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Home/Research Paper Library/Large Language Models Often Know When They Are Being Evaluated

Large Language Models Often Know When They Are Being Evaluated

Measured evaluation awareness in frontier models, showing they often recognise test settings, a threat to the validity of safety evaluations.

evaluation awarenessapollovalidity

Research question

Can frontier models distinguish evaluation transcripts from real usage?

Key findings

Gemini 2.5 Pro reached 0.83 AUC at identifying evaluations, approaching the human baseline of 0.92 - Agentic transcripts were easier to identify than chat

Sources

arxiv.orghttps://arxiv.org/abs/2505.23836

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