arXiv Computation and Language By Rohith Reddy Bellibatlu, Edward Raff, Wenbin Zhang

JudgeSense: A Benchmark for Prompt Sensitivity in LLM-as-a-Judge Systems

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JudgeSense is a benchmark comprising 880 items from human‑labelled corpora, each presented under two differently worded instructions that ask the same question. The study evaluates 25 judges from six providers across four tasks, measuring how rewording affects agreement with the judge’s own verdicts. Results show that rewording reduces agreement on all tasks, with significant effects on two, and that stability varies across tasks and is not predicted by parameter count.

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