CoAct-1: Computer-using Multi-Agent System with Coding Actions
Linxin Song, Yutong Dai, Viraj Prabhu, Jieyu Zhang, Taiwei Shi, Li Li, Junnan Li, Silvio Savarese, Zeyuan Chen, Jieyu Zhao, Ran Xu, Caiming Xiong

TL;DR
CoAct-1 introduces a hybrid multi-agent system combining GUI control with coding actions, significantly improving efficiency and success rates in complex computer automation tasks.
Contribution
This work presents CoAct-1, a novel system that integrates coding capabilities into multi-agent GUI automation, enabling more robust and scalable task execution.
Findings
Achieves a 60.76% success rate on OSWorld benchmark.
Reduces average task steps to 10.15 from 15.
Outperforms prior GUI-based agents in efficiency and reliability.
Abstract
Autonomous agents that operate computers via Graphical User Interfaces (GUIs) often struggle with efficiency and reliability on complex, long-horizon tasks. While augmenting these agents with planners can improve task decomposition, they remain constrained by the inherent limitations of performing all actions through GUI manipulation, leading to brittleness and inefficiency. In this work, we introduce a more robust and flexible paradigm: enabling agents to use coding as a enhanced action. We present CoAct-1, a novel multi-agent system that synergistically combines GUI-based control with direct programmatic execution. CoAct-1 features an Orchestrator that dynamically delegates subtasks to either a conventional GUI Operator or a specialized Programmer agent, which can write and execute Python or Bash scripts. This hybrid approach allows the agent to bypass inefficient GUI action sequences…
Peer Reviews
Decision·ICLR 2026 Poster
Hybrid Approach: The combination of GUI manipulation and coding as an action creates a powerful, adaptable agent system. The Orchestrator’s dynamic task delegation helps maximize the efficiency of both visual interactions and direct system manipulation. State-of-the-Art Performance: CoAct-1 sets new benchmarks for both OSWorld (60.8% success rate) and WindowsAgentArena (52.5% success rate), outperforming existing methods like Agent S2.5 and GTA-1 by significant margins. The system excels in tas
Complexity: The reliance on three distinct agents (Orchestrator, Programmer, and GUI Operator) introduces significant system complexity. While the multi-agent framework allows for high flexibility, it also makes the system harder to manage and debug, especially in real-world applications where the agents may not always coordinate perfectly. Additionally, I believe that a more in-depth discussion about the differences between this work and other hybrid frameworks would be beneficial.
The paper is well written. The idea of a hybrid computer use agent is novel. The experiment is solid and covers different OS platforms. The overall presentation is good. The authors are also able to demonstrate the success rate increase and steps reduced from this CoAct-1 clearly over the current SoTA agents in the OSWorld benchmark and the WindowsAgentArena benchmark. The authors provide a detailed example of a user task and provide the detailed prompt of each module, which is useful for the re
Overall this is solid work and I don't have any specific questions or concerns.
1. Good engineering results and practical value. This work achieved SOTA (at the time of ICLR submission) on two OS use benchmarks, covering both Linux and Windows environments. 2. Clear methodology and good writing. Ablation studies are well-designed and insightful. Full prompts, model versions, and detailed implementation notes are provided, demonstrating a high level of transparency.
1. Limited research contribution. The paper reads more like a well-written technical report. The approach primarily combines existing and widely-used components (coding, visual, a multi-agent orchestrator) without proposing fundamental methodological advances. It has limited differentiation from general tool-use agents. 2. The OSWorld task distribution is skewed towards Office tasks, specifically, LibreOffice Calc and LibreOffice Writer, where programming agents could greatly outperform pure vi
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Taxonomy
TopicsMulti-Agent Systems and Negotiation
