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Sullivan & Cromwell admits AI errors in high-profile legal filing

A prominent Wall Street law firm, Sullivan & Cromwell, has admitted to a New York federal court that a recent filing contained significant errors due to AI hallucinations. These inaccuracies included misquoted legal statutes and fabricated case citations, which were discovered by opposing counsel. The firm apologized for the mistakes, stating that their internal AI usage policies were not followed and that a secondary review failed to catch the errors. A corrected filing has since been submitted. AI

IMPACT Highlights the critical need for rigorous human oversight and adherence to AI usage policies in legal document preparation.

RANK_REASON Law firm admits to AI errors in court filing, highlighting potential risks of AI tools in legal practice.

Read on The Guardian — AI →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

Sullivan & Cromwell admits AI errors in high-profile legal filing

COVERAGE [1]

  1. The Guardian — AI TIER_1 English(EN) · Mark Sweney ·

    AI hallucinations found in high-profile Wall Street law firm filing

    <p>Sullivan &amp; Cromwell apologises to New York federal judge for string of errors in documents for Prince Group case</p><ul><li><p><a href="https://www.theguardian.com/business/live/2026/apr/22/uk-inflation-increase-fuel-prices-oil-falls-trump-ceasefire-extended-business-live-…