HappyHorse AI is a browser-based AI video generator built around the HappyHorse 1.0 model. It converts prompts, still images, or short video references into cinematic clips with natural motion and strong scene continuity. Users can choose duration, aspect ratio, and resolution, then export HD videos for ads, social content, product showcases, storyboards, and concept previews. Flexible credit plans, commercial-use options, and fast browser access make it practical for rapid creative iteration.