Set up Groundmark

Two quick steps. Everything runs on this computer, so there’s no account, no server, and nothing to pay.

  1. 1

    Reading the pages Google cites

    To check a sentence, Groundmark opens the links Google attached to it, the same as clicking them yourself. It only does this on Google search pages, and it opens pages without your cookies, so sites never see your logged-in accounts.

  2. 2

    On-device AI

    Verdicts come from Gemini Nano, the language model built into Chrome. It runs on your computer, so the sentences you check never leave it. Chrome downloads and updates the model itself, and every site or extension that uses Chrome’s built-in AI shares the same copy.

    Checking this computer…

    How verdicts are made

    When the model is used, every sentence gets a quick lite verdict first, and the model’s verdict replaces it as it finishes.

    Model
    Gemini Nano, built into Chrome. It’s the only model Chrome offers extensions, so there’s nothing to choose.
    Size
    About 4 GB on disk. Chrome shows the exact size and version on its on-device AI page.
    Stored in
    Chrome’s profile folder, in OptGuideOnDeviceModel
    Details
What the on-device AI needs

Chrome 138 or later on Windows 10 or 11, macOS 13 or later, Linux, or a Chromebook Plus. At least 22 GB of free disk space, and either a GPU with more than 4 GB of memory or 16 GB of RAM with 4 or more CPU cores. Chrome removes the model if free space drops below about 10 GB. If this computer can’t run it, Groundmark still works in lite mode, which matches words and figures instead of reading meaning, and labels every result as a lite check.