Anthropic expands Claude Mythos vulnerability scanning to 150 organizations across 15+ countries

Anthropic is expanding its Project Glasswing initiative to approximately 150 organizations across more than 15 countries, giving them access to Claude Mythos for identifying critical software vulnerabilities. The company announced the expansion on Tuesday, one day after filing confidentially for an IPO following a $65 billion funding round at nearly a $1 trillion valuation.

Claude Mythos deployment details

Claude Mythos, which Anthropic describes as its most powerful model, is designed to identify thousands of zero-day vulnerabilities over several weeks. The model initially launched in early April with 50 partners, including the U.S. government.

The expanded deployment targets organizations in critical infrastructure sectors that weren't well-represented in the initial cohort: power, water, healthcare, communications, and hardware. According to Anthropic, most partners selected maintain codebases where a major attack could affect more than 100 million people.

Geographic and organizational scope

According to The Financial Times, citing a person familiar with the matter, the expansion includes organizations in countries aligned with the U.S.: Australia, Canada, France, Germany, Italy, Switzerland, the Netherlands, Spain, Belgium, Sweden, India, Japan, New Zealand, and South Korea.

The FT reports that organizations granted access include U.S.-based Okta, South Korean companies Samsung, SK Hynix, and SK Telecom, NATO, and the EU's cyber security agency ENISA. TechCrunch has reached out to Anthropic for confirmation.

Competitive landscape

Anthropic says it expects other AI companies to soon develop models as capable as Mythos Preview, driving the urgency to establish safeguards within Project Glasswing. Since Mythos launched, OpenAI has released GPT-5.5-Cyber, its own cybersecurity-focused model, which according to Anthropic is being rolled out to a large group of partners for testing.

What this means

The expansion of Claude Mythos to critical infrastructure represents a significant deployment of AI for offensive security research at scale. By focusing on organizations where successful attacks could affect 100+ million people, Anthropic is positioning AI-powered vulnerability discovery as essential infrastructure defense. The rapid competitive response from OpenAI suggests the major AI labs view cybersecurity applications as a key differentiation point, particularly for enterprise and government sales. The geographic distribution across U.S.-aligned countries also indicates these capabilities are becoming geopolitically strategic assets.