Chrome’s AI features may be hogging 4GB of your computer storage

The Verge / 5/6/2026

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Reports indicate that Google Chrome’s on-device AI features can automatically download a large model file (weights.bin), which may be saved into system folders.
In some cases, the weights.bin file is about 4GB, explaining sudden and unexpected drops in available storage on users’ devices.
The file is tied to Google’s Gemini Nano model, which underpins Chrome AI tools such as scam detection, writing assistance, autofill, and suggestion features.
The article highlights a potential storage-impact issue for users who enable certain Chrome AI functions, suggesting they may need to monitor or manage browser-related storage usage.

Google Chrome may be taking up more of your storage than expected thanks to a large on-device AI model file that, in some cases, is being automatically downloaded to the browser's system folders. Users who have noticed unexplained drops in their available desktop device storage are now discovering that Chrome is installing a 4GB weights.bin file inside their browser directory when certain AI features are enabled.

The weights.bin file in question is connected to Google's Gemini Nano AI model, which powers Chrome AI tools like scam detection, writing assistance, autofill, and suggestion features. As the Gemini Nano model is designed to run lo …

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