LLM judge scores can stay stable while individual verdicts shift substantially

Across 500 held prompts, re-running the same judge changed 21.2% of outcomes despite a one-point aggregate move.

Academic
Louise Yorke

University College London

Research Digest··2 min read
The authors show that aggregate win rates from LLM judges can remain nearly unchanged while individual verdicts change dramatically.

1 as the judge under eight combinations of three binary choices: evaluation criteria (Arena-Hard default vs.

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