Author

Souvick Das

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Preprint Aug 2026

How Much Do Legal RAG Systems Still Hallucinate?

A fine-grained analysis of hallucination behavior in eight legal RAG systems across two legal corpora, the GDPR and a national civil law, finds that false-premise questions, containing incorrect assumptions that must be rejected, produce high hallucination rates on the manually-drafted questions.

Souvick Das, S. Abualhaija, D. Bianculli · 0 citations