Marble Labs can build 3D worlds, a major step towards what the AI leadera calls ‘spatial intelligence.’ World Labs, the AI model developer cofounded by AI pioneer Fei-Fei Li, has released its 3D-space generating model, “Marble.” At the World Labs website, creators can now input text prompts, images, or videos of pieces of a real-world environment. Marble uses them to create full 3D environments, which can include interior spaces or expansive exterior ones.