By World LabsLearning Objectives
- Understand what a world model produces that an image or video generator does not
- Know which plan actually grants commercial rights to a generated world
- Read a plan limit that is governed by two separate counters at once
What Is Marble?
Marble is the first product from World Labs, the spatial-intelligence company founded in 2024 by Fei-Fei Li, Justin Johnson, Ben Mildenhall and Christoph Lassner. Its documentation describes it as helping you create high-fidelity, persistent 3D worlds, powered by multimodal world models that reconstruct, generate and simulate three-dimensional environments.
The distinction from an image or video generator is persistence. A video model produces a fixed sequence of frames that looks convincing from the camera path it generated, and has no answer for what lies behind the camera. Marble produces a spatial representation you can move around inside, return to, edit, and export as a file that other software can open. The output is a place rather than a clip.
It accepts text prompts, a single image, multiple images, panoramic images and video, and it also accepts 3D structure directly through a built-in layout tool called Chisel, which lets you block out the arrangement of a space rather than describing it in words. Generated worlds can be expanded into larger spaces and edited interactively. Exports cover web sharing, virtual reality, development assets, integration with digital content creation software, and mesh export.
⚠️Warning
Commercial rights begin at the Pro plan, not at the free or entry plan. World Labs grants commercial rights to generated worlds starting with Pro at 35 dollars per month. The free plan and the 20 dollar Standard plan do not carry them. The 95 dollar Max plan inherits them from Pro and adds scale rather than any further rights, so a summary that presents commercial rights as a feature of the most expensive plan can lead you to pay 95 dollars a month for a 35 dollar entitlement. Check the threshold on the vendor's own pricing page rather than a secondary description. Confirmed there and in the billing documentation.
💡Key Concept
Gaussian splatting: a way of representing a 3D scene as millions of small, soft, coloured blobs rather than as a mesh of triangles. It reconstructs real or generated spaces with high visual fidelity and renders quickly, which is why it has become the common output format for world models. A mesh is still what most traditional 3D software expects, which is why Marble exports both.
📝Note
Atlas is a separate thing, and the waitlist notice refers to it rather than to Marble. The pricing page carries a banner inviting you to request access to Atlas, World Labs' omni world model announced in September 2026, and noting that it is coming to Marble soon. Atlas itself remains early access by waitlist. Marble is self-serve today, and reading that banner as a gate on Marble gets the access model backwards.
🎯Tip
Find Marble at the vendor's own site, where accounts are created with a Google or GitHub sign-in. World Labs also publishes Spark, an MIT-licensed Gaussian splat renderer for the THREE.js library, and sells a separate developer platform with its own API credits.
Pricing
Every paid plan is billed monthly and governed by two counters at once: a credit allowance and a cap on world generations. The generation cap is usually what binds first, so read both before choosing a plan.
- 7,000 credits and up to 4 world generations
- Text, image, multi-image and panorama input
- Chisel layout tool, editing and world expansion
- No commercial rights
- 20,000 credits and up to 12 world generations
- Adds video input and draft mode
- Exports splats, panoramas and low-resolution collider meshes
- No commercial rights
- 40,000 credits and up to 25 world generations
- Adds high-resolution textured mesh export
- Adds enhanced rendered video output
- Commercial rights to generated worlds
- 120,000 credits and up to 75 world generations
- Everything in Pro
- Scale rather than extra capability
- Commercial rights to generated worlds
Top-up credits are available on Standard and above, at 5 dollars for 5,000 credits or 20 dollars for 22,000. These are not the same as the API credits sold for the developer platform, which are purchased separately and do not interchange.
Core Features
Persistent 3D Worlds
Generates a spatial representation you can navigate and return to, rather than a fixed camera path through a generated scene.
Multimodal Input
Accepts text, one image, several images, a panorama or a video, so an existing photograph of a real space is a valid starting point.
Chisel Layout Control
A built-in tool for blocking out the 3D arrangement of a space directly, giving structural control that a text prompt cannot express.
World Expansion and Editing
Generated worlds can be extended into larger spaces and edited interactively rather than regenerated from scratch.
Standard Export Formats
Exports splats, panoramas and meshes, including high-resolution textured meshes on Pro, so output moves into existing 3D pipelines.
Strengths
- Persistence is the real differentiator — a navigable place, not a rendered clip
- Genuinely self-serve — a free tier and an immediate sign-in, unlike its sibling Atlas
- Input flexibility — text, images, panoramas, video, or direct 3D blockout
- Exports into real pipelines — meshes and splats that other software opens
- An MIT-licensed renderer — Spark makes generated splats displayable on the open web
Limitations and Considerations
- The free and Standard plans carry no commercial rights — the threshold is Pro at 35 dollars per month
- Two limits apply at once — credits and world generations, and the generation cap usually binds first
- Mesh quality is tiered — low-resolution collider meshes on Standard, high-resolution textured meshes only on Pro
- Top-up credits are not API credits — the developer platform bills separately and the two do not interchange
- Spark being MIT-licensed says nothing about your worlds — the renderer's licence and the worlds' commercial terms are independent
- Video input is not on the free plan — it begins at Standard
Best Use Cases
| Use Case | Why Marble Fits | Caveat |
|---|---|---|
| Previsualising a set or environment | Navigable space beats a fixed camera path | Commercial use needs Pro |
| Turning photographs of a real place into 3D | Panorama and multi-image input are native | Video input starts at Standard |
| Game and virtual reality blockout | Chisel gives structural control, meshes export | High-resolution meshes need Pro |
| Publishing an explorable scene on the web | Spark renders splats in THREE.js under MIT | The renderer licence does not grant world rights |
| Evaluating world models generally | Self-serve with a free tier | Four generations a month on the free plan |
Key Takeaways
- Marble is World Labs' first product, generating persistent, explorable 3D worlds rather than flat images or video clips
- It accepts text, images, panoramas, video and direct 3D layout through the Chisel tool, and exports splats, panoramas and meshes
- Commercial rights to generated worlds begin at the Pro plan at 35 dollars per month, not at the free plan and not at Standard
- Commercial rights begin at Pro and carry up to Max, so the 95 dollar plan buys scale rather than any additional rights
- Plans are governed by a credit allowance and a world-generation cap together, and the generation cap is usually the one that binds
- Marble is self-serve today, while its sibling model Atlas remains early access by waitlist, and the waitlist banner on the pricing page refers to Atlas
