Video Image to Video fal.ai

Happy Horse 1.1 I2V

Happy Horse 1.1 I2V costs $0.0000/clip on FairStack — a image to video model for Audio-rich animation, Multilingual content, Premium image-to-video. No subscription required. Pay per generation with full REST API access. FairStack applies a transparent 20% margin on infrastructure cost so you always see the real price.

FairStack price

$0.0000/clip

Try Happy Horse 1.1 I2V API Quickstart Last updated 2026-06-27

What is Happy Horse 1.1 I2V?

Key Features

Native audio + Foley

Multilingual lipsync

Up to 1080p

What are Happy Horse 1.1 I2V's strengths?

Top fal ranking

Rich native audio

Multilingual lipsync

What are Happy Horse 1.1 I2V's limitations?

1080p doubles cost

Newer model

What is Happy Horse 1.1 I2V best for?

Audio-rich animation Multilingual content Premium image-to-video

How much does Happy Horse 1.1 I2V cost?

Metric

FairStack

Details

Price per generation

$0.0000

Includes 20% margin

Subscription

None

Pay per generation only

How does Happy Horse 1.1 I2V perform across capabilities?

Happy Horse 1.1 i2v — fal #1

motion quality

90%

visual quality

90%

prompt adherence

85%

temporal coherence

88%

audio quality

90%

lipsync accuracy

86%

How do I use the Happy Horse 1.1 I2V API?

curl

curl -X POST https://api.fairstack.ai/v1/generations/video \
  -H "Authorization: Bearer $FAIRSTACK_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "happy-horse-1-1-i2v",
    "prompt": "Your prompt here"
  }'

Python

import requests

response = requests.post(
    "https://api.fairstack.ai/v1/generations/video",
    headers={
        "Authorization": f"Bearer {FAIRSTACK_API_KEY}",
        "Content-Type": "application/json",
    },
    json={
        "model": "happy-horse-1-1-i2v",
        "prompt": "Your prompt here",
    },
)

result = response.json()
print(result["url"])

Node.js

const response = await fetch(
  "https://api.fairstack.ai/v1/generations/video",
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.FAIRSTACK_API_KEY}`,
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      model: "happy-horse-1-1-i2v",
      prompt: "Your prompt here",
    }),
  }
);

const result = await response.json();
console.log(result.url);

What parameters does Happy Horse 1.1 I2V support?

Parameter

Type

Default

Details

resolution

enum

720p

Options: 720p, 1080p

duration

integer (optional)

negative_prompt

string (optional)

—

seed

integer (optional)

—

Frequently Asked Questions

How much does Happy Horse 1.1 I2V cost?

Happy Horse 1.1 I2V costs $0.0000/clip on FairStack as of 2026-06-27. This price includes FairStack's transparent 20% margin on infrastructure cost. No subscription or monthly fee — you pay per generation only. Minimum deposit is $1.

What is Happy Horse 1.1 I2V and what is it best for?

Happy Horse 1.1 is Alibaba's #1-ranked video model on fal, animating any still image into 1080p video with synchronized native audio, Foley sound, and multilingual lip-sync. 720p at $0.14/s, 1080p at $0.28/s. A top all-rounder when audio and lip-sync quality matter. Happy Horse 1.1 I2V is best for Audio-rich animation, Multilingual content, Premium image-to-video. Available via FairStack's REST API with curl, Python, and Node.js SDKs.

Does Happy Horse 1.1 I2V have an API?

Yes. Happy Horse 1.1 I2V is available via FairStack's REST API at api.fairstack.ai. Send a POST request to /v1/generations/video with your API key and prompt. Works with curl, Python requests, Node.js fetch, and any HTTP client. No SDK installation required.

How does Happy Horse 1.1 I2V compare to other video models?

Happy Horse 1.1 I2V excels at Audio-rich animation, Multilingual content, Premium image-to-video. It is a image to video model priced at $0.0000/clip on FairStack. Key strengths: Top fal ranking, Rich native audio. Compare all video models at fairstack.ai/models.