Anthropic loosens Fable 5's biology restrictions but keeps the guardrails on for virology and toxicology
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 .
Record details
Published: 7 August 2026
Source: The Decoder
Category: News
Topics: Biotech
Retrieved: 8 August 2026
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How to cite this record
ethics.ai (7 August 2026), “Anthropic loosens Fable 5's biology restrictions but keeps the guardrails on for virology and toxicology,” evidence record 17589, https://ethics.ai/record/17589 (originally published by The Decoder).
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