Praxis-1 Is Now Available

Runway has released Praxis-1, a state-of-the-art world action model for robotics, with open weights under the Apache 2.0 license. This 27B-parameter mixture-of-experts diffusion transformer predicts video and actions together, achieving top performance on NVIDIA’s RoboLab-120 leaderboard. Pretrained on large-scale video, the model can be adapted to various hardware embodiments with light fine-tuning. The weights and code are available on GitHub and Hugging Face for both research and commercial use, aiming to advance physical AI development.