21 LLM judges, 541,000 verdicts, 9 providers. Raw agreement overstated real accuracy by 33-41 points on every model.
A team ran 541,000 judgments across 21 LLM judges from nine providers. The finding that held up everywhere: exact-match agreement overstates chance-corrected accuracy by 33 to 41% points. On every single model. The paper is "Reliability without Validity" (arXiv:2606.19544, June 2026). The authors c…
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- 2026-09-23 14:13 · r/PromptEngineering
21 LLM judges, 541,000 verdicts, 9 providers. Raw agreement overstated real accuracy by 33-41 points on every model.
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