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Hunyuan 3D Smart Topology

Integrate

Model id hunyuan-3d/v3.1/smart-topology
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/hunyuan-3d/v3.1/smart-topology?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

This request: ≈$0.75 750 API credits · ≈ ₽80.60 Run it on this page

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Tencent 3D #3d#hunyuan#topology

Retopologizes an existing GLB or OBJ mesh into triangles or quads at a chosen polygon density

Tencent · 3D

Your first result goes here

Build a request below and run it with your API key. Outputs are copied to our storage, kept forever or 7 days for free.

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Controls are generated from the model schema. The code and the price update as you change them.

Advanced input_file_type · polygon_type · face_level
input_file_type default glb

Format of the input 3D file.

polygon_type default triangle

Face type for the output: triangle uses only triangular faces; quadrilateral combines quadrilateral and triangular faces.

face_level default medium

Desired polygon density: high provides more polygons and detail, medium provides a balance, and low uses fewer polygons.

POST /run/hunyuan-3d/v3.1/smart-topology?wait=20 quote → $0.75
# Run the model; wait up to 20 s for the finished result in the same call
curl -X POST "https://api.doitong.ru/v1/run/hunyuan-3d/v3.1/smart-topology?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{}'

# Still "queued" or "running"? Poll with the id from the response:
curl "https://api.doitong.ru/v1/requests/REQUEST_ID?wait=20" \
  -H "Authorization: Bearer $DOITONG_API_KEY"

Run this request

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About Hunyuan 3D Smart Topology

Optimizes the topology of an existing 3D mesh. Set the input format with `input_file_type` (glb or obj), choose `polygon_type` triangle or quadrilateral, and pick `face_level` high, medium or low for polygon density. Returns the processed GLB and URLs for other formats.

Parameters

NameType DefaultAllowed Description
input_file_typeoptional
Typeenum
Defaultglb
glbobj
Format of the input 3D file.
polygon_typeoptional
Typeenum
Defaulttriangle
trianglequadrilateral
Face type for the output: triangle uses only triangular faces; quadrilateral combines quadrilateral and triangular faces.
face_leveloptional
Typeenum
Defaultmedium
highmediumlow
Desired polygon density: high provides more polygons and detail, medium provides a balance, and low uses fewer polygons.
required

Output

GET /requests/req_8k2m4q7x1z9c3v5b6n0p2r4t
{
  "id": "req_8k2m4q7x1z9c3v5b6n0p2r4t",
  "object": "request",
  "model": "hunyuan-3d/v3.1/smart-topology",
  "status": "succeeded",
  "created_at": "2026-10-20T12:00:00Z",
  "started_at": "2026-10-20T12:00:02Z",
  "completed_at": "2026-10-20T12:00:09Z",
  "queue_position": null,
  "cost": {
    "credits": 750,
    "usd": "0.75",
    "charged": 750,
    "refunded": 0
  },
  "input": {},
  "output": {
    "model_glb": {
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_name": "0-output.jpeg",
      "file_size": 1843200
    },
    "model_urls": {
      "glb": {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      },
      "fbx": {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      },
      "obj": {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      },
      "mtl": {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      },
      "texture": {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      },
      "usdz": {
        "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
        "content_type": "image/jpeg",
        "file_name": "0-output.jpeg",
        "file_size": 1843200
      }
    }
  },
  "outputs": [
    {
      "type": "file",
      "url": "https://content.doitong.com/dev-api/2026/10/20/req_8k2m4q7x1z9c3v5b6n0p2r4t/0-output.jpeg",
      "content_type": "image/jpeg",
      "file_size": 1843200,
      "stored": true
    }
  ],
  "error": null,
  "metrics": {
    "inference_seconds": 6.8
  },
  "urls": {
    "self": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t",
    "cancel": "https://api.doitong.ru/v1/requests/req_8k2m4q7x1z9c3v5b6n0p2r4t/cancel"
  }
}
Your files, your choiceEvery outputs[].url is a copy on our storage: kept forever (paid per GB-month) or 7 days for free, by your account setting or ?storage=.
Same shape on every modeltype, url, content_type, width, height and duration, for images, video and audio alike. output is the model’s own result object.
Fields of output
model_glb
object {url, content_type, file_name, file_size}Primary file holding the processed 3D model, whose topology has been optimized.
model_urls
object {glb, fbx, obj, mtl, texture, usdz}Links to the 3D model in various formats.

More models: 3D

For AI agents: this page as Markdown is at https://doitong.com/en-GB/developers/models/hunyuan-3d/v3.1/smart-topology.md. All models and guides: https://doitong.com/developers/llms.txt