Text to 3D world generator: AI environments from a prompt
Type a description — "a foggy pine forest at dawn with a wooden footbridge" — and receive a full 360° world you can walk through and export. Powered by the Marble World API now, Atlas next.
Estimated cost
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How it works
- Write a prompt of up to 2,000 characters; style words (photoreal, low-poly, anime) are honoured.
- Pick draft for a quick look or HQ for production geometry.
- The model first generates a panorama, then lifts it into a 3D Gaussian splat world.
- Orbit the result in the browser and export splats, a GLB mesh or a fly-through video.
Input requirements
- Prompts in English produce the most consistent results.
- Describe layout and lighting explicitly; the model fills in materials and detail.
- Negative prompts are not supported; describe what you want instead.
Output formats
- Gaussian splat (.spz, .ply)
- Textured mesh (.glb) — Pro plan and above
- 360° panorama (.jpg)
- Fly-through video (.mp4)
Preview every output in the free Gaussian splat viewer before downloading.
Pricing
Generation is credit-based. World Labs sells credits at $1 for 1,250 credits, and a Marble 1.1 world costs 1,500 credits, about $1.20 (as of 2026-09-03); PLY splat export is free. This site's plans start at $19/month. Full breakdown on the pricing page.
Example worlds
Sample worlds generated through the Marble World API will be added here as the gallery grows. In the meantime, browse World Labs' public Marble gallery for reference and open any exported splat in the viewer above.
Last updated 2026-09-03
Frequently asked questions
Can I use generated worlds commercially?
Commercial use depends on the upstream provider’s terms. Marble’s current terms allow commercial use on paid plans; check the pricing page for the latest.
How long does a text-to-3D world take?
Draft worlds typically finish in a few minutes; HQ worlds take longer. You are emailed when the world is ready.
Is the world editable?
You can regenerate with a revised prompt or edit regions in the upstream Marble editor. In-browser editing on this site is planned.
Does it work for VR?
Yes. Export a .spz splat and load it in a WebXR viewer, or export a GLB mesh for Unity/Unreal VR projects.
When does this go live?
Text-to-3D generation launches in Phase 2 of this site. Join the waitlist for the launch email.
Related guides
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