Andrea K. Tantaros v. Fox News Network, LLC
U.S. District Court, Southern District of New York · S.D.N.Y. · New York bar guidance
Conduct
Pro se plaintiff cited at least four fabricated cases and quoted non-existent GMVA statutory language.
Consequence
Warning issued by S.D.N.Y. Judge Stein; no monetary sanction given pro se status.
Lesson
High-profile pro se litigants still get warnings when AI fabrications surface; pro se solicitude applies consistently.
Verified May 7, 2026
- Citation
- Tantaros v. Fox News Network, LLC, No. 1:25-cv-00961 (S.D.N.Y. Mar. 27, 2026) (Stein, J.)
- Decided
- March 27, 2026
Summary
Pro se plaintiff Andrea K. Tantaros, a former Fox News commentator, filed briefing in a Gender Motivated Violence Act (GMVA) case that contained multiple defective citations. The court (Judge Sidney H. Stein) identified several non-existent cases cited as analogous authority, including a fabricated "Roe v. Bernabei & Katz, PLLC" citation, a non-existent "Torres v. City of New York" citation, and a non-existent "M.D. v. New York State Off For People with Developmental Disabilities" citation. The court also found that Tantaros quoted statutory language from the GMVA that does not appear in the statute. Judge Stein issued a warning rather than sanctions, noting the plaintiff's pro se status.
- AI tool:
- Implied (court suspected AI hallucinations; specific tool not identified on the record)
What sanction did the court impose?
Warning issued. No monetary sanction imposed; no formal disciplinary referral given pro se status.
Why does Andrea K. Tantaros v. Fox News Network, LLC matter for law firms using AI?
Tantaros illustrates the S.D.N.Y.’s consistent application of pro se solicitude in AI-hallucination cases: even when a plaintiff is a sophisticated former broadcaster represented in past matters by counsel, pro se status at the filing in question controls the sanctions analysis. Judge Stein’s warning parallels the disposition in Anonymous v. NYC Department of Education (S.D.N.Y. 2024) and Dukuray v. Experian (S.D.N.Y. 2024), both of which warned without sanctioning first-occurrence pro se AI fabrications. The doctrinal step forward in Tantaros is the explicit identification of fabricated statutory language as a separate hallucination category, not just fabricated case citations.
For firms representing defendants in S.D.N.Y. matters where the opposing party files pro se, the operational implication is that move-to-warn (rather than move-to-sanction) is the realistic outcome on a first AI-fabrication incident. The strategic value of flagging the fabrications is procedural: the court will consider the brief unreliable on the issues where the fabrications appear, even if no monetary sanction follows. Cite-checking the opposition brief and surfacing the hallucinations in your own response is a low-cost, high-credibility move.
Implications for your firm
Operational steps a firm reading this case may wish to consider documenting. Strategic and rule-application calls belong to your firm's attorneys.
- When opposing a pro se litigant in S.D.N.Y. who cites unfamiliar authority, run a CourtListener / Westlaw verification pass on every cited case before responding; AI-fabricated citations are now common enough to warrant a routine check.
- Quoted statutory language is the new vector: the Tantaros court found quoted GMVA text that does not appear in the statute. Verify quoted statutory language against the official code, not just citations.
Sources
Primary sources
Further reading
- R&G's tracker lists two Tantaros entries: one with Judge Karas dated 2026-03-30, and one with Judge Stein dated 2026-03-27. Charlotin's database lists only one entry (Stein, S.D.N.Y., 2026-03-27); the Volokh Conspiracy post identifies Judge Sidney Stein. The Karas/2026-03-30 entry appears to be R&G data error; treated as a single case here.
- Multiple Tantaros v. Fox News dockets exist on CourtListener (1:25-cv-00961, 1:25-cv-01675, 1:17-cv-02958, 1:19-cv-07131); the 2026-03-27 sanctions order is most likely in 1:25-cv-00961 based on filing date alignment, but PACER access is required to confirm definitively.
- Verbatim quoted holding language was paraphrased from the Volokh post and Charlotin synopsis rather than from the order text directly; re-extract from the PDF before quoting.