Unverified claim: Anthropic launches 'Fable/Mythos 5.2', $8/M tokens, Fermat proof

xiaohu · x · 2026-11-10

Chinese blogger xiaohu relays an unverified — likely fabricated — announcement that Anthropic released "Claude Fable 5.2" and "Claude Mythos 5.2" flagship models. Claimed highlights: 1,000+ coordinated sub-agents wrote a bootable OS from scratch in 8 days and completed a 100% Lean proof of Fermat's Last Theorem in 30 hours; solved two black-hole quantum gravity problems; predicted 28/34 AAV capsid structures; achieved 64.9% on RoboDojo Sim robotics; pricing cut to $8/$40 per million tokens with up to 30% faster generation. Fable is open to all users while Mythos is gated behind Cyber/Life Sciences verification programs. The claims far exceed known model capabilities and should be treated as rumor.

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