arXiv AI By Patrik Reizinger, Wieland Brendel

HALLMARK: Diagnosing Three Failure Modes in LLM Citation Verifiers

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arXiv:2607. 18360v1 Announce Type: cross Abstract: Large language models (LLMs) now routinely draft literature reviews and assist with academic writing, which means a higher risk of fabricated references: GPTZero found 53 papers with hallucinated citations among NeurIPS 2025's accepted set.

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