If you've been waiting for an AI video generation API that's actually production-ready and not just a demo page, HappyHorse 1.0 just shipped.
Alibaba released public API access to HappyHorse 1.0 on April 27, 2026. It's the model that topped Video Arena's blind testing rankings, and it comes with four distinct endpoints covering text-to-video, image-to-video, reference-based generation, and natural language video editing.
Here's what you need to know to start building with it today.
The Four Endpoints
happyhorse-1.0-t2v (Text-to-Video)
Pure text prompt to video. No reference images needed. This is your starting point for most creative generation tasks.
Pricing: 720P at 0.9 RMB/second, 1080P at 1.6 RMB/second.
happyhorse-1.0-i2v (Image-to-Video)
Feed it a static image plus a text prompt, and it animates the image with natural motion and camera movement. Strong visual consistency with the source.
Pricing: Same as t2v.
happyhorse-1.0-r2v (Reference-to-Video)
The consistency powerhouse. Supports up to 9 reference images for subject and scene stability across shots. Use this when you need character consistency or precise creative control.
Pricing: Same tier.
happyhorse-1.0-video-edit (Video Editing)
Natural language video editing. Modify existing videos using text instructions and up to 5 reference images. Handles both local and global edits while preserving original motion dynamics.
Pricing: Same tier.
6 Prompt Templates That Actually Work
The difference between mediocre and cinematic output comes down to prompting technique. Here are six patterns I'd recommend starting with.
1. Establishing Shot with Camera Push
An elderly fisherman in a deep blue wool sweater stands at the edge of a stone pier, mending fishing nets. Dusk settles over the bay, a lighthouse visible in the distance. Camera begins wide, then slowly pushes in to medium shot, focusing on his weathered hands. Seagulls circle overhead. Hyperrealistic, cinematic.
Start wide, narrow in. Explicit camera direction creates tension.
2. Multi-Shot Action Sequence
Shot 1: Side tracking shot, dirt bike rider launches off earthen ramp, slow motion. Shot 2: Low angle, motorcycle clears rusted school bus, sun behind rider. Shot 3: Landing, suspension compresses, mud splashes toward camera. Gritty texture, sun-bleached color grade.
Number each shot explicitly. HappyHorse transitions between them automatically within a single generation.
3. Portrait with Micro-Movements
Close-up, woman with copper hair and freckles, direct eye contact. Soft window light from the left. She blinks, corner of her mouth lifts slightly, an autumn leaf drifts past her cheek. Shallow depth of field, subtle film grain.
For portraits, specify micro-movements. The model excels at controlled, subtle motion.
4. Anime Style
Anime style. Female student in navy uniform on rooftop at sunset, wind lifting her hair. Camera orbits from rear view to profile. Cherry blossom petals drift across frame. Soft cel-shaded colors, crisp linework.
Lead with style declaration. The model maintains 2D aesthetic consistency without collapsing into 3D.
5. Product Commercial
15-second product ad. Shot 1: Extreme close-up, water droplets on matte black running shoe, slow motion. Shot 2: Runner on wet urban street at dawn, side tracking. Shot 3: Product hero shot, shoe rotates on white pedestal, soft rim lighting. Clean, premium aesthetic.
Commercial structure: detail, action, hero. Abstract direction like "premium aesthetic" translates well.
6. Environmental Atmosphere
Vast salt flat, blue hour, cracked white surface to flat horizon. Single figure walks toward camera from 100 meters, silhouetted against sunset. Wind kicks up dust haze. Camera low angle, static. Cool cyan shadows, warm coral at horizon. Hyperrealistic, anamorphic widescreen.
When environment is the protagonist, establish the world first, then introduce the figure.
Image-to-Video: 6 Techniques
- Describe action, not the image. The model sees your reference. Write only what happens next.
- Use clean source images. Sharp focus, good lighting. The model preserves detail but inherits defects.
- Pre-crop to target aspect ratio. 16:9, 9:16, or 1:1 before upload.
- Specify camera language. "Slow push in" beats "make it move."
- Use I2V for character consistency. Generate the still in an image model first, then animate.
- Shorter duration = greater stability. 5 seconds is the sweet spot for living photo results.
Getting Started
HappyHorse 1.0 is available through EvoLink, providing API access for developers and creators worldwide.
Video Arena's top-ranked model is now production-ready. If you've been building with video generation APIs and hitting quality ceilings, this is worth evaluating.
What video generation use cases are you working on? Drop a comment below.
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