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Video Image to Video Kie.ai

HappyHorse 1.0 I2V

HappyHorse 1.0 I2V costs $0.288/s (1080p) on FairStack · an image to video model for video generation. 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
$0.288/s
1080p
Platform fee
Flat 20%

How much does HappyHorse 1.0 I2V cost?

Metric
FairStack
Details
1080p(default)
$0.288/s
Billed per second, 20% platform fee included.
720p
$0.168/s
Billed per second, 20% platform fee included.
Subscription
None
Pay per generation only

How do I use the HappyHorse 1.0 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": "happyhorse-1-0-i2v",
    "input": {
      "prompt": "Your prompt here",
      "image_url": "https://example.com/photo.jpg"
    }
  }'
Python
import os
import requests

response = requests.post(
    "https://api.fairstack.ai/v1/generations/video",
    headers={
        "Authorization": f"Bearer {os.environ['FAIRSTACK_API_KEY']}",
        "Content-Type": "application/json",
    },
    json={
      "model": "happyhorse-1-0-i2v",
      "input": {
        "prompt": "Your prompt here",
        "image_url": "https://example.com/photo.jpg"
      }
    },
)

result = response.json()
print(result["data"])
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": "happyhorse-1-0-i2v",
    "input": {
      "prompt": "Your prompt here",
      "image_url": "https://example.com/photo.jpg"
    }
  }),
});

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

What parameters does HappyHorse 1.0 I2V support?

Parameter
Type
Default
Details
duration
integer
5
Range: 3–15
resolution
enum
1080p
Options: 720p, 1080p
aspect_ratio
enum (optional)
16:9
Options: 16:9, 9:16

Frequently Asked Questions

How much does HappyHorse 1.0 I2V cost?

HappyHorse 1.0 I2V costs $0.288/s (1080p) on FairStack as of 2026-11-10. 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 HappyHorse 1.0 I2V and what is it best for?

HappyHorse 1.0 I2V is an image to video AI model available on FairStack for $0.288/s (1080p). It is best for video generation. Access via REST API with full documentation.

Does HappyHorse 1.0 I2V have an API?

Yes. HappyHorse 1.0 I2V is available via FairStack's REST API at api.fairstack.ai. Send a POST request to /v1/generations/video with your API key, the model key, and an input object (input.prompt). Works with curl, Python requests, Node.js fetch, and any HTTP client. No SDK installation required.

How does HappyHorse 1.0 I2V compare to other video models?

HappyHorse 1.0 I2V is an image to video model priced at $0.288/s (1080p) on FairStack. Compare it with other video models at fairstack.ai/models.

Start using HappyHorse 1.0 I2V today

$0.288/s (1080p). Full API access. No subscription.

Start Creating