Happy Horse 1.1 is Alibaba’s next-gen AI video generation engine that solves the problem of disconnected video and audio workflows by delivering hyper-realistic, physics-compliant video with native synchronized audio in a single pass using a unified Transfusion framework.

What makes it different: Unlike traditional text-to-video tools that generate silent images first and rely on external audio engines, Happy Horse 1.1 models text, video, and audio simultaneously, ensuring perfect audio-visual synchrony.

Key Features & Benefits:

- Three generation modes: text-to-video, image-to-video, and reference-to-video (supports up to 9 reference images for consistent character/style)

- Multi-lingual lip-syncing (supports English, Chinese, Vietnamese)

- Auto-generated Foley sound effects (footsteps, ambient wind, background music)

- Fast generation: ~8 denoising steps for 720p/1080p videos (3–15 sec)

- Pays $0.14–$0.18 per video second on fal.ai

Who it’s for & Use Cases:

Creators, e-commerce teams, and filmmakers needing high-volume digital content or complex creative workflows. Ideal for product demos, animated ads, short films, and social media videos.

Try Happy Horse 1.1 now on fal.ai or Alibaba Cloud Model Studio.