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Hunyuan3D-2.1 is Tencent Hunyuan’s advanced 3D asset generation system that produces high-fidelity 3D models with Physically Based Rendering (PBR) textures. It is fully open-source with released model weights, training, and inference code. It improves on prior versions by using a PBR texture pipeline (enabling realistic material effects like reflections and subsurface scattering) and allowing community fine-tuning and extension. It supports both shape generation (mesh geometry) and texture generation modules. Physically Based Rendering texture synthesis to model realistic material effects, including reflections, subsurface scattering, etc. Cross-platform support (MacOS, Windows, Linux) via Python / PyTorch, including diffusers-style APIs.
Features
- Generates 3D shapes (meshes) and PBR textures in a two-stage pipeline (shape + texture)
- Full open-sourcing: weights, training code, inference code, pipelines available to the community
- Physically Based Rendering texture synthesis to model realistic material effects including reflections, subsurface scattering etc.
- Scalable VRAM usage: shape generation requires ~10 GB, texture ~21 GB, combined ~29 GB for full pipeline
- Cross-platform support (MacOS, Windows, Linux) via Python / PyTorch, including diffusers-style APIs
- Supports a “low VRAM mode” and offers Gradio demo, mesh export, configurable number of views etc.
Project Samples
