Anthropic unveils new versions of its most powerful AI models ahead of IPO

Anthropic has unveiled Claude Fable 5.2 and Claude Mythos 5.2, updated versions of its most powerful AI models. During prerelease testing, the models designed three working electronic devices, solved two open problems in the physics of black holes and formalised a proof of Fermat's Last Theorem in 30 hours, Anthropic said. The release comes ahead of the company's planned IPO.