Google Chrome: AI Takes Over Your Storage with 4GB

Google Chrome, the most widely used web browser in the world, may be taking up more storage space on your computer than you anticipated. The culprit is a large file related to the browser's artificial intelligence (AI) features, which installs automatically in certain cases.

Users have recently noticed an unexplained decrease in their storage space. Upon investigation, it turns out that Chrome downloads a file named weights.bin, weighing 4 GB, into its system directory when certain AI features are enabled.

This file is associated with Google's Gemini Nano AI model. This model powers several AI tools integrated into Chrome, such as fraud detection, writing assistance, autofill, and suggestions. Designed to operate locally, the model requires its training parameters to be stored directly on the device, rather than using cloud-based models. This has privacy benefits but can pose a problem if your storage space is limited.

If you have enabled certain Gemini AI features in Chrome, it is likely that the 4 GB file is already present on your system. To check this, you can explore your Chrome data folders and inspect the OptGuideOnDeviceModel directory for the weights.bin file.

However, deleting this file will not permanently resolve the issue. If the AI features remain enabled, Chrome may download it again. To prevent this, it is necessary to disable the On-Device AI option in Chrome's system settings.

Google has clarified that "the exact size of Gemini Nano may vary as the browser updates the model." However, this information is buried in a detailed guide on AI features, rather than being clearly indicated when activating it in Chrome. More transparent communication regarding storage requirements, or an option to use cloud-based models, could have prevented this confusion. Google has been contacted for a comment on this situation.