HappyHorse 1.0

Provider	Alibaba
Model name	happyhorse-1-0
Endpoint	/v1/videos
Mode	Text-to-video only
Resolution	720p, 1080p
Duration	3, 5, 8, 10, 15 seconds
Aspect Ratios	16:9, 9:16, 1:1, 4:3, 3:4
Pricing	See HiAPI Pricing

Features

• 1080P HD output
• Flexible duration from 3 to 15 seconds
• Five aspect ratios for landscape, portrait, and square
• Per-second billing
• Best for short-form, ad storyboards, and social media clips

Key Parameters

Parameter	Type	Description
model	string	Fixed to happyhorse-1-0
prompt	string	Subject, motion, environment, and lighting
seconds	string	"3", "5", "8", "10", "15"
resolution	string	"720p" or "1080p"
size	string	"16:9", "9:16", "1:1", "4:3", "3:4"

HappyHorse 1.0 is text-to-video only. Do not send image inputs to this model.

API Usage

cURL

curl -X POST https://api.hiapi.ai/v1/videos \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "happyhorse-1-0",
    "prompt": "A wuxia swordswoman leaps across temple rooftops at dusk, silk robes billowing in slow motion",
    "seconds": "5",
    "resolution": "1080p",
    "size": "16:9"
  }'

Python

import requests

response = requests.post(
    "https://api.hiapi.ai/v1/videos",
    headers={
        "Authorization": "Bearer YOUR_API_KEY",
        "Content-Type": "application/json"
    },
    json={
        "model": "happyhorse-1-0",
        "prompt": "A wuxia swordswoman leaps across temple rooftops at dusk",
        "seconds": "5",
        "resolution": "1080p",
        "size": "16:9"
    }
)

video_id = response.json()["id"]
print(f"Task created: {video_id}")

Node.js

const response = await fetch("https://api.hiapi.ai/v1/videos", {
  method: "POST",
  headers: {
    "Authorization": "Bearer YOUR_API_KEY",
    "Content-Type": "application/json"
  },
  body: JSON.stringify({
    model: "happyhorse-1-0",
    prompt: "A wuxia swordswoman leaps across temple rooftops at dusk",
    seconds: "5",
    resolution: "1080p",
    size: "16:9"
  })
});

const data = await response.json();
console.log("Task ID:", data.id);

Async Polling

Video generation is asynchronous. The POST returns a top-level id. Poll GET /v1/videos/{id} until status is completed, then read the video URL.

curl -X GET https://api.hiapi.ai/v1/videos/video_task_001 \
  -H "Authorization: Bearer YOUR_API_KEY"

Skill

A ready-made local Skill is published for Codex / Claude Code / OpenCode / OpenClaw:

• GitHub: hiapi-happyhorse-1-0-video-skill
• See Skills for installation steps.

Next Steps

• Read the Video Generation guide
• Compare against Seedance 1.5 Pro for cinematic 1080P with native audio
• See the API Reference