How much does the Happy Horse 1.0 API cost?

Happy Horse 1.0 API pricing is per-second × resolution. 720P costs $0.1625 per second and 1080P costs $0.2875 per second. EDIT mode uses the same rates, and routing mode never changes the price.

Which mode does the Happy Horse 1.0 API pick for my request?

Routing priority is video_url > first_frame_image > image_urls > prompt-only. The three media fields are mutually exclusive in pairs; the only legal combination is video_url + image_urls (EDIT mode with up to 5 style references).

What resolutions and durations does the Happy Horse 1.0 API support?

The Happy Horse 1.0 API supports 720P and 1080P. Duration is any integer from 3 to 15 seconds (default 5). In EDIT mode the output length matches the source video, so the duration parameter is ignored.

Can the Happy Horse 1.0 API keep the source audio in edit mode?

Yes. Pass audio_setting=origin to retain the source soundtrack; audio_setting=auto regenerates audio. The Happy Horse 1.0 API only honors audio_setting when video_url is set.

How long can a Happy Horse 1.0 API video be?

Output length is 3 to 15 seconds. Source videos longer than 15 seconds in EDIT mode are auto-truncated from 0 to 15s upstream — slice the input first if you need a later segment.

Where is the full Happy Horse 1.0 API reference?

The full Happy Horse 1.0 API parameter list, error codes, and runnable cURL examples live at /docs/happyhorse-1-0.

Happy Horse 1.0 API — Text, Image & Video Edit in One Endpoint

One Happy Horse 1.0 API call covers text-to-video, image-to-video, reference video, and video edit. 720P or 1080P, 3 to 15 seconds, native audio in edit mode.

Model type:

Price

est$0.163– $0.288per second

Default routing. Per-second rate applies as listed.

Same API endpoint. The model parameter selects the variant.

Try Happy Horse 1.0 View API docs

01playground

InputsPOST /api/v1/videos/generations

Prompt*

≤ 2500 chars · optional in image-to-video mode

Resolution

Default 1080P

Aspect ratio

Ignored in image-to-video and edit modes

Duration (seconds)5

3 to 15 · ignored in edit mode

Watermark

Default off

Seed

[0, 2147483647] · same seed ≈ similar output

Outputidle

try one of these prompts

02use cases

What you can build

Real workflows powered by this model.

01/case

Animate any photo with the Happy Horse 1.0 API

Pass a first-frame image and a motion prompt. The Happy Horse 1.0 API returns a 3 to 15 second clip from the same endpoint as your text-to-video calls — no model swap.

Generate a clip

02/case

Compose fresh scenes from reference images

Send 1 to 9 reference images alongside a prompt. The Happy Horse 1.0 API fuses subject, style, and props into a brand-new scene — product shots, character reskins, stylized social posts.

03/case

Restyle existing footage without re-shooting

Pass video_url to the Happy Horse 1.0 API and the source motion stays intact — only the look changes. Combine with up to 5 style images and audio_setting=origin to keep the original soundtrack.

03pricing

Pricing

Credit-based — 1 credit = $0.001 USD. Pay only for completed generations.

Mode	Category	Unit	Price
happyhorse-1.0
└	720P	1 second	$0.163 163 credits
└	1080P	1 second	$0.288 288 credits

05why

Why reAPI

One endpoint, four modes

The Happy Horse 1.0 API auto-routes T2V, I2V, R2V, and EDIT by request shape. Routing priority is video_url > first_frame_image > image_urls > prompt-only. No model swap, no second integration.

Pricing by resolution × seconds

The Happy Horse 1.0 API charges $0.1625 per second at 720P and $0.2875 per second at 1080P. Mode does not change the rate, and failed jobs refund automatically.

Native audio in edit mode

Set audio_setting=origin to retain the source soundtrack or auto to regenerate audio. The Happy Horse 1.0 API ships voiced clips without a separate TTS step.

06quickstart

Ship the Happy Horse 1.0 API in three steps

step 01
Create an API key
Sign up and grab a key from the dashboard. Free credits cover your first Happy Horse 1.0 API calls — no card required.
Open
step 02
Submit a video task
POST to /api/v1/videos/generations with model = happyhorse-1.0. The Happy Horse 1.0 API returns a task ID immediately.
Open
step 03
Poll the result
GET /api/v1/tasks/:id until status is completed. Download the Happy Horse 1.0 video and ship it.
Open

07faq

Frequently asked questions

Common questions about this model.

The Happy Horse 1.0 API is Alibaba Cloud Bailian's unified video generation endpoint. One model id (happyhorse-1.0) auto-routes text-to-video, image-to-video, reference-to-video, and video edit based on which fields the request carries.

09api reference

docs/api/happyhorse-1-0

API reference

Drop-in code and the full parameter table.

View full reference

POST /api/v1/videos/generations
Authorization: Bearer $REAPI_API_KEY
Content-Type: application/json

{
  "prompt": "..."
}

start building

Ready to ship?

Try it in the playground or grab an API key to integrate now.

Try Happy Horse 1.0 Get API key