MythosWatch

Claude Mythos Preview access tracker

Who has access to the most powerful AI?

This site tracks publicly disclosed access to Anthropic's Mythos Preview. Every entry links to a primary source or published report. It does not claim completeness.

Access confirmed

Cohesity announced on June 5 that it has been granted access to Claude Mythos Preview as a Project Glasswing participant. The company said it will use the restricted model to surface, validate, and remediate vulnerabilities across the Cohesity Data Cloud platform and product portfolio, and highlighted that more than 70% of the Fortune Global 500 and large government customers rely on its data resilience tooling.

Open Cohesity record
Jun 5, 2026 · 1 other signal
  • HighHitachi, Ltd.Hitachi: official statement says Hitachi joined Project Glasswing and gained Claude Mythos Preview access to secure social infrastructure software including energy systemsAccess confirmed→
Disclosed access points58+18 named partners plus 40+ unknown
Official entries19Primary-source named
Reported / negotiating5NSA, UK, White House, Energy, Treasury
Blocked2Denied, unavailable, or contested

Access ledger

Named access and exclusions.

Newest first across confirmed, reported, negotiating, and blocked records.

EntityCountryStatusUpdated
Pentagon / Department of DefenseUSBlockedMay 1, 2026NSAUSReportedApr 30, 2026Bank of AmericaUSReportedApr 21, 2026CISAUSBlockedApr 21, 2026UK AI Security InstituteUKReportedApr 21, 2026China public accessCNBlockedApr 17, 2026
Department of EnergyUSNegotiatingApr 17, 2026
Department of TreasuryUSNegotiatingApr 17, 2026
Open full data table

18 named partners are overwhelmingly US-based. 40+ remain undisclosed. The NSA has reported access. The Pentagon is legally barred.