How to delete Chrome's weights.bin file and disable Gemini Nano

Key Points:

• Google Chrome’s "weights.bin" file, linked to on-device Gemini Nano AI features, has raised concerns due to its forced download and storage use, though it benefits user privacy.
• Google introduced an easy toggle in Chrome settings (Settings > System > Disable "On-device AI") to disable these AI features and delete the file, but this option is not yet available to all users.
• For users without the toggle, disabling related Chrome flags (#optimization-guide-on-device-model and #prompt-api-for-gemini-nano) via chrome://flags and manually deleting the "OptGuideOnDeviceModel" folder from the user profile directory can stop the file from downloading.
• Users should note that Chrome updates might reset these settings and redownload the AI model, requiring them to repeat the disabling and deletion process unless advanced registry edits are applied.
• Disabling the on-device AI features will stop related functionalities in Chrome, so users must weigh the trade-off between privacy, storage space, and feature availability.