Anthropic Admits Claude AI Error in Legal Filing, Calls It Embarrassing and Unintentional

Anthropic has addressed accusations regarding an AI-generated source in its ongoing legal dispute with music publishers, characterizing the incident as an "unintentional citation error" made by its Claude chatbot.
The disputed citation appeared in an April 30th legal filing submitted by Anthropic data scientist Olivia Chen, part of the company's defense against allegations that Claude was trained using copyrighted song lyrics. During court proceedings, legal counsel representing Universal Music Group and other publishers flagged the cited sources as potentially fabricated, suggesting they might have been invented by Anthropic's AI system.
In a recently filed response, Anthropic's defense attorney Ivana Dukanovic clarified that while the cited material was authentic, Claude had been employed to format legal citations in the document. The company acknowledged that while automated checks caught and corrected inaccurate volume and page numbers generated by the AI, certain phrasing inaccuracies remained undetected during manual review.
Dukanovic explained, "The system correctly identified the publication name, year, and accessible link, but erroneously included incorrect article titles and author information," emphasizing this represented an honest mistake rather than deliberate misrepresentation. Anthropic expressed regret for the confusion caused, describing the oversight as "an unfortunate but unintentional error."
This case joins a growing list of legal proceedings where AI-assisted citation has created complications. Recently, a California judge reprimanded attorneys for not disclosing AI's role in preparing a brief containing non-existent legal references. The issue gained further attention last December when a misinformation researcher conceded that ChatGPT had invented citations in one of his legal submissions.
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Anthropic has addressed accusations regarding an AI-generated source in its ongoing legal dispute with music publishers, characterizing the incident as an "unintentional citation error" made by its Claude chatbot.
The disputed citation appeared in an April 30th legal filing submitted by Anthropic data scientist Olivia Chen, part of the company's defense against allegations that Claude was trained using copyrighted song lyrics. During court proceedings, legal counsel representing Universal Music Group and other publishers flagged the cited sources as potentially fabricated, suggesting they might have been invented by Anthropic's AI system.
In a recently filed response, Anthropic's defense attorney Ivana Dukanovic clarified that while the cited material was authentic, Claude had been employed to format legal citations in the document. The company acknowledged that while automated checks caught and corrected inaccurate volume and page numbers generated by the AI, certain phrasing inaccuracies remained undetected during manual review.
Dukanovic explained, "The system correctly identified the publication name, year, and accessible link, but erroneously included incorrect article titles and author information," emphasizing this represented an honest mistake rather than deliberate misrepresentation. Anthropic expressed regret for the confusion caused, describing the oversight as "an unfortunate but unintentional error."
This case joins a growing list of legal proceedings where AI-assisted citation has created complications. Recently, a California judge reprimanded attorneys for not disclosing AI's role in preparing a brief containing non-existent legal references. The issue gained further attention last December when a misinformation researcher conceded that ChatGPT had invented citations in one of his legal submissions.












