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Modeling mode
In-app Babylon studio: chat writes mesh code, a live viewport updates, you inspect parts, then export GLB. Not the Unreal viewport.
Last updated 19 September 2026
What you are looking at

Modeling mode is a Babylon.js studio inside the desktop app. A modeling specialist writes JavaScript for @babylonjs/core via execute_babylon_code. The live viewport, Scene Explorer, and Properties pane update on your machine. When the inspect is clean, the scene exports to GLB.
The loop
- Switch to Modeling in the title bar (Ctrl+Shift+M).
- Ask for a specific object. The agent should author named parts with real proportions.
- It inspects the live scene. Empty, off-camera, or overlapping-origin results should be redone or marked incomplete — not dressed up as finished.
- Colour / PBR stays on the Babylon mesh (model-materials), not Unreal MI_* assets.
- Export GLB from the studio. Publishing into Unreal is a later, separate step.
What this is not
It is not the Unreal viewport, not a StaticMesh author inside /Game/Geometry, and not a hosted text-to-3D farm. Game-dev Blueprints and C++ stay on the Unreal plugin path. See Game-dev vs Modeling · Agent roster · Blog note.