World Labs, founded by renowned AI expert Fei-Fei Li, has officially launched its first commercial product — the public beta version of Marble3D world model. This innovative tool supports generating complete, navigable 3D virtual worlds directly from text prompts, single images, multiple images, videos, or rough 3D layouts. Users can not only interactively edit in real-time but also easily export Gaussian splats (Gaussian splatters), triangle meshes, or video formats.

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Following a limited beta test two months ago, this public beta marks World Labs' elegant transformation from a lab concept to a practical tool. The startup, valued at over $1.25 billion, is redefining the boundaries of AI-generated content with its "large world model."

The Core Breakthroughs of Marble: Multimodal Input, One-Click Creation of Immersive 3D Worlds

Marble's charm lies in its multimodal generation capabilities. Users can generate large-scale, stylistically diverse 3D environments simply by entering a simple description or uploading media. The generation process usually takes about 10 minutes, and the output results have clear geometric structures and strong consistency, supporting real-time exploration (such as mouse navigation). Key highlights include:

Flexible Inputs and Instant Generation: From a single text prompt (e.g., "future cityscape") or image expansion to a complete world; multi-image fusion can combine environments, and video input captures dynamic elements, ensuring the output remains persistent and navigable.

Interactive Editing and Expansion: It includes an experimental 3D editor called Chisel. Users can first sketch out a rough spatial layout (walls, rooms, or terrain) and then inject visual styles using text prompts. This "structure-separated style" design is similar to the combination of HTML and CSS, avoiding the limitations of pure text editing. It supports one-click expansion of existing worlds or seamless integration of multiple scenes to build large virtual spaces.

Multi-format Export, Cross-platform Applications: After generation, users can directly download Gaussian splats (for efficient rendering), triangle meshes (suitable for modeling software), or enhanced videos (adding details, motion, and cleaning edges). This makes Marble an ideal asset for game development, visual effects (VFX), and virtual reality (VR) projects.

World Labs emphasizes that Marble is not a one-time generation, but a "persistent" world model that simulates physical realism, reducing deformation and inconsistency issues during the generation process. The public beta version already integrates the Marble Labs workspace, offering case studies and documentation to help creators explore workflows.

Industry Impact: 3D Path vs Video Path, Which Will Lead AI Content Generation?

This public beta has positioned World Labs as a standout in the "world model" race, directly competing with Google DeepMind's Genie (still in research preview) and emerging startups such as Decart and Odyssey.

Experts point out that Marble's focus on 3D fills the gap of current AI being limited to 2D text/images, pushing the transition from "reading and writing" to "perceiving and constructing." Potential applications include robot training simulations (generating real environment data) and film production (rapid prototyping of scenes). Interestingly, this tool may reshape the video data generation ecosystem. Users can use Marble to export high-quality video sequences from 3D worlds, combined with AI enhancements (like adding motion trajectories), efficiently creating training datasets. This approach offers greater spatial depth than purely video-based methods (such as Sora-style generation), suitable for scenarios requiring physical consistency.

In the future, as models evolve, the 3D path may prevail — but the video path still has advantages in immediacy. A co-founder of World Labs said this is the first step in "spatial intelligence," and the next-generation models will empower humans and AI agents to interact within virtual worlds. Conclusion: The AI space revolution has begun, and the 3D playground for creators is here. The Marble public beta not only ignited enthusiasm for AI-generated 3D, but also opened infinite creative doors for developers. The free version provides basic generation, while paid plans (starting at $20/month for the standard plan) unlock more quotas and commercial rights.

Experience address: https://marble.worldlabs.ai/worlds