New Mexico lawyer punished for citing fake AI testimony

By The BriefBrief

A New Mexico defense lawyer said he did not know AI could hallucinate facts after he used ChatGPT-generated testimony involving made-up witnesses in a case. The lawyer was punished for citing the fabricated testimony.

WHO: New Mexico defense lawyer

WHAT: Was punished for citing fake testimony that included made-up witnesses generated via ChatGPT

WHEN: Reported Sep 11, 2026 at 3:34 PM ET

WHERE: New Mexico

WHY: The punishment followed the lawyer’s use of ChatGPT-generated testimony that included hallucinated, non-existent witnesses.

Reporting from 3 identified publishers across this event arc.

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Ars Technica — View reporting
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The Verge — View reporting

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