AI BriefingRunway Releases Praxis-1 Open-Weight Robotics Model
·2026.11.12 00:00
Key point
The 27B-parameter model is available under Apache 2.0 and outperforms FLUX 3 Action and Cosmos3 Nano on the RoboLab-120 leaderboard.
Details
- Runway releases Praxis-1, a 27B-parameter mixture-of-experts diffusion transformer, as an open-weight model under the Apache 2.0 license.
- Praxis-1 achieves 46.2% success on the NVIDIA RoboLab-120 leaderboard, outperforming FLUX 3 Action (42.9%), Cosmos3 Nano (36.8%), and π0.5 (28.0%).
- The model supports native LeRobot integration and runs on NVIDIA hardware ranging from H100 and B200 data center GPUs to Jetson Thor.
- Fine-tuning on Google's RT-1 robot, which was not in the training data, yields 80.0% success on SimplerEnv compared to the original policy's 52.4%.
- Weights and code are available on GitHub and Hugging Face, with hosted inference options on Reactor and Runway Dev.
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