Unsolvability Ceiling in Multi-LLM Routing: An Empirical Study of Evaluation Artifacts

概要

arXiv:2605.07395v1 Announce Type: cross Abstract: Efficient routing across multiple LLMs enables cost-quality tradeoffs by directing queries to the cheapest capable model. Prior work attributes routing headroom to an "unsolvability ceiling", queries no model in the pool can solve. We present a larg…