HappyHorse is an open-source AI video and image generation platform built for creating high-quality cinematic content quickly. It offers text-to-video and image-to-video workflows, unified audio-video generation, and native lip-sync across seven languages. The model supports 1080p to 2K output, fast 8-step inference, batch generation, and commercial use on paid tiers. It also provides a large prompt library, style diversity, and API access for advanced workflows.