World Labs

World Labs is a San Francisco company building large world models, founded by Fei-Fei Li. It raised $1 billion in funding announced on February 18 2026, with investors including AMD, Autodesk, Emerson Collective, Fidelity Management & Research Company, NVIDIA and Sea. That figure is the total the company has disclosed publicly and it sits well above the seed and Series A rounds that preceded it.

AMD signed a definitive agreement to acquire World Labs on September 28 2026. The transaction is expected to close by the end of 2026, subject to regulatory approvals and other customary closing conditions. Fei-Fei Li is set to join AMD as Executive Vice President and Chief Scientist, reporting to CEO Lisa Su, while Justin Johnson and Ben Mildenhall continue leading the World Labs team with her. World Labs has not said whether the deal changes Marble pricing, the World API or Spark's MIT licence.

The first product is Marble, a multimodal world model that generates spatially coherent, persistent 3D worlds. Marble accepts text, a single image, multiple images, 360 panoramas and video, and exposes an advanced create flow with a Chisel mode for direct 3D layout control and an expand function for growing a world into a larger space. Video input is gated to paid tiers.

Marble is priced by credits and generation count across four tiers. The free tier gives 7,000 credits and up to four world generations. Standard at $20 per month gives 20,000 credits and up to twelve generations, and it is the tier where splat file export, 360 panorama export, low resolution collider mesh export, community asset downloads, draft mode and credit top ups unlock. Pro at $35 per month gives 40,000 credits and up to twenty five generations, and adds high resolution textured mesh export, enhanced rendered video output and commercial rights. Max at $95 per month gives 120,000 credits and up to seventy five generations. API credits are purchased separately from top up credits.

The World API, announced in January 2026, exposes Marble's world generation to applications directly from text, images and video.

Atlas, announced on September 1 2026, is the next generation world model and writes reconstructed scenes out as 3D Gaussian splats or point clouds. It is a multimodal autoregressive diffusion transformer pretrained from scratch on text, images, video and 3D, operating on both 2D frames and 3D depth maps, where RTFM, the model World Labs announced in October 2025, generated each frame from earlier frames with no explicit geometry. Camera controlled generation takes camera geometry as an input and returns up to one minute of 1440p video from one or more images, and World Labs says the shared spatial context reconstructs a scene from as few as two or three photographs and holds more than a hundred. World Labs published no paper, model card or code with the announcement, says Atlas will power future versions of Marble, and has opened it to early access with selected partners.

Spark is World Labs' separate open source contribution, an MIT licensed 3D Gaussian Splatting renderer for three.js that the company shipped after renaming it from Forge. Spark 2.0 arrived on April 14 2026 with a streamable level of detail system for splats on the web, described in the company's own technical writeup. Spark 2.2.0 reached npm on September 11 2026 with faster level of detail traversal and Rust decoders, ending four months in which the package sat at v2.1.0. Spark 2.3.0 followed on September 30 2026 with on demand rendering fixed for paged level of detail, SPZ v3 restored as the default export, writeSpz accepting extended splats, authenticated loading through withCredentials and custom request headers, and a fix for pages running more than one renderer.

World Labs acquired SceniX, a robotics company, on July 21 2026, framing the deal around bringing world models and learning based simulation into a closed loop with real world robot learning. The company followed a week later with a writeup of real to sim to real as a training and evaluation engine for robot policies. Neither the acquisition nor the robotics direction has an obvious dependency on Marble's consumer tiers, and World Labs has not said what SceniX technology will ship in a product.

Marble is available now, and Atlas is in early access.