Video Official partner

Happy Horse 1.1 API

Reference-driven video at a workhorse price.

The upgrade to Happy Horse: text-to-video, image-to-video, and reference-to-video from up to 9 images, with stronger motion and character consistency. One API, async jobs, and webhooks.

Get API key Read the docs

1080p
Max resolution: 9
Reference images: 15s
Max clip length: 18 credits/s
From

Video · example

Playground

Try Happy Horse 1.1 right here.

model: happyhorse-1.1

Prompt

Aspect ratio Duration Resolution

Aspect ratio

Media inputs

Input images

Advanced settings

Seed

Estimated cost 144–176 credits · $1.44–$1.76 Generate in Studio

Output Example

Vertical close-up of rust-colored glaze dripping from a brush onto a spinning ceramic bowl, sunlit studio, soft brush sounds and wheel hum, photoreal.

Capabilities

What's new in Happy Horse 1.1.

Three modes, one model

No images runs text-to-video, one image runs image-to-video, and two to nine images run reference-to-video.

Reference up to 9 images

Keep characters, products, and scenes consistent, refer to them in the prompt as [Image 1], [Image 2], and so on.

Smoother motion and synced audio

Improved motion expressiveness and temporal consistency, with audio synchronized to the action.

Showcase

See what Happy Horse 1.1 can create.

Real outputs generated with Happy Horse 1.1 on Apiframe, each with the prompt behind it.

Try Happy Horse 1.1

Vertical close-up of rust-colored glaze dripping from a brush onto a spinning ceramic bowl, sunlit studio, soft brush sounds and wheel hum, photoreal.

A wood-fired kiln door opening in a pottery studio, orange glow spilling out, heat shimmer, bowls stacked inside, crackle and low roar, photoreal.

Finished rust-glaze ceramic bowls on a raw cedar shelf in morning window light, slow lateral drift, quiet studio, distant birdsong, photoreal.

Close-up of clay-covered hands wedging a lump of clay on a wooden table in a sunlit pottery studio, kneading rhythm, soft ambient studio sound, photoreal.

A ceramicist shaping a bowl on a spinning wheel in a sunlit studio, clay-covered hands, gentle wheel hum and ambient birdsong, slow top-down orbit, photoreal.

Pricing

Simple per-second pricing.

18–22 credits per second of output ≈ $0.18–$0.22

The rate depends on the resolution and options you pick.

A 9s clip runs 162–198 credits (≈ $1.62–$1.98).

You only pay for successful generations. Failed jobs are refunded automatically.
One credit balance across every model on Apiframe, no per-model plans.
Start with free credits. No subscription required.
Volume discounts on larger plans.

See plans and credit packs API pricing Happy Horse 1.1 credit cost and rates

Specs

At a glance.

Provider Alibaba

Model ID happyhorse-1.1

Aspect ratios 16:9, 9:16, 1:1, 4:3, 3:4

Resolutions 720p, 1080p

Durations 3s, 4s, 5s, 6s, 7s, 8s, 9s, 10s, 11s, 12s, 13s, 14s, 15s

Image input Supported

Audio Supported

Avg. time ~115s

Comparison

Happy Horse 1.1 vs Wan 2.7 vs Seedance 2.0

Happy Horse 1.1 against Alibaba's other video line and the ByteDance flagship. All official-partner models on Apiframe.

Feature	Happy Horse 1.1	Wan 2.7	Seedance 2.0
Reference inputs	Up to 9 images	First/last frame + clip chaining	Up to 15 (9 img, 3 vid, 3 audio)
Max resolution	1080p	1080p	Native 4K
Max clip length	15s	15s	15s
Native audio	Synced, built in	Optional, synced	Co-generated, optional
Price from	18 credits/s (≈$0.18)	12 credits/s (≈$0.12)	8 credits/s (≈$0.08)
Best for	Reference-pinned social & product video	Chained sequences and FLF control	4K reference-driven ads

Specs reflect what each model supports on Apiframe today, from the live catalog.

Quickstart

How to call the Happy Horse 1.1 API.

Send one POST /v2/videos/generate request with your API key. The call returns a jobId you can poll, or pass a webhook_url and the result is pushed to you the moment it's ready.

Swap happyhorse-1.1 for any other model and nothing else changes.

Get API key Read the docs

generate.js

const response = await fetch("https://api.apiframe.ai/v2/videos/generate", {
  method: "POST",
  headers: {
    "X-API-Key": "afk_your_api_key_here",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "prompt": "a cinematic sunrise over a futuristic cityscape, smooth camera push-in",
    "model": "happyhorse-1.1",
    "happyhorse11Params": {
      "images": [
        "https://example.com/input.jpg"
      ],
      "resolution": "1080p",
      "aspect_ratio": "16:9",
      "seed": 1
    }
  }),
});
const { jobId } = await response.json();
console.log(jobId);

import requests

response = requests.post(
    "https://api.apiframe.ai/v2/videos/generate",
    headers={
        "X-API-Key": "afk_your_api_key_here",
        "Content-Type": "application/json",
    },
    json={
        "prompt": "a cinematic sunrise over a futuristic cityscape, smooth camera push-in",
        "model": "happyhorse-1.1",
        "happyhorse11Params": {
            "images": [
                "https://example.com/input.jpg"
            ],
            "resolution": "1080p",
            "aspect_ratio": "16:9",
            "seed": 1
        }
    },
)
print(response.json())  # { "jobId": "...", "status": "QUEUED" }

curl -X POST https://api.apiframe.ai/v2/videos/generate \
  -H "X-API-Key: afk_your_api_key_here" \
  -H "Content-Type: application/json" \
  -d '{
        "prompt": "a cinematic sunrise over a futuristic cityscape, smooth camera push-in",
        "model": "happyhorse-1.1",
        "happyhorse11Params": {
            "images": [
                "https://example.com/input.jpg"
            ],
            "resolution": "1080p",
            "aspect_ratio": "16:9",
            "seed": 1
        }
    }'

let job;
do {
  await new Promise((r) => setTimeout(r, 2000));
  job = await fetch("https://api.apiframe.ai/v2/jobs/JOB_ID", {
    headers: { "X-API-Key": "afk_your_api_key_here" },
  }).then((r) => r.json());
} while (job.status !== "COMPLETED" && job.status !== "FAILED");
console.log(job.result);

import requests, time

while True:
    job = requests.get(
        "https://api.apiframe.ai/v2/jobs/JOB_ID",
        headers={"X-API-Key": "afk_your_api_key_here"},
    ).json()
    if job["status"] in ("COMPLETED", "FAILED"):
        break
    time.sleep(2)
print(job["result"])

curl https://api.apiframe.ai/v2/jobs/JOB_ID \
  -H "X-API-Key: afk_your_api_key_here"

Input schema

Every field Happy Horse 1.1 accepts, with types and defaults. The full reference lives in the docs.

Field	Type	Description
prompt required	string	Text description of what to generate.
model required	string	The model identifier for this endpoint. Default:"happyhorse-1.1" · "happyhorse-1.1"
happyhorse11Params.images	string[] (URLs)	None = text-to-video, one = image-to-video, two to nine = reference-to-video.
happyhorse11Params.resolution	string	Resolution Default:"1080p" · "720p", "1080p"
happyhorse11Params.aspect_ratio	string	Used for text-to-video (and reference-to-video on 1.1); ignored when animating an image. Default:"16:9" · "16:9", "9:16", "1:1", "4:3", "3:4"
happyhorse11Params.seed	number	Reuse a number to reproduce the same result. step 1

Happy Horse versions

Every Happy Horse video model on Apiframe. Switch with one parameter.

Use cases

What teams build with Happy Horse 1.1.

Reference-to-video

Up to 9 reference images pin a character, product, or style in one request, the feature that usually costs flagship money, at a mid-tier rate.

Clips that ship with sound

Every clip arrives with synchronized audio generated in the same pass, no separate scoring step for social and product video.

Volume social content

Five aspect ratios, 3 to 15-second durations, and per-second pricing from 18 credits make it the sensible default for high-volume feeds.

E-commerce listings

Turn product stills into moving listing assets at 720p or 1080p, keeping the exact product appearance via references.

Reviews

9,800+ developers. One API.

Real Apiframe reviews from Trustpilot and G2.

Seamless experience, excellent support

Just created 6 videos and the experience has been seamless. Wanted to write a review for appreciation — the customer support has also been excellent. They helped me in some process I was stuck in.

Vaibhav Sharma July 2026 Trustpilot

Stable, easy image & video generation

I like that I can generate images and videos without complicated setup. It works stable and is easy to use even if you are not a big developer. It saves me time and makes the whole process much simpler.

Anakin S. July 2026 G2

Honestly the best AI API

They got every engine possible and it's great to have them all in one place.

Daniel Zborowski July 2026 Trustpilot

Happy Horse 1.1 questions

What teams ask before shipping with Happy Horse 1.1. Everything else lives in the docs.

How is the generation mode chosen?

It depends on the number of images you pass in happyhorse11Params.images: none = text-to-video, one = image-to-video, two to nine = reference-to-video.

How do reference images work?

Pass up to nine images and mention them in the prompt as [Image 1], [Image 2], etc. Happy Horse 1.1 keeps those subjects and scenes consistent in the output.

What does Happy Horse 1.1 cost?

Pricing is per second of output: 18 credits/second at 720p and 22 credits/second at 1080p. A 10-second 1080p clip is 220 credits.