Runway 发布 GWM Worlds 2 与 WorldPrompt 实时世界模型
原标题：Runway’s WorldPrompt and the Engineering of Real-Time Worlds
AI 摘要
Runway 推出 GWM Worlds 2 研究预览版，将高保真视频与音频生成转变为实时交互式模拟，并引入 WorldPrompt 输入格式用于指定生成世界及其中动作。该模型采用自回归扩散架构，通过微调、后训练和蒸馏实现 720p/24fps 视频与 48kHz 音频的实时流式生成。Runway CTO 与首席研究科学家在采访中讨论了 WorldPrompt 的控制能力、与 Genie 3 等竞品的差异，以及误差累积、无限生成和长期记忆等工程挑战。
正文节选
Earlier this month, world model company Runway introduced GWM Worlds 2, a research preview that “turns high-fidelity video and audio generation into real-time interactive simulation.” Runway calls this an “autoregressive diffusion” model; with autoregressive describing how it generates over time. One new feature in particular caught our eye: WorldPrompt, a proposed input format for specifying a generated world and the actions within it. It allows you to fix some aspects of a simulated environmen