Hunyuan3D 2.1 at a glance
Hunyuan3D 2.1 combines a 3.3B image-to-shape model with a 2B paint model. The official release includes model weights and training code for both geometry and material stages.
- Shape model
- 3.3B parameters
- Paint model
- 2B parameters
- Official VRAM note
- 10 GB shape / 21 GB texture / 29 GB combined — Reported by the upstream repository
- Pipeline
- Separate shape and PBR paint stages
- License
- Repository-specific — Read the current model and code terms before use
Where it stands out
- Separate geometry and PBR texture stages
- Released weights and training code
- Can apply the paint stage as part of a modular workflow
Limits to plan around
- Running both stages locally requires substantially more memory than shape alone
- Installation includes compiled rasterization components
- Benchmark claims are not directly comparable unless inputs, settings, and hardware are controlled
A two-stage asset pipeline
Hunyuan3D-Shape creates geometry, while Hunyuan3D-Paint synthesizes surface appearance. This separation can be useful when geometry and texturing need different iteration paths.
Evaluate the complete asset
Compare silhouette and hidden-side geometry separately from material response. A strong texture can conceal geometry problems, and neutral clay renders help expose them.
This is an independent editorial profile. Trellis 3D is not affiliated with or endorsed by the model developer.