HappyHorse

Name: HappyHorse API
Brand: Alibaba

by AlibabaVideo

Text- and image-to-video generation with clear per-second billing.

View examples API reference

InputPrompttext

Models7available

FlowAsyncresult URL

Price8.4 quotaper second

Example clipVideo preview

5s preview

Examples

Prompt to video, in context

Example inputhappyhorse-1.1-t2v

Prompt

slow dolly shot through a lantern-lit alley

Resolution: 720P
Duration: 5s

Example resultExample output

Lantern alley shot

A slow, stable dolly through a misty alley with warm lantern parallax.

Capabilities

What you can build with HappyHorse

Prompt driven generation

Submit a concise prompt and get production-ready video output through one TTAPI job.

Core controls only

Keep integration simple with prompt, model, output settings, and callback handling.

Async result flow

Use polling or webhook callbacks so long-running generations do not block your UI.

Ready for product UI

Return HappyHorse results that can be displayed, stored, or passed into downstream workflows.

Pricing

Per-action, in quota

Usage is metered in quota by model, action, and output settings.

Video generationOfficial pricing

OutputStarting priceUnit

720P8.4 quota/ second

1080P14.4 quota/ second

API request

Headers and submit parameters

Use the endpoint below with your TTAPI key and the request fields shown.

Text to videoPOST

/happyhorse/api/v1/services/aigc/video-generation/video-synthesis

Generate video from a text prompt.

Official reference

FetchGET

/happyhorse/api/v1/tasks/{task_id}

Retrieve a HappyHorse task result.

Official reference

POSThttps://api.ttapi.io/happyhorse/api/v1/services/aigc/video-generation/video-synthesis

Headers

TT-API-KEYstringrequired

Your TTAPI API key.

Content-Typestringrequired

Use application/json.

Body

modelstringrequired

HappyHorse task model such as happyhorse-1.1-t2v.

input.promptstringconditional

Text prompt for generation or editing.

input.mediaobject[]conditional

First-frame image, reference images, or source video for the selected workflow.

parameters.resolutionenumoptional

720P or 1080P output.

parameters.durationintegeroptional

Clip duration in seconds.

parameters.ratioenumoptional

Output aspect ratio for supported workflows.

parameters.watermarkbooleanoptional

Whether to include the HappyHorse watermark.

parameters.seedintegeroptional

Random seed from 0 to 2147483647.

Open the official TTAPI documentation

Integrate

From key to first result

Copy the resolved endpoint, authentication headers, and request body for this model.

curl --request POST \
  --url https://api.ttapi.io/happyhorse/api/v1/services/aigc/video-generation/video-synthesis \
  --header 'TT-API-KEY: $TTAPI_KEY' \
  --header 'Content-Type: application/json' \
  --data '{"model":"happyhorse-1.1-t2v","input":{"prompt":"slow dolly shot through a lantern-lit alley"},"parameters":{"resolution":"720P","duration":5,"watermark":false}}'