World Labs Marble

Marble is World Labs' commercial multimodal world model: it lifts a text prompt, image(s), video, panorama, or coarse 3D blocking into a persistent, downloadable 3D environment you can navigate, edit, expand, and export. World Labs was co-founded by Fei-Fei Li; Marble reached general availability on 2025-11-12 and a programmatic World API was announced 2026-01-21. (Documented; verified 2026-07-10.)

The defining property, and the thing that separates Marble from most "generative video" or interactive world models: the world is materialized as persistent 3D geometry (Gaussian splats and/or meshes) that you own as a file, rather than hallucinated frame-by-frame as you walk. That makes it usable as a production asset, not just a demo you watch. (Documented — worldlabs.ai blog; verified 2026-07-10.)

When to use this skill

Use it when the deliverable is a 3D space: