As avaer already mentioned it seems to be a thin wrapper around H3 Max Director, which generates real-time video and takes “natural language directions” that are then relatively seamlessly incorporated into the continuous video stream.

It's like a Choose-Your-Own-Adventure dialed up to 11.

I played around with it briefly on Fal.ai generating a cartoon, but it’s more of a technical curiosity for the time being since I don’t have a Scrooge McDuck vault of gold coins.

The models used are mentioned on the page; primarily it's H3 Max Director, Jev, and an agent to manage context and send updates to Director.