Agent S2: A Compositional Generalist-Specialist Framework for Computer Use Agents

Fuente: arXiv
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Auteurs principaux: Agashe, Saaket, Wong, Kyle, Tu, Vincent, Yang, Jiachen, Li, Ang, Wang, Xin Eric
Format: Preprint
Publié: 2025
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author Agashe, Saaket
Wong, Kyle
Tu, Vincent
Yang, Jiachen
Li, Ang
Wang, Xin Eric
author_facet Agashe, Saaket
Wong, Kyle
Tu, Vincent
Yang, Jiachen
Li, Ang
Wang, Xin Eric
contents Computer use agents automate digital tasks by directly interacting with graphical user interfaces (GUIs) on computers and mobile devices, offering significant potential to enhance human productivity by completing an open-ended space of user queries. However, current agents face significant challenges: imprecise grounding of GUI elements, difficulties with long-horizon task planning, and performance bottlenecks from relying on single generalist models for diverse cognitive tasks. To this end, we introduce Agent S2, a novel compositional framework that delegates cognitive responsibilities across various generalist and specialist models. We propose a novel Mixture-of-Grounding technique to achieve precise GUI localization and introduce Proactive Hierarchical Planning, dynamically refining action plans at multiple temporal scales in response to evolving observations. Evaluations demonstrate that Agent S2 establishes new state-of-the-art (SOTA) performance on three prominent computer use benchmarks. Specifically, Agent S2 achieves 18.9% and 32.7% relative improvements over leading baseline agents such as Claude Computer Use and UI-TARS on the OSWorld 15-step and 50-step evaluation. Moreover, Agent S2 generalizes effectively to other operating systems and applications, surpassing previous best methods by 52.8% on WindowsAgentArena and by 16.52% on AndroidWorld relatively. Code available at https://github.com/simular-ai/Agent-S.
format Preprint
id arxiv_https___arxiv_org_abs_2504_00906
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Agent S2: A Compositional Generalist-Specialist Framework for Computer Use Agents
Agashe, Saaket
Wong, Kyle
Tu, Vincent
Yang, Jiachen
Li, Ang
Wang, Xin Eric
Artificial Intelligence
Computation and Language
Computer Vision and Pattern Recognition
Machine Learning
Computer use agents automate digital tasks by directly interacting with graphical user interfaces (GUIs) on computers and mobile devices, offering significant potential to enhance human productivity by completing an open-ended space of user queries. However, current agents face significant challenges: imprecise grounding of GUI elements, difficulties with long-horizon task planning, and performance bottlenecks from relying on single generalist models for diverse cognitive tasks. To this end, we introduce Agent S2, a novel compositional framework that delegates cognitive responsibilities across various generalist and specialist models. We propose a novel Mixture-of-Grounding technique to achieve precise GUI localization and introduce Proactive Hierarchical Planning, dynamically refining action plans at multiple temporal scales in response to evolving observations. Evaluations demonstrate that Agent S2 establishes new state-of-the-art (SOTA) performance on three prominent computer use benchmarks. Specifically, Agent S2 achieves 18.9% and 32.7% relative improvements over leading baseline agents such as Claude Computer Use and UI-TARS on the OSWorld 15-step and 50-step evaluation. Moreover, Agent S2 generalizes effectively to other operating systems and applications, surpassing previous best methods by 52.8% on WindowsAgentArena and by 16.52% on AndroidWorld relatively. Code available at https://github.com/simular-ai/Agent-S.
title Agent S2: A Compositional Generalist-Specialist Framework for Computer Use Agents
topic Artificial Intelligence
Computation and Language
Computer Vision and Pattern Recognition
Machine Learning
url https://arxiv.org/abs/2504.00906