World Labs – Generate persistent, navigable, and controllable 3D worlds (www.worldlabs.ai)

World Labs today launched Marble, a limited-access beta (marble.worldlabs.ai) for a model that generates persistent, navigable, and controllable 3D worlds from image or text prompts. Unlike transient or view-limited outputs, Marble produces larger, stylistically diverse scenes with cleaner geometry that you can freely explore in a browser with no time limits, and compose multiple generations into coherent, larger environments. The system focuses on environments (not people/pets) and lets users export outputs as Gaussian splats (and common formats like spz, ply) for downstream use. Technically, Marble emphasizes persistent 3D geometry and efficient web/VR rendering: exports integrate with World Labs’ open-source Spark renderer which plugs Gaussian splats into Three.js, enabling interactive experiences across desktops, mobiles, and VR headsets. That combination — stylistic consistency, composability, and performant splat rendering — addresses limitations of depth maps and point clouds and unlocks workflows for filmmakers, game designers, and VR creators who need free-viewpoint navigation, large-scene composition, and editable persistent worlds. Marble is early-stage, with API plans hinted, but its ability to produce coherent, exportable 3D stages could significantly accelerate prototyping and production pipelines in spatial AI and content creation.