LLMMedium
ChatGPT Reportedly Produced False Court Case Law Presented by Legal Counsel in Court
- Occurred
- May 4, 2023
- Published
- Jun 24, 2023
- Source
- AI Incident Database
Summary
A lawyer in Mata v. Avianca, Inc. used ChatGPT for research. ChatGPT hallucinated court cases, which the lawyer then presented in court. The court determined the cases did not exist.
Developers
- OpenAI
Deployers
- Steven A. Schwartz
- Peter LoDuca
Harmed parties
- Roberto Mata
- Peter LoDuca
- Steven A. Schwartz
Tags
- response
- #response
Classification
Category confidence: 95%
Severity confidence: 90%
Rationale: ChatGPT hallucinated non-existent court cases, causing legal proceedings issues without physical harm or major financial loss.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8