# Happy Oyster

Happy Oyster builds a world from a paragraph of text in about half a minute, then streams it with sound in real time. Adventure mode lets you walk the world in first person; Directing mode lets you steer the story with text, voice or images.

Organization: Alibaba Cloud Model Studio. Kind: Explorable world.

## What you control

- First-person movement and look (Adventure mode)
- Text, voice or image direction (Directing mode)

## License

Weights: Not published in cited source. Declared license: No public weight license verified.
No weights are published, so there is no model license to use. Commercial use depends on the provider's own service terms.

## Real-time

Real-time, per authors. Real-time audio and video once the world is built.

## Where to try

- [fal](https://fal.ai/happy-oyster)
- [Official](https://www.happyoyster.cn/)
- [Reactor](https://www.reactor.inc/models/happy-oyster)

## Sources

- [Official source](https://www.happyoyster.cn/)

## Questions

### Is Happy Oyster open source?

No. Happy Oyster has no public weights; it is available only as a hosted service or demo.

### Can I use Happy Oyster commercially?

No weights are published, so there is no model license to use. Commercial use depends on the provider's own service terms.

### Does Happy Oyster run in real time?

Yes, according to its authors. Real-time audio and video once the world is built. This directory has not measured it independently.

### Where can I try Happy Oyster?

You can try it on fal, the official site and Reactor.

### What does Happy Oyster take as input?

You give it first-person movement and look (Adventure mode); and text, voice or image direction (Directing mode).

### What are alternatives to Happy Oyster?

Similar models in this directory include ABot-World (open weights, permissive license), AlayaWorld (open weights, custom terms) and DreamX-World (open weights, permissive license).

Checked 2026-10-23. Corrections: https://github.com/windflow-labs/world-model-directory