Fei-Fei Li's World Labs debuts Marble, its first world model, which lets users turn prompts, photos, and other media into editable 3D environments, after a beta (Rebecca Bellan/TechCrunch)

World Labs, founded by AI pioneer Fei-Fei Li, has officially launched Marble, its inaugural world model product, on November 12, 2025. Marble enables users to transform prompts, photos, and various media into editable 3D environments, marking a notable step in the evolution of interactive digital content. The product's release follows a beta phase, indicating its readiness for commercial use. This development is significant as it showcases the growing capabilities of AI in creating immersive experiences, potentially reshaping how users interact with digital environments and enhancing creativity in various fields.