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Video Image to Video Kie.ai

HappyHorse 1.0 Reference-to-Video

HappyHorse 1.0 Reference-to-Video 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 Reference-to-Video 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 Reference-to-Video 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-r2v",
    "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-r2v",
      "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-r2v",
    "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 Reference-to-Video 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 Reference-to-Video cost?

HappyHorse 1.0 Reference-to-Video 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 Reference-to-Video and what is it best for?

HappyHorse 1.0 Reference-to-Video 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 Reference-to-Video have an API?

Yes. HappyHorse 1.0 Reference-to-Video 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 Reference-to-Video compare to other video models?

HappyHorse 1.0 Reference-to-Video 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 Reference-to-Video today

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

Start Creating