{
  "id": 17589,
  "url": "https://the-decoder.com/anthropic-loosens-fable-5s-biology-restrictions-but-keeps-the-guardrails-on-for-virology-and-toxicology",
  "title": "Anthropic loosens Fable 5's biology restrictions but keeps the guardrails on for virology and toxicology",
  "summary": "Anthropic has cut false positives in its biology safety filters for Fable 5 by about 85 percent. Previously, nearly all biology-related queries got blocked and rerouted to the less capable Opus 5. The restrictions stay in place for sensitive dual-use topics like virology and toxicology. The article Anthropic loosens Fable 5's biology restrictions but keeps the guardrails on for virology and toxicology appeared first on The Decoder .",
  "authors": "Matthias Bastian",
  "category": "news",
  "topics": "biotech",
  "orgs": "anthropic",
  "regions": null,
  "published_at": "2026-08-07T17:35:45.000Z",
  "fetched_at": "2026-08-08T05:10:34.355Z",
  "source_slug": "x-the-decoder",
  "source_name": "The Decoder",
  "source_homepage": "https://the-decoder.com",
  "ethics_ai_record_url": "https://ethics.ai/record/17589",
  "original_url": "https://the-decoder.com/anthropic-loosens-fable-5s-biology-restrictions-but-keeps-the-guardrails-on-for-virology-and-toxicology",
  "evidence_status": "source-only",
  "attribution": "via ethics.ai"
}