Happy Horse 1.1

curl --request POST \
  --url https://api.poyo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "model": "happy-horse-1.1",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "prompt": "Medium shot of a professional news anchor at a sleek desk in a modern broadcast studio, cool blue lighting, softly glowing screens behind. 0-5s: He looks into the camera and says in a clear measured voice, \"Good evening. Tonight, a breakthrough that could change how millions of us work.\" 5-10s: He turns slightly toward a second camera, \"We'll have the full story, and what it means for you, right after this.\" Precise lip-sync, subtle studio room tone, crisp broadcast quality, shallow depth of field.",
    "aspect_ratio": "16:9",
    "resolution": "1080p",
    "duration": 10
  }
}
EOF

{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2026-06-23T10:30:00"
  }
}

{
  "code": 400,
  "error": {
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "code": 400,
  "error": {
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

POST

api

generate

submit

curl --request POST \
  --url https://api.poyo.ai/api/generate/submit \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data @- <<EOF
{
  "model": "happy-horse-1.1",
  "callback_url": "https://your-domain.com/callback",
  "input": {
    "prompt": "Medium shot of a professional news anchor at a sleek desk in a modern broadcast studio, cool blue lighting, softly glowing screens behind. 0-5s: He looks into the camera and says in a clear measured voice, \"Good evening. Tonight, a breakthrough that could change how millions of us work.\" 5-10s: He turns slightly toward a second camera, \"We'll have the full story, and what it means for you, right after this.\" Precise lip-sync, subtle studio room tone, crisp broadcast quality, shallow depth of field.",
    "aspect_ratio": "16:9",
    "resolution": "1080p",
    "duration": 10
  }
}
EOF

{
  "code": 200,
  "data": {
    "task_id": "task-unified-1757165031-uyujaw3d",
    "status": "not_started",
    "created_time": "2026-06-23T10:30:00"
  }
}

{
  "code": 400,
  "error": {
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

{
  "code": 400,
  "error": {
    "message": "Invalid request parameters",
    "type": "invalid_request_error"
  }
}

After submission, a task_id will be returned. If you provided a callback_url, when the task status becomes finished or failed, a POST request will be sent to the callback_url.
Regardless of whether callback_url is provided, you can retrieve the result through the unified Query Task Status endpoint.

happy-horse-1.1 supports text-to-video, image-to-video, and reference-to-video through one public model ID.

Models

happy-horse-1.1 - Alibaba Happy Horse 1.1 video generation

Input modes

Text to Video

Send a prompt without image_urls or reference_image_urls. Use aspect_ratio, resolution, and duration to control the output.

Image to Video

Send a single-item image_urls array. The image is used as the first frame. prompt is optional in this mode.

Reference to Video

Send reference_image_urls with 1-9 images and a required prompt. Do not combine reference_image_urls with image_urls.

Required parameters

model: happy-horse-1.1
input.prompt: Required for text-to-video and reference-to-video. Optional for image-to-video. Maximum length is 2,500 characters.
input.image_urls: Required for image-to-video.
input.reference_image_urls: Required for reference-to-video.

Optional parameters

image_urls: Single-item first-frame image URL array for image-to-video
reference_image_urls: 1-9 images for reference-to-video
aspect_ratio: Text-to-video and reference-to-video only. 21:9, 16:9, 4:3, 1:1, 3:4, 4:5, 5:4, 9:16, or 9:21. Default is 16:9
resolution: 720p or 1080p. Default is 1080p
duration: Integer seconds from 3 to 15. Default is 5
seed: Optional integer from 0 to 2147483647
enable_safety_checker: Optional boolean

Notes

image_urls must resolve to exactly one image and is only for image-to-video.
reference_image_urls selects reference-to-video and cannot be used together with image_urls.
For text-to-video and reference-to-video, omit image_urls and use aspect_ratio.

Authorizations

Authorization

string

header

required

All API endpoints require Bearer Token authentication.

Create an API key: sign in to PoYo, open Dashboard → API Key at poyo.ai/dashboard/api-key, and click to create a key.

Add it to the request header:

Authorization: Bearer YOUR_API_KEY

Body

application/json

model

enum<string>

required

Happy Horse 1.1 model identifier

Available options:

happy-horse-1.1

input

object

required

Show child attributes

callback_url

string<uri>

Webhook callback URL for result notifications

Example:

"https://your-domain.com/callback"

Response

Task submitted successfully

code

enum<integer>

required

Business status code. 200 means success; any other value means the request failed. Always check this field: some validation errors return HTTP 200 with code: 400 in the body.

200: Success
400: Invalid request parameters
401: Missing or invalid API key
402: Insufficient credits
403: Permission denied
404: Resource not found
408: Request timeout
429: Rate limit exceeded
500: Internal server error
502: Upstream service error
503: Service unavailable

See Error Codes for details.

Available options:

200,

400,

401,

402,

403,

404,

408,

429,

500,

502,

503

Example:

200

data

object

required

Show child attributes

​Models

​Input modes

​Text to Video

​Image to Video

​Reference to Video

​Required parameters

​Optional parameters

​Notes

Authorizations

Body

Response

Models

Input modes

Text to Video

Image to Video

Reference to Video

Required parameters

Optional parameters

Notes