Anthropic's New Fable 5.2 Crushes Opus 5.5 and Ranks FIRST Worldwide

Anthropic’s Claude Fable 5.2 beats Opus 5.5 and tops the Artificial Analysis Intelligence Index. A team of 1,000 agents formalizes Fermat’s proof in 30 hours, while other tests show major gains in coding, physics, and robot control. Meanwhile, Anthropic limits its AI research abilities, and lower token prices hide potentially higher bills. 📩 Brand Deals & Partnerships: [email protected] ✉️ General Inquiries: [email protected] 🔍 What You'll See Claude Fable 5.2 ranks first among 74 models on the Artificial Analysis Intelligence Index, scoring 65. SOURCE: https://artificialanalysis.ai/models/claude-fable-5-2 Anthropic reports 1,000 Fable agents formalize Fermat’s proof in 30 hours, alongside major robotics and physics advances. SOURCE: https://www.anthropic.com/claude-fable-and-mythos-5-2 Fable and Mythos 5.2 share one underlying model, with different safeguards and access rules for sensitive tasks. SOURCE: https://www.macrumors.com/2026/11/09/anthropic-launches-claude-fable-5-2/ Fable cuts token prices by 20% and beats GPT-6 Astra on Anthropic’s coding and robotics tests. SOURCE: https://artificialwatch.com/wire/anthropic-releases-claude-fable-5-2-and-mythos-5-2-at-8-40 🚨 Why It Matters AI can now coordinate large teams of agents, tackle difficult research, and work through complex projects for days. Fable’s gains raise the stakes for coding and robotics, while its deliberately limited AI research skills bring recursive self-improvement into focus. Stronger results also come with tradeoffs in cost and speed. #AI #fable5.2 #Anthropic