you can stop the Google Update service. On macOS, uncheck “Automatically update Chrome” in the About Chrome window. On Linux, you may need to remove the update repository.

  2. Use a Chrome flag – Some users have found a flag called chrome://flags/#on-device-ai. Setting it to “Disabled” might stop the download, but this flag may not be permanent. Check if it exists after a full restart.

  3. Apply enterprise policies – If you’re comfortable with registry edits (Windows) or a configuration file, you can set a policy to block on‑device AI downloads. Google provides documentation for IT admins, but it’s not user‑friendly.

  4. Switch to a browser that doesn’t do this – For now, Microsoft Edge (also Chromium‑based) and Brave have not been reported to silently install large AI models. Firefox is a more private alternative and does not include this behavior.

The Bigger Picture

This incident highlights a growing tension: browser makers want to add AI features to stay competitive, but users often prefer control over what runs on their machines. The fact that Google retracted its privacy promise suggests the company may have decided the opt‑in model slowed adoption. That may be true for their business goals, but it’s a poor trade‑off for user autonomy.

The tech press—especially Decrypt and Yahoo Tech—has covered this story thoroughly, and public reaction has been strongly negative. If you feel the same, now is a good time to review your browser settings and decide whether Chrome still fits your privacy standards.

What You Can Do Right Now

  • Open Chrome, type chrome://version in the address bar, and note your profile path. Use that path to find the OnDeviceAI folder.
  • If the folder exists and is large, delete it. Then either disable updates or watch for its return.
  • Consider switching to Firefox or another browser that respects your choice.

The most important takeaway: you should never have to fight your own browser to keep unwanted software off your computer. Chrome’s move is a step in the wrong direction, and it’s worth paying attention to how the company responds in the coming weeks.