Sber's GreenWAM Unifies World Model and Policy Across 20 Robot Families, Beats π₀.₅ on Humanoids

Sber Robotics Center released GreenWAM, a single foundation model serving as both action-conditioned world model and policy across 20 robot families via a shared anatomical joint space. The team reports top WorldArena 1.0 scores on trajectory, depth and 3D accuracy, top entries on RoboTwin 2.0 and highest zero-shot LIBERO-plus success, with real-humanoid policy that beats π0.5 and Cosmos 3 Edge after distillation to a single-step controller. Weights are up on Hugging Face.