Anthropic’s most powerful model comes with a kill switch aimed at you

Anthropic released its most capable model yet today, and it ships with a downgrade switch pointed at the user. Claude Fable 5 is “state-of-the-art on nearly all tested benchmarks,” but when its classifiers detect a question about cybersecurity, biology, chemistry, or model “distillation,” your request gets rerouted to a weaker model, Opus 4.8. Anthropic…