World Labs Launches Marble, First Commercial AI-Powered 3D World Model

World Labs’ New Commercial Offering

World Labs, the artificial‑intelligence startup co‑founded by AI pioneer Fei‑Fei Li, has moved beyond its stealth phase and beta testing to release Marble, a commercial world‑model product. Marble is presented through a freemium tier and three paid subscription levels, giving users the ability to generate 3D environments from a variety of inputs—including text prompts, photos, video clips, 3D layouts and panoramic images.

Features and Editing Tools

Unlike earlier demos that produced on‑the‑fly worlds, Marble creates persistent, downloadable 3D spaces that can be exported as Gaussian splats, meshes or video files. The platform introduces AI‑native editing tools and a hybrid 3D editor called “Chisel.” Chisel lets users block out coarse spatial structures—such as walls, boxes or planes—and then apply text prompts to guide visual style, effectively separating structure from appearance much like HTML and CSS.

Marble also supports world expansion, allowing users to request additional detail in specific regions of a generated scene. For larger projects, a “composer mode” enables the combination of multiple worlds into a single expansive environment.

Subscription Structure

The service is offered in four tiers. The Free tier provides four generations from text, image or panorama inputs. The Standard tier, priced at $20 per month, offers twelve generations plus multi‑image/video input and advanced editing. The Pro tier, at $35 per month, delivers twenty‑five generations, scene‑expansion capabilities and commercial usage rights. The Max tier, costing $95 per month, unlocks all features and seventy‑five generations.

Target Use Cases and Compatibility

World Labs positions Marble for use in gaming, visual effects (VFX) and virtual‑reality (VR) projects. Developers can generate background environments and assets that integrate with game engines such as Unity or Unreal Engine. In VFX, the 3D assets allow precise camera control, addressing inconsistencies found in AI‑generated video. Marble is already compatible with major VR headsets, including Apple Vision Pro and Meta Quest 3, enabling users to view generated worlds in immersive formats.

Beyond entertainment, the platform may aid robotics by providing simulated training environments, a domain where large‑scale training data is limited.

Leadership Comments and Market Position

Co‑founder and spokesperson Justin Johnson highlighted the emphasis on “creative control,” noting that Marble balances rapid generation with deep user‑driven customization. He described the product as a new category of model that will improve over time. By delivering a downloadable, editable world model, World Labs claims to be ahead of peers such as Decart, Odyssey and Google’s Genie, which remain in limited research previews or focus on non‑persistent world generation.

Future Outlook

Fei‑Fei Li has articulated a broader vision for spatial intelligence, suggesting that systems like Marble could eventually help machines achieve deeper understanding of three‑dimensional spaces, with potential impacts beyond gaming and robotics into science and medicine. The launch of Marble marks the first step toward that vision, establishing World Labs as a leading player in the emerging world‑model market.