Anthropic Ships Claude Fable 5.1, Restricted Mythos 5.1 — SkimNews
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- Anthropic unveiled Claude Fable 5.1, generally available, and Claude Mythos 5.1, limited to trusted partners with cybersecurity and life sciences safeguards
- Anthropic describes both models as among "the world's most advanced models for coding and knowledge work," positioning them as new flagships
- Claude Fable 5.1 pricing includes a 75% cost reduction on Fable cache reads, per Slashdot's headline, sharpening Anthropic's pricing in the enterprise market
- The Verge reports Anthropic claiming the new model is "up to 45 per[cent]" (figure cut off in excerpt) on a key performance metric
- Fortune flags "anti-distillation mechanisms" as a built-in feature of the new models, alongside standard safeguards
- Business Today headlines the launch with "lower costs, fewer AI restrictions," a framing other outlets do not lead with
Why it matters: Anthropic is splitting its roadmap in two — a broadly available flagship (Fable 5.1) and a locked-down tier (Mythos 5.1) gated to trusted partners in cybersecurity and life sciences — while cutting cache-read pricing 75%, per Slashdot, putting pressure on rivals' enterprise margins.
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