Atlas record: https://www.aitimeline.dev/en/events/evt-0960/
Availability · November 12, 2025
Marble for everyone
On 12 November 2025 World Labs opened Marble to everyone: from text, images, video or a coarse 3D layout it creates a three-dimensional world that can be edited and exported.
Why it matters
A generated world became a file: it can be exported as Gaussian splats, meshes or video and taken into other software. An editorial assessment: the product is described by the company itself, and the sources hold no independent comparison with other world generators.
By the company’s post, Marble accepts text, one or several images, video or a coarse 3D layout; a world can be edited, a chosen region expanded, and several worlds composed. Chisel is an experimental mode: the user lays out coarse shapes or imported objects and a text prompt sets the style. Export: Gaussian splats (rendered in the browser by Spark, an open-source renderer), triangle meshes of two kinds, low-fidelity for coarse physics and high-quality, and video. Marble Labs is a showcase of projects and tutorials.
What the record does not state. The post names no prices or plans, gives no comparison and no user numbers; “first-in-class” is the company’s own wording. An outlet the next day restates the launch without testing it. The earlier preview of Marble (September 2025) is not recorded separately here.
Event record
- Event date
- November 12, 2025
- Timeline date
- Event date
- Verification
- Sources gathered automatically · September 30, 2026
- Lines
- ID
- evt-0960
General availability from 12 November 2025; a preview and beta users came earlier, “two months ago” in the post’s words.
Related events
Earlier
- Related RTFM: a world without a 3D model 2025links to this record
The RTFM post shows that 3D worlds can be created from a single image by combining RTFM with Marble; Marble reached everyone 27 days later.
- Related Marble: a limited beta 2025links to this record
Two months and twelve days later Marble became available to everyone.
- Related Genie 3 2025
Genie 3 generates a world in real time as video; Marble hands over a world as a file, Gaussian splats, meshes or video, that can be taken and used elsewhere.
Later
- Related World API: worlds on request 2026links to this record
The API gives programs the same Marble capabilities that only the website had in November 2025.
- Related A functional taxonomy of world models 2026links to this record
Marble is named as the company’s first move towards simulation: Gaussian splats together with collision meshes.
- Related Atlas: one model for several spatial tasks 2026links to this record
Atlas outputs the same Gaussian-splat representation as Marble and, in the company’s words, will power its future versions.
- Related AMD agrees to buy World Labs 2026links to this record
Marble is the first product of the company AMD is buying; the statements about the deal say nothing of its fate.