Chrome AI features could use up 4GB of storage
▼ Summary
– Chrome may automatically download a 4GB AI model file (weights.bin) to system folders when certain Gemini AI features are enabled, reducing available storage.
– The weights.bin file belongs to Google’s Gemini Nano AI model, which runs locally on the device to power features like scam detection and writing assistance.
– Users can check for the file in Chrome’s OptGuideOnDeviceModel directory, but simply deleting it won’t work if AI features remain enabled.
– To permanently remove the file and prevent re-download, users must go to Settings > System and toggle off the On-Device AI option.
– Google’s storage requirements for Gemini Nano are not clearly communicated at the point of enabling features, leading to user confusion.
If you’ve noticed your computer’s available storage inexplicably shrinking, a hidden 4GB file inside Google Chrome might be the culprit. The browser is automatically downloading a large on-device AI model to system folders when certain features are enabled, and many users are only discovering this after seeing their free space vanish.
The file, named weights.bin, is linked to Google’s Gemini Nano AI model, which powers Chrome tools like scam detection, writing assistance, autofill, and suggestion features. Because Gemini Nano runs locally on your device rather than pulling data from the cloud, it stores its training parameters directly on your hard drive. This approach offers privacy advantages, but it also consumes significant storage,especially problematic since users aren’t given a clear heads-up about the file’s size.
If you’ve enabled any Gemini AI features in Chrome, the 4GB file has likely already been downloaded. You can confirm this by navigating to your Chrome data folder and checking the OptGuideOnDeviceModel directory for the weights.bin file.
Simply deleting the file won’t solve the problem. As long as AI features remain active, Chrome will re-download it. To permanently free up space, head to Settings > System and toggle off the On-Device AI option. That disables the features and prevents the file from being reinstalled.
Google notes that “Gemini Nano’s exact size may vary as the browser updates the model,” but this detail is buried in a lengthy support guide rather than shown when users enable AI tools. If the company had made the storage requirements more obvious,or offered a cloud-based alternative for Chrome’s AI features,this confusion could have been avoided. We have reached out to Google for comment.
(Source: The Verge)
