Licences and law / 3D web and commerce
Hunyuan3D in the EU: what its licence allows
Being able to download a model does not mean its licence covers your project. With Hunyuan3D, check the permitted territory before generating your first mesh.
If you work in Spain and are considering Hunyuan3D, start with the licence for the specific version. The community agreements for Hunyuan3D-2 and Hunyuan3D-2.1 limit the authorised territory, excluding the European Union, United Kingdom and South Korea.
Free access to the weights does not remove that restriction. Nor does a platform accepting an upload from your country establish permission.
The restriction also addresses outputs
In the Hunyuan3D-2.1 agreement, section 5.c includes generated outputs among the items whose use, reproduction, modification, distribution or display outside the territory is not authorised. Section 6.d, where Tencent disclaims rights in outputs, does not remove those conditions.
Read usage rights, territorial scope and output terms together. “The provider does not claim ownership” and “my use is authorised” answer different questions.
What to check when using an API
A hosted service may operate under additional terms or agreements. Do not infer its permissions from the model name or assume that a paid subscription resolves the territorial restriction.
Ask the provider to identify the agreement covering your use, intended territories and delivery to a client. Keep that documentation with the project. A separately negotiated licence needs to be assessed on its own terms.
This article examines the linked agreements for versions 2 and 2.1. It does not automatically extend the same conclusion to every future product called Hunyuan.
Reviewing assets you already generated
An older mesh needs a provenance review before you draw conclusions. Relevant facts include the version, generation date, accepted terms and the service or contract through which you obtained it.
Do not assume that retopology removes every condition attached to the source. Equally, do not treat all previous deliveries as legally identical without examining those facts.
| Record | What it helps establish |
|---|---|
| Model, version and date | Which release was used |
| Service and subscription | Which terms may apply |
| Licence or contract copy | Which permissions were documented |
| Images and other inputs | Which rights you supplied |
| Intended client and use | Where and how the output will be used |
For a delivery with contractual consequences, these records make a focused legal review possible.
Alternatives need a component-level check
The original TRELLIS repository identifies the model and most code as MIT-licensed, while some dependencies have separate terms. Check the exact components you use and retain required notices.
Meshy distinguishes assets generated on the free plan, covered by CC BY 4.0, from paid-plan assets. Rights also depend on input material and conditions governing publication of assets. Check the plan and terms that apply when generating.
Wan is a video-generation family, so it is not an equivalent tool for producing a 3D mesh. For that comparison, see evaluating a 3D generator for commercial use.
Before adopting a production tool
Approve both the permission to use an output and its technical suitability for production. Passing one review does not settle the other.
If you need to organise asset provenance and delivery requirements, tell us about the pipeline you are planning.
Sources
Texts reviewed on 20 September 2026. A specific contract must be assessed in its own circumstances.
- Tencent: Hunyuan3D-2 licence.
- Tencent: Hunyuan3D-2.1 licence.
- Microsoft: TRELLIS repository and licences.
- Meshy: ownership of generated models.
Checked on September 20, 2026