TRELLIS

TRELLIS is Microsoft's large-scale 3D asset generation model (CVPR 2025 spotlight), open-sourced under the permissive MIT license. It uses a structured 3D latent space (SLAT) that decodes into multiple representations — explicit meshes via Flexicubes, radiance fields, and 3D Gaussians — from either text or image prompts, with PBR textures (metallic/roughness maps) out of the box. Model sizes range from a 342M text-base to a 2B text-xlarge, and TRELLIS 2 further improved quality. It exports to standard GLB/OBJ/PLY formats and supports local 3D editing and variant generation.

The honest picture: outputs are static meshes — no animation rigs. Real-time generation on consumer GPUs is not its strength (TripoSR is faster for previews), and extremely high-poly detail goes to Hunyuan3D-2. Setup involves heavy CUDA dependencies (kaolin, custom kernels). But for structured, part-aware 3D assets with clean semantic parts for game pipelines, it is one of the best open options available.

Clone github.com/microsoft/TRELLIS, create the conda env via setup.sh (CUDA 11.8/12.2), download weights from Hugging Face (JeffreyXiang/TRELLIS-*).