Rethinking Quality in Large Language Model Routing: Security-Conditioned Model-and-Budget Selection

Summary

Researchers propose SCRouter, an LLM router that picks both the model and the output-token budget for each query, weighing utility against security because the two objectives favor different choices. They release SCRouterBench, with 38,869 utility and security queries across nine security dimensions, each answered under all 144 model-budget combinations. SCRouter beats baselines by 13-29 points in-domain and 19-23 points out-of-domain.

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