DynamicWAM: Dual-Path Motion Conditioning for World-Action Models in Dynamic Manipulation

• URL: http://arxiv.org/abs/2608.00793v2
• Date: Thu, 06 Aug 2026 05:24:35 GMT
• Title: DynamicWAM: Dual-Path Motion Conditioning for World-Action Models in Dynamic Manipulation
• Abstract summary: DynamicWAM is a compact WAM for dynamic object manipulation with dual-path motion conditioning.<n>On DOMINO, DynamicWAM achieves a 38.2% success rate and a 53.2 manipulation score, outperforming all evaluated baselines.
• Score: 7.0603285861926715
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Dynamic manipulation requires robots to infer target motion and respond promptly, yet existing World-Action Models (WAMs) typically condition only on the current frame and execute large backbones synchronously, limiting motion awareness and responsive control in dynamic scenes. We propose DynamicWAM, a compact WAM for dynamic object manipulation with dual-path motion conditioning. DynamicWAM introduces history-flow conditioning, encoding temporally aligned optical-flow frames alongside the current observation through a frozen pretrained video VAE to preserve spatial motion structure, while injecting kinematic descriptors of displacement, duration, velocity, and acceleration into the action expert to provide motion magnitude and timing. The two complementary paths are fused through joint world-action attention. A distilled compact backbone and real-time chunking (RTC)-based asynchronous execution further enable responsive control. On DOMINO, DynamicWAM achieves a 38.2% success rate and a 53.2 manipulation score, outperforming all evaluated baselines. Across 12 real-world tasks spanning linear, circular, and compound target motion, it achieves a 46.7% average success rate, exceeding the strongest baseline by 22.9 percentage points.

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