# microsoft/TRELLIS.2-4B

> Open-source 4B flow-matching model generating textured 3D assets from single images.

TRELLIS.2-4B is an open-source image-to-3D foundation model developed by Microsoft that creates 3D meshes with physically based rendering (PBR) materials from a single input image. It utilizes a sparse O-Voxel representation to support complex topologies, open surfaces, and translucent materials without relying on iso-surface fields. Output meshes can be exported to standard formats like GLB for use in 3D production pipelines.

Website: https://huggingface.co/microsoft/TRELLIS.2-4B

## What it is for

- Generate textured 3D assets from concept art or reference photos
- Produce game-ready GLB models with PBR material channels
- Texture existing 3D meshes based on reference imagery
- Prototype 3D props quickly for visual effects or CGI

## Features

- O-Voxel sparse representation handling non-manifold geometry and open surfaces
- Flow-matching transformer architecture with 4 billion parameters
- Generates PBR materials including support for transparency and translucency
- High-resolution voxel grid outputs up to 1536³
- Direct GLB export with texture decimation and remeshing controls
- Fast inference completing 512³ models in roughly 3 seconds on an H100 GPU

## Pricing

Open source. Free (MIT License)

## Details

- Type: AI model
- Category: [AI](https://xiry.app/topics/ai.md)
- Topic: [3D Generation](https://xiry.app/topics/ai/3d-generation.md)
- Open source: yes
- Platforms: Linux, Code library, Self-hosted
- For: Game developers, 3D artists, VFX technical directors, and AI researchers.
- Alternative to: Tripo3D, Meshy, Luma Genie, CSM 3D
- Tags: image to 3d, mesh generation, pbr, huggingface, open weights, microsoft

## Why it was saved

- [@evolving.ai, 22 December 2025](https://www.instagram.com/p/DSkPewZDdb6/): Generates production-ready 3D models with high fidelity and PBR textures quickly for game development, CGI, and 3D design workflows.

## Compare

- [Alternatives to Meshy](https://xiry.app/alternatives/meshy.md)

## Related

- [Meshy](https://xiry.app/resources/meshy): Turn text prompts and 2D images into textured, printable 3D models. (Web app, Freemium)
- [3D Model Generator](https://xiry.app/resources/3d-model-generator): Turn freehand sketches into textured 3D models inside a Three.js scene (Web app)
- [img2threejs](https://xiry.app/resources/img2threejs): Rebuilds reference images as procedural, animation-ready Three.js models in code. (GitHub repo, Open source)
- [TRELLIS](https://xiry.app/resources/trellis): AI model that generates textured 3D assets from single images (Web app, Free)
- [Tripo AI](https://xiry.app/resources/tripo-ai): AI generator converting text and 2D images into 3D models. (Web app, Freemium)
- [World Labs](https://xiry.app/resources/world-labs): Spatial AI models that turn images, text, and video into 3D worlds (AI model)

Updated 3 October 2026. Page: https://xiry.app/resources/microsoft-trellis-2-4b

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