Moebius 0.2B image inpainting model ported to browser via WebGPU

Jul 10, 2026

Simon Willison ported the Moebius 0.2B lightweight image inpainting model to run in the browser using WebGPU, removing the need for PyTorch and CUDA. The demo is available at simonw.github.io/moebius-web/. The project was completed as a side task while waiting for an AI coding agent to finish a larger refactor.

Why it matters: This shows that efficient AI models can be made accessible directly in the browser, lowering hardware barriers and broadening access to AI image editing tools.

Full story at: Simon Willison's Weblog ↗