
Chrome secretly installs a 4GB on-device AI model—here’s how to reclaim disk space
Chrome has been quietly downloading a 4GB on-device AI model file named weights.bin to power Gemini Nano features, often after Chrome 148.0.7778.97, without user consent. To check on macOS, go to ~/Library/Application Support/Google/Chrome/Default/OptGuideOnDeviceModel/weights.bin and verify its size. To remove it permanently, disable On-device AI in Chrome Settings > System (this also stops future downloads); if the toggle isn’t present yet, use chrome://flags to disable AI-related flags and manually delete weights.bin. If you’re uncomfortable with this, consider switching to another browser.


