TRELLIS

TRELLIS is a family of open-source 3D generation models published by Microsoft on GitHub. This entry covers the current version, TRELLIS.2, whose model weights and paper appeared in December 2025, and notes where the original differs.

The original TRELLIS came with a December 2024 paper, which its repo describes as a CVPR 2025 Spotlight. It creates 3D assets from text or image prompts and can output radiance fields, 3D Gaussians or meshes, using models of up to 2 billion parameters. TRELLIS.2 is a single 4-billion-parameter image-to-3D model built on a sparse voxel format its authors call O-Voxel. Its GitHub README says it copes with open surfaces such as clothing and leaves, models base color, roughness, metallic and opacity, and exports a GLB with PBR materials. The authors report roughly 3 seconds per asset at 512³ resolution and about 60 seconds at 1536³ on an NVIDIA H100 GPU. The repo also includes code for texturing an existing shape and for training.

Code and weights are MIT licensed, so the cost is your own hardware: the README says TRELLIS.2 is tested only on Linux and needs an NVIDIA GPU with at least 24GB of memory (16GB for the original). Microsoft also hosts a Hugging Face demo that runs in a browser. For game developers it is a way to generate 3D props from images on their own machines; like any generated mesh, results should be checked before they go into an engine. AIGamer has not tested it.