World Labs, the AI startup co-founded by Fei-Fei Li, has officially launched its first commercial product, Marble, a sophisticated generative platform designed to accelerate the development of 3D world models by prioritizing user creative control.
“One of our main themes for Marble going forward is creative control,” Johnson said. “There should always be a quick pathway to generate something, but you should be able to dive even deeper and get a lot of control over the things that you’re generating. You don’t want the machine to just take the wheel and pull all that creativity away from you.”
Advanced Editing and Flexibility
Marble improves upon its beta version by offering enhanced input flexibility. While the beta was limited to single-image inputs, the full launch allows users to upload multiple images or short clips to provide comprehensive spatial context, enabling the model to generate more accurate digital twins.
A standout feature is “Chisel,” an experimental 3D editor that separates structure from style. Users can block out coarse layouts—such as walls or planes—and apply text prompts to dictate visual aesthetics, functioning similarly to how HTML and CSS interact in web development. Unlike traditional text-to-3D tools, Chisel allows for direct manipulation of objects, meaning users can physically grab and move 3D elements within the generated space.
The platform also introduces world expansion capabilities, where users can prompt the model to add detail to specific regions of a generated environment. For larger projects, a “composer mode” allows users to stitch multiple generated worlds together.
The path to spatial intelligence
Marble is available in four subscription tiers, ranging from a Free version to a $95/month Max plan that includes full commercial rights and increased generation quotas. World Labs envisions the platform primarily serving the gaming, film VFX, and VR industries.
While some segments of the game development community remain skeptical of generative AI—citing concerns over job displacement, IP theft, and quality control—World Labs positions Marble as an asset-generation tool rather than a replacement for entire production pipelines. By allowing developers to generate ambient environments that can be imported into engines like Unity or Unreal, the company hopes to streamline workflows.
For VFX artists, Marble offers a solution to the camera inconsistency and lack of control prevalent in current AI video generators. Furthermore, while not a primary focus, the technology shows promise for robotics by providing simulated training environments in a field currently lacking massive, diverse datasets.
Ultimately, Fei-Fei Li views Marble as a foundational step toward “spatial intelligence.” By teaching machines to understand and build within three-dimensional spaces, Li believes this technology could eventually extend its impact beyond creative industries into fields like science and medicine. “Our dreams of truly intelligent machines will not be complete without spatial intelligence,” she noted in a recent manifesto.
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