Google Chrome downloads 4GB AI model file without explicit user notification
Updated
Updated · Tom's Guide · May 5
Google Chrome downloads 4GB AI model file without explicit user notification
9 articles · Updated · Tom's Guide · May 5
The file, reportedly called weights.bin, appears tied to Gemini Nano and has been found in Chrome folders such as OptGuideOnDeviceModel on some users' computers.
It supports local writing, summarisation, scam detection and autofill features, but users may not see a clear prompt explaining the multi-gigabyte storage impact when those tools are enabled.
Deleting the file may disable related AI functions and it can return unless settings or experimental flags are changed, reflecting a wider shift toward on-device AI with privacy benefits and storage costs.
What are the hidden environmental and legal costs of Google's silent 4GB AI download for Chrome?
Is surrendering device control the price we must pay for the future of private, on-device AI?