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Fable 5 biology safeguards

Anthropic | In Edition 46,

The call on this one

DEPLOYif your team asks health or lab questions

SOURCE Anthropic, Improving Fable 5's biology safeguards

Anthropic reduced biology-related fallbacks on Claude Fable 5 by about 85% across product surfaces, so users see far fewer switches to Opus 5 on everyday health and educational questions.

Added to The Deploy Log , updated . Read Edition 46, the edition that carried it.

46 rows from Anthropic in The Deploy Log are dated on or before this one, this one included.

Before it from Anthropic: Claude Opus 5, 14 days earlier. After it: Claude team plan for scientists, 21 days later.

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