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MODEL ID tencent:hunyuan-3d@3.1-pro
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Hunyuan 3D 3.1 Pro

Hunyuan 3D 3.1 Pro is a production-grade 3D generation model from Tencent that creates high-fidelity assets from text prompts or images. It uses enhanced 8-view reconstruction for improved spatial accuracy and reduced geometric artifacts, producing clean topology, watertight meshes, and PBR materials suitable for game development, 3D printing, and professional animation workflows.

Hunyuan 3D 3.1 Pro

API Options

Platform-level options for task execution and delivery.

taskType

string required value: 3dInference

Identifier for the type of task being performed

taskUUID

string required UUID v4

UUID v4 identifier for tracking tasks and matching async responses. Must be unique per task.

outputType

string default: URL

3D output type.

Allowed values 1 value

outputFormat

string default: GLB

Specifies the file format of the generated output. The available values depend on the task type and the specific model's capabilities.

    Allowed values 2 values

    webhookURL

    string URI

    Specifies a webhook URL where JSON responses will be sent via HTTP POST when generation tasks complete. For batch requests with multiple results, each completed item triggers a separate webhook call as it becomes available.

    Learn more 1 resource

    deliveryMethod

    string default: async

    Determines how the API delivers task results.

    Allowed values 2 values
    Returns complete results directly in the API response.
    Returns an immediate acknowledgment with the task UUID. Poll for results using getResponse.
    Learn more 1 resource

    uploadEndpoint

    string URI

    Specifies a URL where the generated content will be automatically uploaded using the HTTP PUT method. The raw binary data of the media file is sent directly as the request body. For secure uploads to cloud storage, use presigned URLs that include temporary authentication credentials.

    Common use cases:

    • Cloud storage: Upload directly to S3 buckets, Google Cloud Storage, or Azure Blob Storage using presigned URLs.
    • CDN integration: Upload to content delivery networks for immediate distribution. 
    // S3 presigned URL for secure upload
https://your-bucket.s3.amazonaws.com/generated/content.mp4?X-Amz-Signature=abc123&X-Amz-Expires=3600

// Google Cloud Storage presigned URL
https://storage.googleapis.com/your-bucket/content.jpg?X-Goog-Signature=xyz789

// Custom storage endpoint
https://storage.example.com/uploads/generated-image.jpg

    The content data will be sent as the request body to the specified URL when generation is complete.

    ttl

    integer min: 60

    Time-to-live (TTL) in seconds for generated content. Only applies when outputType is URL.

    includeCost

    boolean default: false

    Include task cost in the response.

    numberResults

    integer min: 1 max: 20 default: 1

    Number of results to generate. Each result uses a different seed, producing variations of the same parameters.

    Inputs

    Input resources for the task (images, audio, etc). These must be nested inside the inputs object.
    inputs » image

    image

    string

    Image input (UUID, URL, Data URI, or Base64).

    inputs » images

    images

    array of strings min items: 1max items: 3

    Array of image inputs (UUID, URL, Data URI, or Base64).

    Generation Parameters

    Core parameters for controlling the generated content.

    model

    string required value: tencent:hunyuan-3d@3-1-pro

    Identifier of the model to use for generation.

    Learn more 3 resources

    positivePrompt

    string max: 1024

    Text prompt describing elements to include in the generated output.

    Learn more 2 resources

    Settings

    Technical parameters to fine-tune the inference process. These must be nested inside the settings object.
    settings » faceCount

    faceCount

    integer min: 40000 max: 1500000 default: 500000

    Number of faces (polygons) in the generated 3D model.

    settings » generateType

    generateType

    string default: Normal

    Generation mode for 3D model creation.

    Allowed values 4 values
    Generates a textured geometry model.
    Generates a model with intelligent polygon reduction.
    Generates a texture-free white model.
    Accepts sketch or line art input.
    settings » pbr

    pbr

    boolean default: false

    Enable PBR (Physically Based Rendering) material generation.

    settings » polygonType

    polygonType

    string default: triangle

    Polygon type for mesh surface.

    Allowed values 2 values
    Triangle-only mesh.
    Mix of quad and triangle faces.
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