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Legal research
Lexi's guides on legal research: practical advice for law firms choosing and running AI in their operations, written for partners and administrators who have to decide, with the trade-offs spelled out and the sources shown. New guides are added as the tools and the rules change.
October 14, 2026Can Harvey AI Hallucinate Case Citations Like ChatGPT?Yes. Harvey AI can still hallucinate or misstate case citations, though less often than ChatGPT when it answers from LexisNexis primary law through Ask LexisNexis. No independent benchmark has measured Harvey's error rate, and courts sanction fake citations whatever tool produced them, so a lawyer still has to check every cite.
March 12, 2025How AI Is Transforming Legal Research in 2025Large language models are reshaping how attorneys find case law, draft memos, and verify citations across real firm workflows. For decades, legal research has followed the same essential workflow: identify the issue, choose the right database, construct Boolean search queries, scan hundreds of results, read the promising cases, take notes, and repeat until you're confident you haven't missed anything material.