Optimizing Sequential Multi-Step Tasks with Parallel LLM Agents

Fuente: arXiv
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Auteurs principaux: Zhang, Enhao, Zhu, Erkang, Bansal, Gagan, Fourney, Adam, Mozannar, Hussein, Gerrits, Jack
Format: Preprint
Publié: 2025
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author Zhang, Enhao
Zhu, Erkang
Bansal, Gagan
Fourney, Adam
Mozannar, Hussein
Gerrits, Jack
author_facet Zhang, Enhao
Zhu, Erkang
Bansal, Gagan
Fourney, Adam
Mozannar, Hussein
Gerrits, Jack
contents Large language model (LLM)-based multi-agent systems have demonstrated remarkable promise for tackling complex tasks by breaking them down into subtasks that are iteratively planned, executed, observed, and refined. Despite their effectiveness, these systems often incur high latency because real-world problems frequently demand multiple iterative cycles of reasoning steps. To address this challenge, we propose M1-Parallel, a framework that concurrently runs multiple multi-agent teams in parallel to uncover distinct solution paths. By leveraging an event-driven communication model with asynchronous messaging, M1-Parallel efficiently capitalizes on the inherent diversity of valid plans to either reduce end-to-end latency or boost task completion rates. Our experiments on complex tasks show that M1-Parallel with early termination achieves up to $2.2\times$ speedup while preserving accuracy, and that M1-Parallel with aggregation yields higher task completion rates. We further investigate strategies aimed at encouraging diverse execution plans but observe no additional performance gains over repeated sampling. Overall, these findings underscore the potential of parallel plan execution for optimizing multi-agent systems for real-world, high-complexity reasoning tasks.
format Preprint
id arxiv_https___arxiv_org_abs_2507_08944
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Optimizing Sequential Multi-Step Tasks with Parallel LLM Agents
Zhang, Enhao
Zhu, Erkang
Bansal, Gagan
Fourney, Adam
Mozannar, Hussein
Gerrits, Jack
Multiagent Systems
Artificial Intelligence
Large language model (LLM)-based multi-agent systems have demonstrated remarkable promise for tackling complex tasks by breaking them down into subtasks that are iteratively planned, executed, observed, and refined. Despite their effectiveness, these systems often incur high latency because real-world problems frequently demand multiple iterative cycles of reasoning steps. To address this challenge, we propose M1-Parallel, a framework that concurrently runs multiple multi-agent teams in parallel to uncover distinct solution paths. By leveraging an event-driven communication model with asynchronous messaging, M1-Parallel efficiently capitalizes on the inherent diversity of valid plans to either reduce end-to-end latency or boost task completion rates. Our experiments on complex tasks show that M1-Parallel with early termination achieves up to $2.2\times$ speedup while preserving accuracy, and that M1-Parallel with aggregation yields higher task completion rates. We further investigate strategies aimed at encouraging diverse execution plans but observe no additional performance gains over repeated sampling. Overall, these findings underscore the potential of parallel plan execution for optimizing multi-agent systems for real-world, high-complexity reasoning tasks.
title Optimizing Sequential Multi-Step Tasks with Parallel LLM Agents
topic Multiagent Systems
Artificial Intelligence
url https://arxiv.org/abs/2507.08944