Late last year, Fenestra was one of the first platforms to support World Labs’ original Marble release. Today, we’re opening up Marble Mini and Marble Plus to all users - bringing best-in-class spatial generation directly into Fenestra.

These models turn simple image inputs into explorable 3D environments. You can move through them, inspect materials, and experience how scale, light, and form work together in space. Both models are available from the Spatial section in Fenestra:

Marble Mini

A smaller, contained spatial scene. Ideal for quick tests, experimentation, and understanding how image-to-space works.

(~30 seconds to generate)

Marble Plus

A larger, more detailed environment with richer material depth and stronger spatial presence. This is where the detail really comes through.

(5–10 minutes to generate)

Mini is perfect for fast spatial exploration.

Plus is where the quality shines - sharper, more detail, and far closer to what real spatial presentation can look like.

Compared to many existing Gaussian Splatting solutions, Marble Plus fills key gaps in depth, clarity, and material fidelity.

For best results, we recommend combining it with Nano Banana Pro to:

• Edit spaces
• Change furniture
• Explore design variations
• Generate Worlds

Try it yourself in Fenestra.

Create Spaces In Seconds

Imagine Worlds!