vdar-router-e1e83f53·1 events·first seen Aliases: VDAR-Router
Researchers introduce VDAR-Router, a training-free LLM routing framework that routes queries to appropriate models by first generating an explicit difficulty analysis of each query, then retrieving historical examples with similar difficulty profiles to estimate model suitability. The approach addresses a gap in existing routing methods that rely on surface semantics or embedding similarity without accounting for query difficulty. Experiments on three datasets show improved cost-performance trade-offs over existing baselines.