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Happy Horse 1.0

Overview

HappyHorse 1.0 is an AI video generation product exposed through the HappyHorse API. HappyHorse’s own site describes it as a text-or-image-to-video system for 1080p cinematic clips with motion synthesis and multi-shot storytelling. From a systems point of view, it is the simplest video billing case because the implemented cost function depends only on mode, even though the external product page speaks in richer creative terms.

API base URL

https://happyhorse.app/api/

Example payload

{
  "model": "happyhorse-1.0/video",
  "prompt": "A short cinematic travel clip with warm golden-hour light",
  "mode": "pro",
  "duration": 5,
  "aspect_ratio": "16:9",
  "image_urls": [
    "https://example.com/ref1.jpg"
  ]
}

Our Current Pricing

HappyHorse is the simplest billed video path. The implemented function charges a fixed amount by mode and does not currently use duration, aspect ratio, references, or response usage.

Implemented rate map:

std -> 1.8 USD
pro -> 2.4 USD

Implemented formula:

cost_usd = fixed_price_by_mode[mode]

The correct strategy is therefore to calculate cost from the request before submission and store the chosen mode together with the resolved fixed price. If you later decide that a 10-second generation should cost more than a 5-second one, that is a pricing-policy change and should be versioned as such rather than silently backfilling past records.

Sources