Marble turns an image or text prompt into a 3D environment that a user can explore from different viewpoints. World Labs’September 2025 beta announcement describes persistent scene geometry and exportable Gaussian splats, a representation used to render the generated world in other projects. Users can also compose individual generations into larger environments. This makes the output useful as a navigable setting for visual work, beyond the original input view. The announced model was designed around environments, with isolated subjects such as people or animals outside its main focus.
