Anthropic expanded access to its top AI model Mythos to 150 new institutions across critical infrastructure sectors like power, water, and healthcare, raising total authorized users to 200. The move aims to bolster cybersecurity defenses, with early partners already finding over 10,000 vulnerabilities. Critics warn of misuse risks as Mythos also has advanced hacking capabilities. Anthropic anticipates rival models without safeguards within a year. The company also secretly filed for IPO, with a $96.5 billion valuation.