Runway Open-Sources Praxis-1, Tops RoboLab-120 With 46.2% Success Rate
11/11/2026 — 11/12, 18:20·3 sources (all)·4 reports (all)
Key takeaways
- Runway has released Praxis-1, a 27B MoE diffusion Transformer, in its Hugging Face runwayml collection, with open weights under the Apache 2…
Background & analysis
On November 11, 2026, Runway announced on X that Praxis-1 is now available to everyone. The weights of this world action model are released under the Apache 2.0 license, meaning anyone can run and fine-tune it on their own hardware. Runway describes Praxis-1 as a state-of-the-art world action model that turns video pretraining into control for real robots.
In the same announcement, Runway shared benchmark-style claims comparing Praxis-1 against frontier LLMs on robotic arm manipulation. According to Runway, when tested on the same station and the same set of tasks, Praxis-1 finished 15.6x faster than GPT-6 Astra driving the arm, while achieving 51x lower cost per completed task. These comparisons come from Runway itself, and the available material does not disclose the test scale or a task list, nor is there any independent verification from third parties. As of the latest report, the material covers only this announcement, with no further developments.
AI-generated from 2 reports · updated 2 days ago
Latest turnRunway has published Praxis-1, a 27B-parameter mixture-of-experts diffusion transformer that predicts video and actions together, in its runwayml collection on Hugging Face. It reports a 46.2% success rate on NVIDIA's RoboLab-120 leaderboard, ahead of FLUX 3 Action at 42.9%, Cosmos3 Nano at 36.8% and π0.5 at 28.0%.
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Reports on this story headlines open the original
Runway has published Praxis-1, a 27B-parameter mixture-of-experts diffusion transformer that predicts video and actions together, in its runwayml collection on Hugging Face. It reports a 46.2% success rate on NVIDIA's RoboLab-120 leaderboard, ahead of FLUX 3 Action at 42.9%, Cosmos3 Nano at 36.8% and π0.5 at 28.0%.
Reddit · LocalLLaMAAI score 55Runway released Praxis-1, a 27-billion-parameter open-weight model under the Apache 2.0 license that controls real robots by predicting physical world dynamics. The model currently ranks first among world action models on NVIDIA's RoboLab-120 leaderboard.
DEV Community · AIAI score 82
Runway says Praxis-1 finished robot-arm tasks 15.6x faster than GPT-6 Astra on the same station and task set, at 51x lower cost per completed task. The comparison is Runway's own and the material does not detail task count or setup.
X：Runway (@runwayml)AI score 54Runway is making Praxis-1 available to everyone, shipping open weights under Apache 2.0 that run and fine-tune on your own hardware. The company describes it as a state-of-the-art world action model that turns video pretraining into control for real robots.
X：Runway (@runwayml)AI score 66
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