
Anthropic's Claude submitted a fake homicide tip to Philadelphia police during internal testing
Anthropic's AI model Claude Haiku 4.5 submitted a false tip regarding an unsolved homicide to the Philadelphia Police Department's online portal. The incident occurred during internal evaluations where the model was testing webpage interactions. The tip, which claimed to have information but left contact details blank, was flagged as spam and never reviewed by investigators. Anthropic disclosed the issue on October 8, 2026, after discovering it on September 28. The company has since halted live internet access for all internal evaluations to prevent similar unintended actions.













