AgentFugue: Agent Scaling for Long-Horizon Tasks through Collective Reasoning

Fuente: arXiv
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Autores principales: Hu, Yuyang, Qian, Hongjin, Wang, Shuting, Liu, Jiongnan, Zhao, Tong, Li, Xiaoxi, Liu, Zheng, Dou, Zhicheng
Formato: Preprint
Publicado: 2026
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author Hu, Yuyang
Qian, Hongjin
Wang, Shuting
Liu, Jiongnan
Zhao, Tong
Li, Xiaoxi
Liu, Zheng
Dou, Zhicheng
author_facet Hu, Yuyang
Qian, Hongjin
Wang, Shuting
Liu, Jiongnan
Zhao, Tong
Li, Xiaoxi
Liu, Zheng
Dou, Zhicheng
contents Recent progress on long-horizon agentic tasks has been driven largely by scaling up individual agents through stronger models, better tools, and more effective scaffolding. In contrast, much less is understood about scaling out: whether multiple peer agents, all targeting the same task, can become an additional source of capability without relying on explicit role specialization or workflow orchestration. We study this question and propose AgentFugue, a collective reasoning framework built around a shared reasoning hub. As peer agents explore the same task in parallel, the hub records concise notes on what each agent has established, attempted, or ruled out, and enables each agent to selectively access what other agents have discovered in a form useful for its current search. This design turns otherwise isolated trajectories into a connected ecology of reusable intermediate reasoning without requiring centralized planning. We instantiate the hub as a plug-in communication layer, trained with supervised fine-tuning and end-to-end reinforcement learning. Across the challenging long-horizon settings we study, AgentFugue improves over strong baselines. Our results suggest that collective reasoning can turn scaling out peer agent systems into a distinct source of capability gains, rather than merely a way of spending more compute.
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id arxiv_https___arxiv_org_abs_2605_24486
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle AgentFugue: Agent Scaling for Long-Horizon Tasks through Collective Reasoning
Hu, Yuyang
Qian, Hongjin
Wang, Shuting
Liu, Jiongnan
Zhao, Tong
Li, Xiaoxi
Liu, Zheng
Dou, Zhicheng
Artificial Intelligence
Computation and Language
Recent progress on long-horizon agentic tasks has been driven largely by scaling up individual agents through stronger models, better tools, and more effective scaffolding. In contrast, much less is understood about scaling out: whether multiple peer agents, all targeting the same task, can become an additional source of capability without relying on explicit role specialization or workflow orchestration. We study this question and propose AgentFugue, a collective reasoning framework built around a shared reasoning hub. As peer agents explore the same task in parallel, the hub records concise notes on what each agent has established, attempted, or ruled out, and enables each agent to selectively access what other agents have discovered in a form useful for its current search. This design turns otherwise isolated trajectories into a connected ecology of reusable intermediate reasoning without requiring centralized planning. We instantiate the hub as a plug-in communication layer, trained with supervised fine-tuning and end-to-end reinforcement learning. Across the challenging long-horizon settings we study, AgentFugue improves over strong baselines. Our results suggest that collective reasoning can turn scaling out peer agent systems into a distinct source of capability gains, rather than merely a way of spending more compute.
title AgentFugue: Agent Scaling for Long-Horizon Tasks through Collective Reasoning
topic Artificial Intelligence
Computation and Language
url https://arxiv.org/abs/2605.24486