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Microsoft Open-Sources TRELLIS.2 for 3D Generation From a Single Image

July 1, 2026 at 21:14 EDT

Media Generation
Open Source
Foundation Models

Microsoft Research has released TRELLIS.2, an open-source model (4B parameters) that generates high-fidelity 3D meshes with full PBR materials from a single image. The arrival of a ComfyUI wrapper is also bringing it into practical local use.

Microsoft Research · Open-Weight 3D Model

TRELLIS.2 turns a single image into a game-ready 3D asset

A 4B-parameter, MIT-licensed model generates high-fidelity 3D meshes with embedded PBR materials from one image — no text prompt — outputting GLB files that drop straight into Blender, Unity and Unreal.

Parameters, open weights (MIT)

<100ms

O-Voxel → mesh in CUDA

~6GB

VRAM on optimized builds

Voxel grid resolution — 3× jump over the original TRELLIS

512³

minimum

1536³

maximum

Flexibly adjustable resolution via a native 3D VAE with 16× spatial compression.

One pass — geometry + materials together

Single image
(no text prompt)

→

O-Voxel + flow-matching transformer

→

GLB with embedded PBR

Base Color Roughness Metallic Opacity → Blender · Unity · Unreal

What developers praise

Handles complex shapes, open surfaces & transparency
Drag results straight into Blender / Unity / Unreal
Edge in single-image focus & PBR fidelity
ComfyUI wrappers; product design, games, 3D printing

Noted limitations

High resolution increases VRAM consumption
Opacity may need manual material connection post-export
Occasional topology touch-ups reported

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