Marble AI is a multimodal world model from World Labs that generates high‑fidelity, persistent 3D worlds from simple inputs such as text prompts, images, videos, or coarse 3D layouts. It focuses on spatial intelligence to infer coherent layouts, materials, and lighting, producing explorable scenes within minutes that can be interactively edited, expanded, and combined. The platform supports advanced AI‑native editing tools like targeted region editing and layout blocking, and can export to formats suitable for web, VR, AR, and major game engines using Gaussian splats and triangle meshes, making it useful for both rapid prototyping and professional 3D pipelines.[1][2][3][4][6]