Google Adds 4GB Gemini Nano AI Model to Chrome for On-Device Processing
Privacy advocate Alexander Hanff discovered that Chrome installed a 4GB weights.bin file for on-device Gemini Nano without permission. The browser automatically re-downloads the file if deleted and no longer displays it to users. Google stated that nothing material has changed and all data processing remains on-device.
ForbesBin file on users’ devices to power on-device Gemini Nano. bin file installation. Chrome did not ask permission before installing the file.
Bin file to users. bin file, Chrome re-downloads it. ” The sentence promising that the model runs locally without sending user data to Google’s servers has been deleted from the Settings UI.
The on-device AI toggle has been moved out of the System block and given a dedicated section. The edit to the On-device AI message occurred in early April. Hanff has now flagged the change, which was first disclosed on Reddit.
He warned that the implications are serious and asked whether the previous text was inaccurate, whether the architecture has changed or whether the wording was withdrawn on legal advice. Google responded to Alexander Hanff’s viral 4GB AI file report. The company stated that nothing material has changed and that Gemini Nano in Chrome processes all data on-device.
Alexander Hanff dismissed Google’s response to the 4GB AI file report as gaslighting. The secretive nature of the change has prompted questions for regulators, according to Forbes reported.
Key Facts
Story Timeline
4 events- 2026-04-01
Google edits the On-device AI message in Chrome settings, removing the local processing assurance and relocating the toggle.
2 sourcesForbes · Google - 2026-05-10
Alexander Hanff publicly reports the silent 4GB weights.bin installation and the settings changes.
1 sourceForbes - 2026-05-10
Google responds that nothing material has changed and Gemini Nano processes all data on-device.
2 sourcesForbes · Google - 2026-05-10
Alexander Hanff dismisses Google's response as gaslighting.
1 sourceForbes
Potential Impact
- 01
Potential erosion of user trust in Chrome's privacy claims given its dominant market position
- 02
Possible user backlash or calls for greater transparency in AI feature rollouts
- 03
Increased regulatory scrutiny over browser-based on-device AI deployments
Transparency Panel
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