Challenge: Multi-agent systems (MAS) powered by Large Language Models (LLMs) have been demonstrated to push the boundaries of LLM capabilities, yet they often face significant costs and challenges in dynamic LLM selection.
Approach: They propose a multi-agent system routing solution that integrates all components of MAS into a unified routing framework.
Outcome: The proposed solution is high-performing, cost-effective, and efficient . it reduces overhead by up to 52.07 compared to current methods on HumanEval .

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BiCSRouter: Bi-Level Cross-System Routing for Utility-Aware LLM Inference (2026.findings-acl)

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Challenge: Existing routing frameworks operate within a single computational paradigm . a cross-system routing framework that integrates two orthogonal regimes is proposed .
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