HappyHorse 1.0 API
Highest stability with guaranteed 99.9% uptime. Recommended for production environments.
Use the same API endpoint for all versions. Only the model parameter differs.
HappyHorse 1.0 API: Video Generation, Pricing, and Integration
HappyHorse 1.0 topped the Artificial Analysis Text-to-Video Leaderboard in April 2026, above Seedance 2.0 and Kling 3.0. EvoLink will provide API access with per-second billing and async delivery.
About HappyHorse 1.0
HappyHorse 1.0 is a video generation model that reached the top position on the Artificial Analysis Text-to-Video Leaderboard (No Audio) in April 2026. It supports text-to-video and image-to-video generation, with community reports indicating multilingual audio synthesis and resolutions up to 1080p.
Official pricing, API endpoints, and documentation are not yet public. EvoLink is preparing to offer HappyHorse through the same unified API gateway used for Seedance 2.0, Kling 3.0, Sora 2, and Veo 3.1 — one API key, one billing system, no additional vendor accounts.
HappyHorse 1.0 API technical capabilities
Known and expected capabilities based on public leaderboard data and community reports
Text-to-Video
Generate video from text descriptions. HappyHorse ranked #1 for text-to-video quality on the Artificial Analysis leaderboard, above Seedance 2.0 and Kling 3.0.
Image-to-Video
Animate still images into video clips with natural motion. Community benchmarks indicate strong subject preservation and smooth transitions.
Multilingual Audio
Community reports indicate support for synchronized audio generation in 6+ languages, including dialogue lip-sync. Not yet officially confirmed.
Per-Second Billing
EvoLink will offer HappyHorse with per-second billing, giving teams precise cost control. Exact rates will be published when the model launches.
Async Task Delivery
Production-ready async task handling with status tracking and webhook callbacks. The same delivery pattern used for all video models on EvoLink.
OpenAI SDK Compatible
Use existing OpenAI SDK integrations with minimal code changes. Just update the base URL and model parameter to route to HappyHorse.
HappyHorse 1.0 API capabilities
Text-to-Video Generation
HappyHorse 1.0 generates video from text prompts. On the Artificial Analysis leaderboard, it scored higher than Seedance 2.0 720p and Kling 3.0 in text-to-video quality. Describe scenes, motion, and style in natural language to produce clips for marketing, social content, or creative projects.
Image-to-Video Generation
HappyHorse 1.0 also supports image-to-video generation, turning still images into animated video clips. Community benchmarks show strong performance in preserving subject identity and adding natural motion to reference images.
Unified API Access via EvoLink
When HappyHorse launches, access it through the same EvoLink API endpoint used for Seedance 2.0, Kling 3.0, Sora 2, and 40+ other models. One API key, one billing system, and the same async task delivery pattern you already use.
How HappyHorse 1.0 compares to other video models on EvoLink
HappyHorse 1.0 leads the Artificial Analysis leaderboard, but each model has different strengths. Here is how it fits alongside the video models already available on EvoLink.
HappyHorse vs Seedance 2.0
HappyHorse 1.0 scored higher than Seedance 2.0 720p on the Artificial Analysis text-to-video leaderboard. Seedance 2.0 currently offers the @-reference system with up to 9 image + 3 video + 3 audio references and video-to-video editing — features not yet confirmed for HappyHorse. Choose Seedance 2.0 if you need reference-driven control now.
HappyHorse vs Kling 3.0
HappyHorse 1.0 also ranked above Kling 3.0 on the same leaderboard. Kling 3.0 is a strong choice for repeatable short-form prompt-first production at $0.075/s. When HappyHorse pricing becomes public, teams will be able to compare cost-per-second directly.
Why route through EvoLink
When HappyHorse launches on EvoLink, teams can add it to their existing workflow without a new vendor account, a new billing path, or a new integration. Switch between HappyHorse, Seedance, Kling, and Sora with one model parameter change.
How to integrate HappyHorse API through EvoLink
The same three-step integration used for every video model on EvoLink.
Get your API key
Sign up on EvoLink and create an API key from your dashboard. Free credits are included with every new account — use them to test HappyHorse when it launches.
Submit a generation task
Send a POST request to /v1/videos/generations with your text prompt or image reference. The API returns a task ID for async tracking. The same endpoint and request format used for Seedance, Kling, and Sora.
Retrieve your video
Poll the task status endpoint or configure a webhook callback. Once complete, download your video file. Iterate on prompts using the same API structure for fast production cycles.
HappyHorse 1.0 vs Seedance 2.0 vs Kling 3.0
Pre-launch comparison based on Artificial Analysis leaderboard data and publicly available information.
| HappyHorse 1.0 | Seedance 2.0 | Kling 3.0 | |
|---|---|---|---|
| Artificial Analysis Ranking | #1 | #2 | Lower |
| Text-to-Video | ✓ | ✓ | ✓ |
| Image-to-Video | ✓ | ✓ | ✓ |
| Video-to-Video Editing | Unconfirmed | ✓ | — |
| Native Audio | Reported (6+ languages) | ✓ (multi-language lip-sync) | — |
| @-Reference System | Unconfirmed | ✓ (9 img + 3 vid + 3 audio) | — |
| API Pricing | Coming soon | Per-second (from $0.025/s) | Per-second ($0.075/s) |
| API Availability | Coming soon | Live on EvoLink | Live on EvoLink |
HappyHorse API FAQ
Everything you need to know about the product and billing.