WorldKit
Built at Meta Global AI Developer Hackathon · Oct 26, 2026 · Remote
WorldKit turns a phone video into a scaled, editable 3D model you can 3D print. 3D printing needs CAD skills most people don’t have. With WorldKit you film an object, or a whole desk, with a coin or card beside it for scale. Muse Spark finds the objects, SAM 3.1 segments them in every frame, and SAM 3D builds the meshes. You get a printable STL, with its scale estimated from the coin, and a 3D environment you can print as a diorama or one object at a time. An AI Edit agent changes the model from plain text: Muse Wonder picks a geometry tool, SAM 3.1 finds the part, and Muse Spark checks before and after. Every edit is verified and undoable. A phone web app uploads videos, and a laptop worker processes them.