Runway previews real-time video generation: streaming video steered as it is described

Runway published research ('Towards Instant Video Generation') on generating video causally, frame by frame, so users can steer the stream as it is described instead of prompting and waiting; the model is trained on its own imperfect outputs to prevent small errors compounding over long continuations. It builds on GWM-1/Gen-4.5 and Runway says real-time generation cuts per-output GPU cost; no product release timeline announced.