MolmoAct 2 ranks second to GPT-6 Astra in RoboColosseum robot tests
Zero-shot transfer to a physical Franka arm is a harder test than simulation benchmarks, so a ranking here signals which models generalize beyond their training tasks. Robotics teams evaluating foundation models for manipulation can use RoboColosseum's head-to-head setup as a reference when choosing between MolmoAct 2 and GPT-6 Astra.
