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ChatGPT-using lawyer punished for citing fake testimony from made-up witnesses

Written and edited by the WorldPing NewsdeskPublished Updated Original reporting: Ars Technica
ChatGPT-using lawyer punished for citing fake testimony from made-up witnessesWorldPing
Image via Ars Technica.

What happened

"I didn't know that AI could hallucinate facts," New Mexico defense lawyer says.

Key facts

  • Reported by Ars Technica and published Fri, 11 Sep 2026 19:34:09 UTC.

Why it matters

Platform, chip and AI decisions set the terms other companies have to build on, so a single announcement here tends to ripple through products, supply chains and regulation.

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  • Independent testing or verification of the claims made
  • Responses from regulators and competing platforms

Coverage timeline

When each newsroom published on this story, oldest first — all times UTC.

  1. ChatGPT-using lawyer punished for citing fake testimony from made-up witnesses

  2. Lawyer fined $5K over AI-hallucinated witnesses in a murder case

Sources

The original report was published by Ars Technica. WorldPing does not claim that reporting — this page summarises and contextualises it.

Read the full report at Ars Technica

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The Verge
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The Verge

Lawyer fined $5K over AI-hallucinated witnesses in a murder case

New Mexico's Supreme Court is punishing a lawyer for including AI-fabricated witnesses and fake police testimony in an appeal for his client's murder conviction, according to a report from Reuters.

Brief by WorldPing · Original reporting by The Verge