What is Hunyuan 3D Smart Topology (PolyGen)?
Tencent's API that retopologises 3D meshes into clean geometry.
Who is Hunyuan 3D Smart Topology (PolyGen) best for?
Hunyuan 3D Smart Topology (PolyGen) is best for 3D teams that need dense AI meshes turned into low-poly models.
Cleaning up AI-generated models
Tencent recommends it for untopologised high-poly meshes, such as Hunyuan 3D output, which it turns into models with a lower polygon count.
Game assets
Hard-surface objects, game characters and props are the categories Tencent says it handles best.
Apps with a 3D pipeline
One API call takes a GLB or OBJ link up to 200MB and returns a job, so it slots into existing 3D generation or editing tools.
How much does Hunyuan 3D Smart Topology (PolyGen) cost?
Hunyuan 3D Smart Topology (PolyGen) costs 50 Tencent Cloud credits per call, about $0.75 with the smallest prepaid pack or $1 pay as you go, and new accounts get 200 free credits.
- 200 credits on first activation, about 4 Smart Topology calls
- Shared across the HY 3D Global APIs
- Valid for 1 year
- $1 per Smart Topology call (50 credits)
- Billed daily for the previous day's use
- Switched on in the console
- $0.015 per credit, $0.75 per Smart Topology call
- About 20 Smart Topology calls
- Unused packs refundable within 7 days
- $0.0145 per credit
- About 200 Smart Topology calls
- Unused packs refundable within 7 days
Larger prepaid packs cost $700 for 50,000 credits and $1,350 for 100,000, each valid for a year. Smart Topology uses 50 credits per call and failed calls are free. It runs 1 task at a time by default; each extra concurrent task costs $5,000 a month. When free or prepaid credits run out, calls fail until you buy a pack or turn on postpaid billing. Prices are in US dollars on Tencent Cloud International. Full pricing on intl.cloud.tencent.com. We checked these prices on .
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Questions about Hunyuan 3D Smart Topology (PolyGen)
What is Hunyuan 3D Smart Topology (PolyGen)?
Tencent's API that retopologises 3D meshes into clean geometry.
Who is Hunyuan 3D Smart Topology (PolyGen) for?
Hunyuan 3D Smart Topology (PolyGen) is best for 3D teams that need dense AI meshes turned into low-poly models.
Is Hunyuan 3D Smart Topology (PolyGen) free?
Only as a trial. New Tencent Cloud accounts get 200 free credits for the HY 3D Global APIs, valid for a year, which covers about four Smart Topology calls at 50 credits each. After that it costs $0.0135 to $0.02 per credit, depending on how you buy.
How much does Hunyuan 3D Smart Topology (PolyGen) cost?
Hunyuan 3D Smart Topology (PolyGen)'s paid plans are Postpaid at $0.02 per credit, 1,000 credits at $15 prepaid, valid 1 year and 10,000 credits at $145 prepaid, valid 1 year.
Where can I try Hunyuan 3D Smart Topology (PolyGen)?
On its official website, intl.cloud.tencent.com.
Can Hunyuan 3D Smart Topology output quad meshes?
Partly. The Smart Topology API outputs triangle faces by default, or a mix of triangles and quads if you ask for it, at a high, medium or low face-reduction level. It accepts GLB or OBJ files up to 200MB, and Tencent says already-topologised models are not supported.
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