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Li Fei‑Fei’s World Labs Debuts Marble Preview for Persistent, Navigable 3D Worlds

The company emphasizes free browser roaming with export to Gaussian splats via Spark and Three.js.

Overview

  • Marble is live in a beta preview, with access available through a public waitlist.
  • World Labs says a single image or text prompt can generate durable 3D environments that stay consistent during free navigation without time limits.
  • Generated worlds support export as Gaussian splats and integration into web experiences using the open Spark renderer and Three.js across desktop, mobile, and VR.
  • The current model focuses on environments rather than isolated humans or animals, with coherent styles enabling larger worlds built from stitched scenes.
  • Early testimonials tout major workflow speedups, though these quotes come from company materials and broader independent validation is still pending.