Democratizing Robot-Use Agents: A Unified Harness with Open Models

Jiarui Yuan; Yuxin Zuo; Xiaoyu Huang; Wenbo Zhang; Kwanyoung Park; Junlin Yang; Tianxiang Zhang; Ruoqu Chen; Yutao Ouyang; Bingxiang He; Xingtai Lv; Hongjin Wu; Jiajun Liu; Jiahao Zhao; Tianwei Luo; Haozhan Li; Cheng Qian; Jiaxin Ge; Huan-ang Gao; Kaisen Yang; Jiaqi Deng; Qixin Xu; Siqiao Huang; Bowen Zhou; Mengdi Xu; Zhiyuan Liu; Pieter Abbeel; Ning Ding

arXiv · 2611.01560

Democratizing Robot-Use Agents: A Unified Harness with Open Models

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Abstract

Robot-use Agents (RUAs) have shown promising zero-shot manipulation capabilities, but reliance on frontier, proprietary models limits research into further training. To democratize RUA research, we introduce uni-robot-agent, a unified harness for competitive open-weight robot use that supports further training. Without privileged inputs, an out-of-the-box Qwen3.8-Flash-Next achieves a RoboDojo Score of 31.39, surpassing the published GPT-6 Astra-RoboProbe result of 28.97 and many VLA/WAM baselines, and performs competitively on 19 real-world tasks. Our analysis across model generations, families, and sizes links effective robot use to four general capabilities, suggesting that future RUA training should develop them jointly.

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Jiarui Yuan, Yuxin Zuo, Xiaoyu Huang, Wenbo Zhang, Kwanyoung Park, Junlin Yang, Tianxiang Zhang, Ruoqu Chen, Yutao Ouyang, Bingxiang He, Xingtai Lv, Hongjin Wu, Jiajun Liu, Jiahao Zhao, Tianwei Luo, Haozhan Li, Cheng Qian, Jiaxin Ge, Huan-ang Gao, Kaisen Yang, Jiaqi Deng, Qixin Xu, Siqiao Huang, Bowen Zhou, Mengdi Xu, Zhiyuan Liu, Pieter Abbeel, Ning Ding. 2026-11-03. Democratizing Robot-Use Agents: A Unified Harness with Open Models. https://arxiv.org/abs/2611.01560

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