Filevine Unveils Citator and Anti-Hallucination Capabilities for LOIS Legal Research

A new citator reads the case law itself and surfaces whether a holding remains good law, including negative treatments that other Shepardizing tools miss. LOIS's anti-hallucination technology goes further, reading the attorney's brief to verify every citation exists, every quote is accurate, and every opinion actually supports the underlying claim.

SALT LAKE CITY, Sept. 1, 2026 /PRNewswire/ -- Filevine today launched a citator and anti-hallucination capabilities inside LOIS Legal Research, built to solve legal AI's costliest mistake: a citation that looks right but isn't. Sometimes the case doesn't exist at all. Far more often, the case is real, but it doesn't say what the brief claims it does.

No technology removes a lawyer's professional obligation to verify every citation before it's filed. Courts are sanctioning attorneys nationwide over AI-generated errors, costing careers, licenses, and in at least one case, an entire trial. LOIS streamlines this verification process, reducing hours of work to mere minutes. Every citation in LOIS carries a status, unverified cases are flagged before filing, and verification happens in the same tool where the brief gets drafted.

Filevine's own legal team ran LOIS against 68 federal filings that courts had already sanctioned for fabricated or misused authority. The team checked 2,073 citations and confirmed 174 severe errors the filing attorneys themselves had missed. Read the full evaluation here. In another head-to-head test, LOIS caught all 14 "silent" negative treatments in a case set: holdings quietly overruled by opinions that never cite them. Westlaw's KeyCite and Lexis' Shepard's caught none.

Our goal is to give lawyers control before they file — not after a judge finds what they missed.

Welcome to the new age of Legal Research.

Learn More

See what verifiable legal AI looks like. Join Filevine CEO and co-founder Ryan Anderson on September 10 for From Risk to Reliability: Check the Cite. See the Reasoning. Read the Opinion., a live demonstration of how LOIS checks citations, connects lawyers directly to primary sources, and makes verification part of the work rather than an afterthought. Register now, or learn more about LOIS Legal Research.

About Filevine

Filevine, Inc. is headquartered in Salt Lake City, Utah, with offices around the world. As the legal industry's definitive system of record, Filevine differentiates itself from fragmented, point-solution tools by uniting contracts, matters, documents, research, and workflows into a single platform built for modern legal teams. Its Legal Operating Intelligence System (LOIS) delivers seamless, end-to-end control across every stage of the legal lifecycle.

Law firms, enterprises, and government agencies rely on Filevine to manage complex legal work with precision, security, and institutional intelligence. Recognized as a leader in Legal AI, Filevine has been honored by the LegalTech Breakthrough Awards, The SaaS Awards, Deloitte Technology Fast 500, and the Business Intelligence AI Excellence Award (2025). Today, thousands of organizations trust Filevine to eliminate fragmented software and deliver measurable outcomes across their practices.

SOURCE Filevine