World Labs is an AI company co-founded by the computer-vision pioneer Fei-Fei Li, dedicated to what it calls spatial intelligence: AI that perceives, reasons about, and acts within three-dimensional space. The company emerged from stealth in 2024 with the explicit goal of building large world models, treating 3D as the universal interface for representing physical space, in contrast to the text-centric focus of large language models.
The company’s public work centers on generating and interacting with navigable 3D worlds. Its products and research previews have included Marble, a frontier world model launched publicly in 2025, RTFM (a real-time frame model), a World API for generating 3D worlds from text and images, and Spark, a framework for streaming 3D content. The throughline is generating persistent, geometrically consistent environments that a user or an agent can move through, edit, and simulate, rather than producing flat images or video clips alone.
World Labs matters because it represents a distinct bet on the future of AI: that the next major capability is not better language but grounded understanding of physical space, the kind of intelligence a robot, a designer, or a game engine actually needs. For a general reader, it is a leading example of the spatial-intelligence movement, with potential impact across robotics, design, simulation, gaming, and any field where machines must understand and generate the 3D world.