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POST
/
happyhorse-1.0-r2v
/
async
curl --request POST \
  --url https://api.modellix.ai/api/v1/alibaba/happyhorse-1.0-r2v/async \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "reference_images": [
    "https://example.com/girl.jpg"
  ],
  "prompt": "A woman character1 wearing a red qipao, the camera moves smoothly"
}
'
{
  "code": 0,
  "message": "success",
  "data": {
    "status": "pending",
    "task_id": "task-abc123",
    "model_id": "model-123",
    "get_result": {
      "method": "GET",
      "url": "https://api.modellix.ai/api/v1/tasks/task-abc123"
    }
  }
}

Documentation Index

Fetch the complete documentation index at: https://docs.modellix.ai/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

API Key authentication. Format: Bearer YOUR_API_KEY.

Body

application/json
​
reference_images
string<uri>[]
required

Array of reference image URLs. Supports 1-9 images. Images are referenced in the prompt using character1, character2, etc., following array order. Image requirements: Format: JPEG, JPG, PNG, WEBP; Resolution: Short edge >= 400 pixels (720P+ recommended); File size: <= 10MB per image. Supports HTTP/HTTPS URLs

Required array length: 1 - 9 elements
Pattern: ^https?://
​
prompt
string
required

Text prompt describing the scene and referencing characters. Required. Use character1, character2, character3, etc. to reference images in the reference_images array (first image = character1, second = character2, etc.). Supports any language input. Maximum length: 5000 non-Chinese characters or 2500 Chinese characters (automatically truncated if exceeded)

Required string length: 1 - 5000
Examples:

"A woman character1 wearing a red qipao, camera moves smoothly"

"Character1 interacts with object character2 in the scene"

​
resolution
enum<string>
default:1080P

Video resolution level. The model automatically scales to the nearest total pixels based on the selected resolution

Available options:
720P,
1080P
​
ratio
enum<string>
default:16:9

Video aspect ratio. Determines the output video dimensions

Available options:
16:9,
9:16,
1:1,
4:3,
3:4
​
duration
enum<integer>
default:5

Video duration in seconds. Must be an integer between 3 and 15

Available options:
3,
4,
5,
6,
7,
8,
9,
10,
11,
12,
13,
14,
15
Required range: 3 <= x <= 15
​
seed
integer

Random seed for reproducibility. If not specified, the system generates a random seed. Note: Due to the probabilistic nature of model generation, even with the same seed, results may not be completely identical

Required range: 0 <= x <= 2147483647

Response

200 - application/json

Task submitted successfully

​
code
integer
required

Response code, 0 indicates success

Example:

0

​
message
string
required

Response message

Example:

"success"

​
data
object
required