Law firm AI error apology
What happened
- Wall Street law firm Sullivan & Cromwell apologised after AI hallucinations introduced errors into a federal court filing. - The firm said AI-generated inaccuracies reached a federal judge and required a formal correction. - The episode highlights legal exposure when AI-generated content appears unchecked in high-profile filings (theguardian.com).
Why it matters
Sullivan & Cromwell told a federal bankruptcy judge that artificial intelligence inserted false citations and other errors into a court filing, forcing the Wall Street firm to apologize and refile. (reuters.com) The apology went to Chief Judge Martin Glenn of the U.S. Bankruptcy Court in Manhattan on April 18, after the firm’s April 9 emergency motion in the Prince Global Holdings Chapter 15 case reached the court with mistakes. Andrew Dietderich, co-head of the firm’s restructuring practice, said the filing contained inaccurate citations generated by AI. (news.bloomberglaw.com, canadianlawyermag.com) Dietderich said the firm’s review process failed to catch the bad citations and other mistakes before the motion was filed. He also said Sullivan & Cromwell submitted a redlined correction and apologized to Boies Schiller Flexner, whose lawyers flagged the problems. (news.bloomberglaw.com, law.com) In court filings, a citation is the address for a legal argument: the case, statute, or regulation that lets a judge check whether a lawyer’s claim is real. When an AI system hallucinates, it can invent that address, swap in the wrong case, or misquote the source it is supposed to summarize. (globallegalpost.com, nytimes.com) That matters in a bankruptcy case because judges often have to move quickly on emergency motions that can freeze assets or shape control of a cross-border insolvency. Prince Global filed for Chapter 15 protection in New York on April 8 to seek recognition of insolvency proceedings in the British Virgin Islands. (sullcrom.com, bkalerts.com) The Prince matter is tied to a larger fraud case. Bloomberg Law reported that Sullivan & Cromwell represents liquidators for Prince Global Holdings, and the Justice Department indicted owner Chen Zhi in October 2025 for allegedly running an internet scam compound in Cambodia. (news.bloomberglaw.com, law.com) Courts have been seeing more of these mistakes as generative AI spreads through legal work. Bloomberg Law said a database tracking AI-tainted court filings now lists more than 330 examples, and some judges have fined lawyers or ordered sworn explanations after fake citations appeared in briefs. (news.bloomberglaw.com, nytimes.com) Sullivan & Cromwell said its own safeguards were supposed to prevent exactly this outcome and that it is reviewing whether stronger training and review rules are needed. The firm declined additional comment to Bloomberg Law after the filing became public. (news.bloomberglaw.com, reuters.com)
Key numbers
- Bankruptcy Court in Manhattan on April 18, after the firm’s April 9 emergency motion in the Prince Global Holdings Chapter 15 case reached the court with mistakes.
- Prince Global filed for Chapter 15 protection in New York on April 8 to seek recognition of insolvency proceedings in the British Virgin Islands.
- Bloomberg Law reported that Sullivan & Cromwell represents liquidators for Prince Global Holdings, and the Justice Department indicted owner Chen Zhi in October 2025 for allegedly running an internet scam compound in Cambodia.
- Bloomberg Law said a database tracking AI-tainted court filings now lists more than 330 examples, and some judges have fined lawyers or ordered sworn explanations after fake citations appeared in briefs.
Quick answers
What happened in Law firm AI error apology?
Wall Street law firm Sullivan & Cromwell apologised after AI hallucinations introduced errors into a federal court filing. The firm said AI-generated inaccuracies reached a federal judge and required a formal correction. The episode highlights legal exposure when AI-generated content appears unchecked in high-profile filings (theguardian.com).
Why does Law firm AI error apology matter?
Sullivan & Cromwell told a federal bankruptcy judge that artificial intelligence inserted false citations and other errors into a court filing, forcing the Wall Street firm to apologize and refile. (reuters.com) The apology went to Chief Judge Martin Glenn of the U.S. Bankruptcy Court in Manhattan on April 18, after the firm’s April 9 emergency motion in the Prince Global Holdings Chapter 15 case reached the court with mistakes. Andrew Dietderich, co-head of the firm’s restructuring practice, said the filing contained inaccurate citations generated by AI. (news.bloomberglaw.com, canadianlawyermag.com) Dietderich said the firm’s review process failed to catch the bad citations and other mistakes before the motion was filed. He also said Sullivan & Cromwell submitted a redlined correction and apologized to Boies Schiller Flexner, whose lawyers flagged the problems. (news.bloomberglaw.com, law.com) In court filings, a citation is the address for a legal argument: the case, statute, or regulation that lets a judge check whether a lawyer’s claim is real. When an AI system hallucinates, it can invent that address, swap in the wrong case, or misquote the source it is supposed to summarize. (globallegalpost.com, nytimes.com) That matters in a bankruptcy case because judges often have to move quickly on emergency motions that can freeze assets or shape control of a cross-border insolvency. Prince Global filed for Chapter 15 protection in New York on April 8 to seek recognition of insolvency proceedings in the British Virgin Islands. (sullcrom.com, bkalerts.com) The Prince matter is tied to a larger fraud case. Bloomberg Law reported that Sullivan & Cromwell represents liquidators for Prince Global Holdings, and the Justice Department indicted owner Chen Zhi in October 2025 for allegedly running an internet scam compound in Cambodia. (news.bloomberglaw.com, law.com) Courts have been seeing more of these mistakes as generative AI spreads through legal work. Bloomberg Law said a database tracking AI-tainted court filings now lists more than 330 examples, and some judges have fined lawyers or ordered sworn explanations after fake citations appeared in briefs. (news.bloomberglaw.com, nytimes.com) Sullivan & Cromwell said its own safeguards were supposed to prevent exactly this outcome and that it is reviewing whether stronger training and review rules are needed. The firm declined additional comment to Bloomberg Law after the filing became public. (news.bloomberglaw.com, reuters.com)
