Anthropic / Claude4 min read
AI Safety
Claude Fable 5's biology fallbacks drop 85% as Anthropic eases safeguards
Anthropic cut Claude Fable 5's biology-related fallbacks by about 85% after retraining its safety classifier. Ordinary health and education queries now reach the full model more often, but virology, toxicology, and molecular design still route to Opus 5.
2026-08-10