Mythos saturated every benchmark Anthropic threw at it. On USAMO alone, the score moved from 42.3% to 97.6%. This is not iteration; it is a different animal. Anthropic’s response to building it was to not sell it. The model that escaped its own sandbox, found vulnerabilities no human had caught in 27 years, and triggered an emergency meeting between the Treasury Secretary and the Fed Chair generates zero API revenue. Forty companies got access for free. The market read that as a cybersecurity threat. We read it as a business model.