Happy Horse 1.0 is a state-of-the-art open-source AI video generator designed for fast, cinematic content creation. It supports text-to-video and image-to-video workflows, while generating synchronized audio, dialogue, ambient sound, and Foley in a single pass. The model is built on a 15B-parameter unified Transformer with DMD-2 distillation, enabling only 8 denoising steps and rapid 1080p output. It also provides 7-language lip-sync, strong character consistency, and flexible aspect ratios. Users can self-host, fine-tune, and use generated output commercially, making it suitable for both independent creators and enterprise teams.