GWM Worlds 2

GWM Worlds 2 is a research-stage world model from Runway that generates interactive environments in real time: continuous 720p video at 24 fps with audio at 48,000 Hz, responding to user input as the user explores. It extends GWM Worlds, shown in December 2025, and adds generated audio and richer control over subjects and scenes.

It is built by finetuning Runway's foundational audio-video generation model on a format called WorldPrompt. WorldPrompt has a persistent layer (scene description, subjects, "laws" such as gravity or camera perspective, and a first frame) and a timestamped event stream of free-form text actions addressed to subjects or the scene, plus per-frame camera translation and rotation. The bidirectional model is then post-trained into a real-time autoregressive model, which is not limited to a fixed duration and can generate indefinitely.

Runway positions it for interactive entertainment, virtual characters, robotics and embodied-agent simulation, and generative design. It supports first-person and third-person navigation, and a player and a "director" can act at the same time. It is a research preview; the creator coverage describes access via a contact form, and the pages provided list no pricing or public API for it.