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New benchmark ProtocolBench evaluates LLM multi-agent communication protocols

Researchers have introduced ProtocolBench, a new benchmark designed to systematically evaluate the performance and reliability of communication protocols used in large-scale multi-agent systems. The benchmark measures task success, latency, message overhead, and robustness under failures, revealing significant performance variations between different protocols. Additionally, the study presents ProtocolRouter, an adaptive system that selects the most suitable protocol based on specific scenario requirements and runtime signals, demonstrating improved recovery times and task success rates compared to static protocol choices. AI

IMPACT Standardizes evaluation of LLM multi-agent communication, potentially improving reliability and efficiency in complex AI systems.

RANK_REASON The cluster contains an academic paper detailing a new benchmark and system for evaluating LLM multi-agent protocols. [lever_c_demoted from research: ic=1 ai=1.0]

Read on arXiv cs.AI →

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COVERAGE [1]

  1. arXiv cs.AI TIER_1 English(EN) · Hongyi Du, Jiaqi Su, Jisen Li, Lijie Ding, Yingxuan Yang, Peixuan Han, Xiangru Tang, Kunlun Zhu, Jiaxuan You ·

    ProtocolBench: Which LLM MultiAgent Protocol to Choose?

    arXiv:2510.17149v3 Announce Type: replace Abstract: As large-scale multi-agent systems evolve, the communication protocol layer has become a critical yet under-evaluated factor shaping performance and reliability. Despite the existence of diverse protocols (A2A, ACP, ANP, Agora, …