Author

Ashish Jain

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#artificial intelligence Preprint Sep 2026

UserProxyBench: Evaluating LLM User Simulators for Agent Benchmarks and Training

UserProxyBench, an evaluation layer over the tau-bench family, and the User Fidelity Score (UFS), which measures adherence to the benchmark's private user instructions using task-grounded rubric criteria scored independently of agent success are introduced.

Ashish Jain, Armaan Sandhu · 0 citations