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RouterEval

EMNLP 2025 Findings benchmark for routing at model-pool scale: 200M+ performance records across 8,500+ LLMs and 12 evaluations. Its headline finding — a capable router improves as the candidate pool grows, potentially beating the best single model in it — is the research backing for the whole cheap-first-escalate pattern this list's Tools section builds. Code.

section
Evaluation
group
Class-native suites
source
arxiv.org
added to list
nov 10

also in Class-native suites