



Holy sh*t huge leak Claude Opus 5 "Mythos" leak: Claude Mythos, a new tier beyond Opus models, delivering major performance gains compared to Opus 4.6 in coding, academic reasoning, and cybersecurity, and signaling a step-change in frontier AI capability. The model is so powerful (and compute-intensive) that access will roll out slowly, starting with select cybersecurity partners to prepare for AI-driven exploits. This isn’t just a model release, it’s a preview of a new class of systems that could outpace current defenses and reshape how we think about AI risk and deployment. Take it with a grain of salt, @M1Astra is a very relaible source!













