Happy Horse

Happy Horse 1.0 is an advanced open-source AI video generation model built to produce high-quality 1080p videos complete with synchronized audio and multilingual lip-sync. Whether you are producing professional video content or localized materials for global audiences, it turns simple text or image prompts into polished, ready-to-use footage.

Developed by the Happy Horse team in 2026, the model is powered by a 15-billion-parameter unified Transformer architecture that jointly generates video frames and their corresponding sound in a single pass. This unified design keeps visuals and audio naturally in step, so you spend less time patching together separate tools.

Everything is fully open-source, including the model weights and inference code, and it is designed for self-hosting with full commercial-use rights. That means you can run it on your own infrastructure, keep control of your data and workflows, and build commercial projects without licensing headaches.

At its core sits a unique 40-layer self-attention network that ensures stable training and cinematic output quality. For professional video production and localized content creation, Happy Horse offers a powerful, dependable foundation you can tune to your own needs.