Anthropic bets on healthcare and biology as Claude sole-authored paper fuels hidden-model speculation

coherence · x · 2026-11-09

Per Andrew Curran, Anthropic began telling investors in early August it was aggressively focusing on healthcare and biology, implying unannounced progress (chart of employee self-reported uplift included). The post also cites a paper whose sole listed author is Claude — unlike OpenAI papers with human co-authors. Curran speculates Claude Fable 5.1 and Mythos 5.1 share the same weights with different guardrails, Fable 5.5 is ready to deploy, and the paper was likely written by an unreleased Mythos 5.5. All speculation, unconfirmed.

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