# What runs today

> What the UserBus closed beta runs today: one experimental model integration, what you can ask of it, and what comes back.
>
> HTML version: https://userbus.com/capabilities/

UserBus is a video-generation platform in closed beta. The beta runs one experimental model integration, for technical testing. The models for a commercial launch are still being evaluated and none has been selected. The rule stays the same whatever the model: you name a cap per finished second, and the cheapest idle machine at or under it makes the clip.

## In the closed beta: an experimental integration

What you can ask of it in Studio, and what comes back:

**Length**: 4–15 whole seconds, at 24 frames per second

**Shape**: 1344×768, 1024×576 or 864×480. Landscape only; portrait is not supported yet.

**Detail**: 4, 8, 12, 20 or 50 steps. Studio starts at 8.

**Variation**: A seed you choose, or one the server picks for each job

**Prompt**: Text, up to 1,000 characters in Studio. No negative prompt.

**Output**: An MP4 with stereo sound

These are the limits of the beta integration, not a promise about the model a commercial launch will use. We make no claim about its output quality or speed.

[Invited? Open Studio](https://studio.userbus.com/) [How the bus runs](https://userbus.com/how-it-works/)