Anthropic is testing Mythos 5.0, a model so potent it scares them
Anthropic just started testing Claude Mythos 5.0 with select early-access users after internal leaks revealed the new flagship. Sitting above the Opus tier, it brings a step change in coding, reasoning, and cybersecurity. Why it matters: The lab is being unusually cautious with rollout, as the model's offensive cyber capabilities are advanced enough to outpace current defenses.