A 2D generative video model from Alibaba's ATH Innovation Division, sibling to the Happy Oyster world model.

How is Happy Horse different from Happy Oyster?

Happy Horse outputs flat video clips you watch. Happy Oyster outputs 3D worlds you can re-enter and explore.

Can I use Happy Horse today?

Yes, public access is available via tryhappyhorse.xyz; pricing tiers are still being finalized.

Alibaba ATH Innovation Division vs Kuaishou

Happy Horse vs Kling AI

Happy Horse (2D-first generative video model) compared to Kling AI (High-quality AI video generation model by Kuaishou.).

Happy Horse and Kling AI target adjacent jobs but take different approaches. This page compares them side by side on output paradigm, access, capabilities, and positioning — based on vendor-stated claims as of 2026-04-20 / 2026-04-21.

At a Glance

Alibaba ATH Innovation Division

Happy Horse

2D-first generative video model

Same Alibaba ATH lineage as Happy Oyster, but optimized for flat-video output
Image-to-video with motion-control on top, not just text-to-video
Public access already open, ahead of Happy Oyster's general availability

See Happy Horse details →

Kuaishou

Kling AI

High-quality AI video generation model by Kuaishou.

Utilizes a self-developed 3D Variational Autoencoder (VAE) for synchronous spatiotemporal compression [1.1].
Natively generates multi-lingual, lip-synced audio from text without requiring separate audio files.
Features a unique 'Element' system allowing users to upload up to 4 reference elements to maintain character and object consistency.

See Kling AI details →

How They Compare

Dimension	Happy Horse	Kling AI
Modality	text-to-video, image-to-video	text-to-video, image-to-video, text-to-image
Release status	public (2026-03-10)	ga (2024-06-10)
Capabilities	Text to Video · Image to Video · Motion Control · Multi-shot Continuity	Text-to-Video Generation · Image-to-Video Generation · Multi-lingual Lip Sync · Cinematic Camera Movements
Output type	2D video clips	—
Max clip length	Not officially documented	—
Resolutions	720p / 1080p tiers reported	—
API	Public access via tryhappyhorse.xyz	—
Pricing	Tiered, details not finalized	—
Max Resolution	—	4K Ultra HD [1.8]
Frame Rate	—	30fps to 60fps
Free Tier	—	66 daily credits
Architecture	—	Diffusion-based Transformer (DiT) / Multi-modal Visual Language (MVL)

Which Should You Choose?

Pick Happy Horse if you need: Same Alibaba ATH lineage as Happy Oyster, but optimized for flat-video output.
Pick Kling AI if you need: Utilizes a self-developed 3D Variational Autoencoder (VAE) for synchronous spatiotemporal compression [1.1]..
Both come from different vendors — consider your existing stack.