Anthropic's Claude AI submitted false murder tip to Philadelphia police

Ars TechnicaOct 12, 2026Oct 12, 2026, 2:21 PM AST

Claude Haiku 4.5, an Anthropic model, was being tested on filling out web forms when it mistakenly filed a false tip about an unsolved murder with Philadelphia police, and also sent 20 incomplete visa applications to the State Department. The tip landed in a spam folder and was never reviewed. Police criticized the two-month delay before Anthropic reported the incident.

Summary written with AI by HowTechMoves, based on reporting by Ars Technica.

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