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.…