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When Auditors Fabricate: Batch-Size Degradation and Confident Hallucination in LLM Detection of Planted Document Contamination

arXiv cs.CL ↗ · 2026-09-10 Cached

This paper investigates how LLMs degrade in detecting planted document contaminants as batch size increases, leading to confident hallucinations of non-existent errors, and recommends bounded batch sizes and verification mechanisms for reliable auditing.

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