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Robotics

VoLo: A Physical Orchestrator for Open-Vocabulary Long-Horizon Manipulation

Siyi Chen, Hugo Hadfield, Alex Zook, Mikaela Angelina Uy, Chan Hee Song, Erwin Coumans, Xuning Yang, Faisal Ladhak, Qing Qu, Stan Birchfield, Jonathan Tremblay, Valts Blukis

Featured June 11, 2026

Original Paper

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Simply

Instead of relying on a single robot brain, VoLoAgent acts like a manager that uses different specialized tools to fix mistakes and keep the robot on track during complex tasks.

In depth
The authors propose VoLoAgent, a system that treats a Vision-Language-Action (VLA) model as an interruptible tool within a closed-loop physical orchestration framework. By integrating perception models and action primitives as callable tools, the agent can monitor execution in real-time, halt failing policies, and perform adaptive recovery to complete complex, long-horizon tasks.

Key Takeaways

  • 1
    The paper introduces physical orchestration, a paradigm where a VLM agent manages heterogeneous tools to handle real-time execution divergence.
  • 2
    The authors present RoboVoLo, a high-fidelity benchmark with 126 tasks designed to evaluate long-horizon reasoning, memory, and failure recovery.
  • 3
    Empirical results demonstrate that the VoLoAgent orchestrator significantly outperforms standalone action models and hard-wired hierarchical pipelines.

Conceptual Flow

HIGH LEVEL
1
Methodology

The agent acts as a manager that watches the robot work and switches tools if something goes wrong.

User Instruction
Camera View
Orchestrate Tools
Robot Action
2
Results

The new system completes many more tasks than older methods by fixing errors as they happen.

Old Methods

VoLoAgent

Compare Success Rate

Higher Performance