When LLM judges agree, should we believe them? Amazon Science says not necessarily

Betelbuddy · hn · 2026-09-15

Amazon Science challenges a common assumption in LLM-as-a-judge setups: agreement among multiple LLM judges doesn't mean correctness. LLM evaluators built on similar models and data can share systematic biases, so consensus may reflect shared bias rather than truth. The piece analyzes why and suggests ways to mitigate this when using LLMs for evaluation.

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