Marble 1.1 — World Labs Just Made Their World Model Significantly Better

World Labs has released a meaningful update to its generative world model: Marble 1.1 and a new, more powerful variant called Marble 1.1 Plus.

The update focuses on two key areas: noticeably higher visual quality and the ability to generate much larger, more complex 3D environments.

What’s New in Marble 1.1

Better lighting and contrast — Scenes now look more natural and visually appealing.
Major reduction in artifacts — The model produces significantly cleaner geometry and fewer visual glitches compared to the previous version.
Improved overall fidelity — Details in textures, materials, and lighting are sharper and more consistent.

The standard Marble 1.1 is already a solid step up and remains the recommended starting point for most users.

Marble 1.1 Plus: Built for Scale

For those who need bigger worlds, World Labs introduced Marble 1.1 Plus. This model automatically expands its spatial coverage during generation when the prompt allows for larger, more complex environments.

Instead of being locked into a fixed-size “cube,” 1.1 Plus can dynamically add extra space, letting you create expansive scenes in a single generation pass. Pricing reflects this flexibility: a base cost plus additional credits for each extra “dynamic cube” the model adds.

Why the Demo Still Runs Smoothly in the Browser

One of the smartest technical decisions World Labs made is sticking with Gaussian Splats (instead of pure neural rendering like many competitors).

This approach allows:

Real-time rendering directly in the browser;
Efficient level-of-detail (LoD) streaming;
Much better performance even for larger scenes.

You can still go to [marble.worldlabs.ai](https://marble.worldlabs.ai), type a prompt, and instantly explore the generated 3D world — no heavy downloads or local GPU required.

Why This Matters

World Labs is quietly building one of the most practical and accessible platforms for generative 3D worlds. By focusing on Gaussian Splats, they’ve managed to deliver high-quality results with excellent browser-based interactivity — something that’s still rare among competitors who rely on slower neural rendering pipelines.

With Marble 1.1 and 1.1 Plus, the gap between “impressive demo” and “actually useful for larger projects” is getting smaller.

If you haven’t tried Marble yet, now is a great time. The quality jump is noticeable, and the ability to generate bigger worlds opens up new creative possibilities for game devs, architects, filmmakers, and world-builders.

Go play with it here: marble.worldlabs.ai

What kind of world will you generate first?