The model Anthropic only trusted cyberdefenders with — now public: 🏆 SOTA on nearly every benchmark — #1 on FrontierCode and CursorBench ⚡ Stripe: 50M-line codebase migration in 1 day (was 2+ months) 👁️ Beat Pokémon FireRed with raw screenshots — no harness needed 🧬 Protein design steps ~10x faster 🛡️ Same weights as Mythos 5, safety classifiers added (under 5% fallback to Opus 4.8) 💰 $10/$50 per M tokens via API — claude-fable-5 🎁 FREE on Pro, Max and Team plans until June 22