A tiny image-editing AI now runs entirely inside your web browser

Moebius is a tiny AI model that does inpainting—erasing part of an image and filling the gap so seamlessly nothing seems missing—and it runs entirely in a web browser on your own device, with no data sent to any server. Simon Willison ported it to run locally using your machine's graphics chip, meaning no upload, no account, no cloud bill, and your images never leave your computer (

Moebius is small enough by modern standards that Willison was able to wrap it into something usable in a browser tab, with the help of a coding assistant—a small story-within-the-story about how quickly capable people can now turn research into working tools (, where every claim is checked against the primary source.