Chrome hides a four GB AI file without warning you

Published on May 09, 2026 | Translated from Spanish

Google Chrome could be using up to 4 GB extra of your hard drive without you noticing. All because of a file called weights.bin, part of the Gemini Nano model, which is automatically downloaded when you activate AI features like scam detection or autocomplete. The curious thing is that you don't receive a clear notification about its size, leaving you with less space than you expected.

Chrome icon occupies hard drive with hidden 4GB file, label 'weights.bin' and AI symbol.

How to locate and manage the weights.bin file 🗂️

To check if the file is on your system, look in the OptGuideOnDeviceModel folder within Chrome's data directories. On Windows, it's usually in AppData/Local/Google/Chrome/User Data/OptGuideOnDeviceModel. On macOS, it's in ~/Library/Application Support/Google/Chrome/OptGuideOnDeviceModel. Deleting it directly is useless: Chrome will download it again if the AI features are still enabled. The only real solution is to disable those options from the browser settings.

Google, thanks for the digital dead weight 💾

So, while you browse happily, Chrome gives you an AI model that weighs like an elephant and doesn't ask for permission. It's like a friend leaving a suitcase full of bricks at your house and saying it's to help you. Sure, it helps... to fill up your disk. The worst part is that when you delete it, it comes back like bad digital karma. Google, if you're going to include AI, at least warn before your browser turns into a storage gym.