Hunyuan Motion Fast

POST/v1/run

Hunyuan Motion Fast is Tencent's text-to-3D AI model. Turn written descriptions into textured 3D objects with realistic geometry and materials.

Request body

Submit an async generation request. The model field selects the model; other fields are model-specific input parameters.

stringmodelrequired

Model identifier. Set to tencent/hunyuan-motion/fast.

Default: tencent/hunyuan-motion/fast

stringpromptrequired

Text prompt describing the motion to generate.

Optional<integer>duration

Motion duration in seconds (0.5-12.0).

Range: 0.5 to 12

Default: 5

Optional<string>output_format

Output format: 'fbx' for animation files, 'dict' for raw JSON.

Allowed values: fbx, dict

Default: fbx

Response Schema

The submit endpoint returns a run response. If its status is pending or running, poll GET /v1/run/{id} with the returned opaque ID until it reaches a terminal state.

stringidrequired

Opaque SandBase run identifier. Use it exactly as returned; no prefix is guaranteed.

stringstatusrequired

Current public run status.

Allowed values: pending, running, completed, failed, timeout

Optional<string>model

Public SandBase model name used for this run.

Optional<array<object>>outputs

Present only for completed runs. Each object is capability-specific; inspect the selected model schema for its fields.

Optional<object>error

Present only for failed or timeout runs. Contains a public error type and sanitized message.

Optional<string>error.type

Stable public error category.

Optional<string>error.message

Sanitized error message safe to show to clients.

Optional<object>usage

Usage details when available.

Model capabilities

array<string>capability_tagsrequired

Capabilities declared by the model registry.

Default: text-to-3d

stringexecution_moderequired

Execution mode declared by the model registry.

Default: async

# 1. Submit a generation request
curl -X POST https://api.sandbase.ai/v1/run \
  -H "Authorization: Bearer $SANDBASE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "model": "tencent/hunyuan-motion/fast",
  "prompt": "A person is running then takes a big leap.",
  "duration": 5,
  "output_format": "fbx"
}'

# 2. If the response is still running, poll the returned id
curl https://api.sandbase.ai/v1/run/f3d2e8a1-7c4b-4a12-9d2e-123456789abc \
  -H "Authorization: Bearer $SANDBASE_API_KEY"

Response202 Accepted

{
  "id": "f3d2e8a1-7c4b-4a12-9d2e-123456789abc",
  "model": "tencent/hunyuan-motion/fast",
  "status": "running"
}