Anthropic on August 7, 2026 released an update to the biology safeguards on Claude Fable 5 that the company says cut biology-related “fallbacks” by about 85% in testing across its product surfaces — the automatic handoffs that route a user’s query to a less capable model when the system judges a request touches safeguarded biology territory. In its announcement, Anthropic said users should now see far fewer fallbacks on everyday health and educational questions, such as interpreting lab…