Model ID

Wan-AI_Wan2.1-FLF2V-14B-720P

Calling method: async

Wan-AI_Wan2.1-FLF2V-14B-720P API Usage Guide

Overview

Wan2.1 FLF2V-14B-720P is a state-of-the-art first-last-frame-to-video generation model that creates dynamic videos from first and last frame images. This model generates smooth transitions and interpolations between two given frames, achieving exceptional performance in frame-to-video generation.

Key Features

High-definition 720P video output
Advanced frame interpolation technology
Chinese and English text generation capabilities
Multi-GPU support with FSDP + xDiT USP technology
14B parameter Diffusion Transformer architecture

Authentication

All API requests require authentication using an API key. Include your API key in the Authorization header:

Authorization: Bearer YOUR_API_KEY

Submit Video Generation Request

Endpoint

POST /api/v1/apikey/requests

Request Format

curl -X POST "https://api.example.com/api/v1/apikey/requests" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Wan-AI_Wan2.1-FLF2V-14B-720P",
    "payload": {
      "prompt": "A beautiful sunset transition from day to night",
      "first_frame_image": "your_first_frame_image_data_here",
      "last_frame_image": "your_last_frame_image_data_here",
      "video_length": 5,
      "prompt_extend": false,
      "seed": -1
    }
  }'

Request Parameters

Parameter	Type	Required	Description	Default	Constraints
`model`	string	Yes	Model identifier	-	Must be “Wan-AI_Wan2.1-FLF2V-14B-720P”
`payload.prompt`	string	Yes	Text prompt describing the desired video	-	Required
`payload.first_frame_image`	string	Yes	Base64 image for the first frame	-	Required
`payload.last_frame_image`	string	Yes	Base64 image for the last frame	-	Required
`payload.video_length`	integer	No	Length of the generated video in seconds	5	5, 10
`payload.prompt_extend`	boolean	No	Enable advanced prompt extension	false	true/false
`payload.seed`	integer	No	Seed for reproducible results	-1	-1 to 2147483647

Response

{
  "request_id": "550e8400-e29b-41d4-a716-446655440000",
  "model": "Wan-AI_Wan2.1-FLF2V-14B-720P",
  "status": "queued",
  "created_at": 1749002469,
  "updated_at": 1749002469,
  "queued_at": 1749002469
}

Check Request Status

Endpoint

GET /api/v1/apikey/requests/{request_id}

Example

curl -X GET "https://api.example.com/api/v1/apikey/requests/550e8400-e29b-41d4-a716-446655440000" \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "request_id": "550e8400-e29b-41d4-a716-446655440000",
  "org_id": "your-org-id",
  "model": "Wan-AI_Wan2.1-FLF2V-14B-720P",
  "status": "success",
  "is_public": false,
  "payload": {
    "prompt": "A beautiful sunset transition from day to night",
    "first_frame_image": "your_first_frame_image_data_here",
    "last_frame_image": "your_last_frame_image_data_here",
    "video_length": 5,
    "prompt_extend": false,
    "seed": -1
  },
  "outcome": {
    "video_url": "https://storage.googleapis.com/bucket/path/video.mp4",
    "thumbnail_image_url": "https://storage.googleapis.com/bucket/path/thumbnail.jpg"
  },
  "qworker_id": "worker-123",
  "created_at": 1749002469,
  "updated_at": 1749002475,
  "queued_at": 1749002469
}

Request Status Values

Status	Description
`queued`	Request is waiting to be processed
`processing`	Request is currently being processed
`success`	Request completed successfully
`failed`	Request failed
`cancelled`	Request was cancelled

List Your Requests

Endpoint

GET /api/v1/apikey/requests?model_id=Wan-AI_Wan2.1-FLF2V-14B-720P

Example

curl -X GET "https://api.example.com/api/v1/apikey/requests?model_id=Wan-AI_Wan2.1-FLF2V-14B-720P" \
  -H "Authorization: Bearer YOUR_API_KEY"

Get Model Information

Endpoint

GET /api/v1/apikey/models/Wan-AI_Wan2.1-FLF2V-14B-720P

Example

curl -X GET "https://api.example.com/api/v1/apikey/models/Wan-AI_Wan2.1-FLF2V-14B-720P" \
  -H "Authorization: Bearer YOUR_API_KEY"

List Available Models

Endpoint

GET /api/v1/apikey/models

Example

curl -X GET "https://api.example.com/api/v1/apikey/models" \
  -H "Authorization: Bearer YOUR_API_KEY"

Response

{
  "model_ids": [
    "Wan-AI_Wan2.1-FLF2V-14B-720P",
    "other-model-1",
    "other-model-2"
  ]
}

Pricing

Pricing Type: Video length based pricing
Price: $0.06 per second
Unit: Second

Example cost calculation:

5-second video: 5 × $0.06 =$ 0.30
10-second video: 10 × $0.06 =$ 0.60

Video Specifications

Duration: 5-10 seconds
Resolution: 720P (1280x720)
Quality: High-definition with excellent detail and clarity

Tips for Better Results

Image Quality: Use high-quality, clear images for first and last frames
Prompt Writing: Use detailed, descriptive prompts in Chinese for best results
Frame Selection: Choose frames that have clear visual differences and logical connection
Performance Optimization: Use appropriate video_length, enable prompt_extend for complex scenarios, use seed for reproducibility

Overview

Model Quickstarts

Agents

Coding Tools

AgentBox Guides

Migration Guides

Wan-AI_Wan2.1-FLF2V-14B-720P

Wan-AI_Wan2.1-FLF2V-14B-720P API Usage Guide

Overview

Key Features

Authentication

Submit Video Generation Request

Endpoint

Request Format

Request Parameters

Response

Check Request Status

Endpoint

Example

Response

Request Status Values

List Your Requests

Endpoint

Example

Get Model Information

Endpoint

Example

List Available Models

Endpoint

Example

Response

Pricing

Video Specifications

Tips for Better Results

​Wan-AI_Wan2.1-FLF2V-14B-720P API Usage Guide

​Overview

​Key Features

​Authentication

​Submit Video Generation Request

​Endpoint

​Request Format

​Request Parameters

​Response

​Check Request Status

​Endpoint

​Example

​Response

​Request Status Values

​List Your Requests

​Endpoint

​Example

​Get Model Information

​Endpoint

​Example

​List Available Models

​Endpoint

​Example

​Response

​Pricing

​Video Specifications

​Tips for Better Results

Wan-AI_Wan2.1-FLF2V-14B-720P API Usage Guide

Overview

Key Features

Authentication

Submit Video Generation Request

Endpoint

Request Format

Request Parameters

Response

Check Request Status

Endpoint

Example

Response

Request Status Values

List Your Requests

Endpoint

Example

Get Model Information

Endpoint

Example

List Available Models

Endpoint

Example

Response

Pricing

Video Specifications

Tips for Better Results