[Anthropic's Next-Generation Model Claude Mythos Is Under Testing, Anthropic States It 'Poses Unprecedented Cybersecurity Risks'] Deep Tide TechFlow reports on March 27, according to Jintou Data, leaked documents from Anthropic reveal that the next-generation powerful model Claude Mythos is currently under testing. Anthropic believes it 'poses unprecedented cybersecurity risks.' Musk commented on this, saying: 'Deeply concerning.'