Anthropic updated Fable 5 biological security protection, greatly reducing false interceptions. Anthropic announced on August 7 that it updated Claude Fable 5 biological security protection, greatly reducing false interceptions.

Anthropic updated the biological security protection of Fable 5, greatly reducing false interceptions. Anthropic announced on August 7 that it updated the biological security protection of Claude Fable 5, which greatly reduced false interceptions. Tests show that the number of times biology-related queries trigger system downgrades (switching to less capable models) is reduced by about 85%, and that daily health and education questions, such as interpreting lab results, understanding symptoms, and learning biology, will be blocked less frequently. Due to dual-use risk considerations, Fable 5 will still fall back to Opus 5 for professional biological research and drug development requests in virology, toxicology, molecular design, etc. The company says the update improves security classifiers by rewriting the rules and training data...