What is Happy Horse 1.1 and what is it good for?

Happy Horse 1.1 is Alibaba's video generation model, suited to building video from a text prompt, animating a single image, or combining several reference images into one clip.

How much does Happy Horse 1.1 cost?

You are billed per second of output video: $0.14 at 720p and $0.18 at 1080p. The model defaults to 1080p, so omitting the `resolution` parameter means billing at the dearer rate.

Is a text prompt required?

No. If you supply exactly one image (image-to-video), the prompt is optional. Text-to-video and multi-reference generation both require one.

How do I access Happy Horse 1.1 from inside Iran?

Create an account on Hormouz and generate an API key. Hormouz provides a stable path to Happy Horse 1.1 from inside Iran, with no foreign credit card required.

happyhorse-1.1: image generation model

Happy Horse 1.1 is Alibaba's video model for text-to-video, animating a single image, or building a video from multiple references. Served through Hormouz.

Pricing:: $0.1400 – $0.1800 / sec of output
Type:: video

Happy Horse 1.1 is Alibaba's video generation model, covering three modes: text-to-video, animating a single image as the first frame, and building a video from up to 9 reference images.

Length is adjustable from 3 to 15 seconds and output is 720p or 1080p. Aspect ratio is selectable for text-to-video and reference-to-video; in image-to-video the input image determines it.

Pricing is per second of output video and follows the resolution: $0.14/second at 720p and $0.18/second at 1080p. Omit the resolution and the model runs at 1080p.

On Hormouz, Happy Horse 1.1 runs as an asynchronous prediction job and is reachable from inside Iran with no foreign credit card required.

Quickstart

# Create the prediction, then poll until succeeded
curl -s https://api.hormouz.net/v1/predictions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"version":"alibaba/happyhorse-1.1","input":{"prompt":"A beautiful sunset"}}'

Specs

Vendor	Alibaba
Type	Video
Context window	—
Pricing	$0.1400 – $0.1800 / sec of output
API	predictions

Code example

cURL

# Create the prediction, then poll until succeeded
curl -s https://api.hormouz.net/v1/predictions \
  -H "Authorization: Bearer ng-YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"version":"alibaba/happyhorse-1.1","input":{"prompt":"A beautiful sunset"}}'

Python

import requests
BASE = "https://api.hormouz.net/v1"
H = {"Authorization": "Bearer ng-YOUR_API_KEY", "Content-Type": "application/json"}
r = requests.post(f"{BASE}/predictions", headers=H,
    json={"version": "alibaba/happyhorse-1.1", "input": {"prompt":"A beautiful sunset"}})
print(r.json()["id"])

JavaScript

const BASE = "https://api.hormouz.net/v1";
const res = await fetch(`${BASE}/predictions`, {
  method: "POST",
  headers: { Authorization: "Bearer ng-YOUR_API_KEY", "Content-Type": "application/json" },
  body: JSON.stringify({ version: "alibaba/happyhorse-1.1", input: {"prompt":"A beautiful sunset"} }),
});
const { id } = await res.json();

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FAQ

What is Happy Horse 1.1 and what is it good for?: Happy Horse 1.1 is Alibaba's video generation model, suited to building video from a text prompt, animating a single image, or combining several reference images into one clip.
How much does Happy Horse 1.1 cost?: You are billed per second of output video: $0.14 at 720p and $0.18 at 1080p. The model defaults to 1080p, so omitting the `resolution` parameter means billing at the dearer rate.
Is a text prompt required?: No. If you supply exactly one image (image-to-video), the prompt is optional. Text-to-video and multi-reference generation both require one.
How do I access Happy Horse 1.1 from inside Iran?: Create an account on Hormouz and generate an API key. Hormouz provides a stable path to Happy Horse 1.1 from inside Iran, with no foreign credit card required.

Updated 2026-10-13