Xinzhiyuan reports The moment Claude 5.2’s “Twin Stars” were released, the AI world was buzzing again! This morning, Anthropic finally unveiled its next-generation dual flagship models—Fable 5.2 and Mythos 5.2. Not only did it complete the formalization of Fermat’s Last Theorem in 30 hours, Anthropic’s new dual champions, Fable 5.2 and Mythos 5.2, have genuinely grown hands this time! The four pre-release “real-world challenge tests” just released by the o