Anonymous world model MotuBrain tops WorldArena and RoboTwin2.0

拒绝透露姓名，却拿了两个世界第一：具身圈大佬们都在打听它是谁

MotuBrain ranked first on both WorldArena and RoboTwin2.0, with a 63.77 EWM Score on WorldArena and 95.8/96.1 in RoboTwin Clean and Randomized settings. The post says it also leads Motion Quality, Flow Score, and Motion Smoothness, and averages 96.0 across 50 RoboTwin tasks versus 92.3 for second place; the post does not disclose its owner, model size, or training setup. The result matters because it supports a single-model path that combines world prediction with robot action, at least on benchmarks.

Why it matters: HKR-H lands on the anonymous double-#1 hook; HKR-K lands on concrete scores across WorldArena and RoboTwin; HKR-R lands on the embodied-AI nerve around one model doing prediction and action. I kept it in the low 80s because ownership, scale, training data, and reproducibility are