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Public trackerEvidence checked Jul 23, 2026 · Latest decision Jul 21, 2026Public incidents are risk signals, not usage-adjusted rates
Evidence-linked corpus record: this page is generated from the structured public record and has a publication-readiness score of 95/100. It passed the source, context, and standalone-summary checks used for public indexing; individual legal editorial review is not represented.
Evgeny Yaroshevsky v. Karlin et al.
E.D. New York · Mar 31, 2026
NY / federalEditorial impact: lowpro sefake citationsfabricated quotesmisrepresented authority
Direct answer
What happened in this matter?
Misrepresented: Other | Plaintiff admitted using Google Gemini to obtain citations and failed to verify them before filing, contributing to the submission of fabricated and inaccurate authorities. Outcome: Recommended adverse costs order. R&R was adopted later on (see here).
- Why the court cared
- The record concerns whether authorities presented to the decision-maker existed and could be verified. The tracked outcome is Recommended adverse costs order; the linked source controls the precise reasoning.
- Why it matters now
- Consumer chatbots like Gemini are not research tools — ban them from the legal research workflow outright.
Why this matter is tracked
Misrepresented: Other | Plaintiff admitted using Google Gemini to obtain citations and failed to verify them before filing, contributing to the submission of fabricated and inaccurate authorities. Outcome: Recommended adverse costs order. R&R was adopted later on (see here).
Operational lesson
Consumer chatbots like Gemini are not research tools — ban them from the legal research workflow outright.
Record details
New YorkSingle-state evidence scope
CourtE.D. New York
Jurisdictionfederal
Circuit2nd Circuit
DateMar 31, 2026
GE
AI toolGemini
Party typePro Se Litigant
OutcomeRecommended adverse costs order
Known amountNot recorded
Professional sanctionNo
Attribution boundary
What the record establishes about AI use
reported
Gemini is recorded in the source dataset; confirm the basis in the linked document.
Procedural posture
Recommended adverse costs order
Correction behavior
Correction behavior is not separately verified in the current record.
Tracked discrepancy record
3 citation, quotation, or authority issues are recorded in the source dataset.
- Misrepresented: Other | Plaintiff admitted using Google Gemini to obtain citations and failed to verify them before filing, contributing to the submission of fabricated and inaccurate authorities.
- Fabricated: Case Law | Multiple authorities cited by plaintiff did not exist; defendants identified at least five nonexistent cases in the complaint and five in other filings and the Court confirmed some citations were fabricated.
- False Quotes: Case Law | Numerous quotations attributed to cases could not be found in the opinions (Defendants identified ~13 instances; the Court found at least two such misquotes earlier).
Questions this record answers
- What happened in Evgeny Yaroshevsky v. Karlin et al.?
- Misrepresented: Other | Plaintiff admitted using Google Gemini to obtain citations and failed to verify them before filing, contributing to the submission of fabricated and inaccurate authorities. Outcome: Recommended adverse costs order. R&R was adopted later on (see here).
- Why does Evgeny Yaroshevsky v. Karlin et al. matter for legal AI risk?
- Consumer chatbots like Gemini are not research tools — ban them from the legal research workflow outright.
- What does the public record establish about Evgeny Yaroshevsky v. Karlin et al.?
- The record summarizes the outcome described in the linked public source. The recorded document is hosted in the upstream publisher archive. This page is not a substitute for the complete docket, subsequent history, or jurisdiction-specific advice.
- Which source supports this Evgeny Yaroshevsky v. Karlin et al. summary?
- The recorded source is Damien Charlotin case archive. It is classified as publisher document archive; review the linked material and subsequent docket history before relying on this summary.
Related matters
Related by court, jurisdiction, tool, or classified failure pattern. Similarity does not imply the same facts or outcome.