AI-fabricated citations are now career-ending: the 2026 sanctions
2026-10-06
In 2026, courts sharply escalated sanctions for AI-fabricated citations. A federal judge in Mississippi barred two lawyers for two years and fined all four after both sides cited fake cases (June 2026). The Ninth Circuit sanctioned and suspended two attorneys for six months after a brief contained citations to opinions that did not exist (June 2026). Sanctions have risen from $5,000 in Mata v. Avianca (2023) to a record six-figure sum, and California's SB 574 (October 2026) adds a stronger duty of review. The practical lesson is simple: open every citation and confirm it exists, is current and supports the proposition before anything is filed.
What happened in 2026
- Mississippi (June 2026): four lawyers on opposing sides cited fake cases; two were barred for two years; all were fined and removed from the case.
- Ninth Circuit (June 2026): two attorneys sanctioned $2,500 each and suspended six months for briefs with non-existent opinions and fabricated quotes.
- Fines are rising: from $5,000 in Mata v. Avianca to a record six-figure figure this year.
- California SB 574 (October 2026): strengthens lawyers' duty to review AI output, and bars arbitrators from delegating decisions to AI.
Why it keeps happening
The tool is fluent, the work is fast, and the reviewer is tired. One lawyer told the court she did not know what a hallucinated case was. But the courts are consistent: using AI is fine; filing an unverified citation is not. The Ninth Circuit said it was not sanctioning the use of generative AI — only the failure to guard against its mistakes.
The four-minute check that prevents it
- Open the authority in a primary source. If you cannot open it, remove it.
- Confirm the citation is correct — parties, year, report, and that it is still good law.
- Read the passage you rely on. Does it actually decide the point, or is it distinguishable?
- Record claim, source and type in an authority ledger before the document leaves your desk.
A missing citation is far better than a false one. If a point cannot be traced to something you have opened, it does not go into the document.
Make it a firm standard
One lawyer's checking is fragile; a firm's policy is not. A one-page AI-use policy, a matter-level register and a named sign-off turn a habit into a defence. That is exactly what the Governance Pack is for.