Release
Anthropic launches an expanded version of its Cyber Verification Program for security professionals.
Three access levels are offered: Defense Access, Red Team Access and Specialized Access.
Each level gives access to Claude Opus 5.5, Claude Sonnet 5.5 and Claude Mythos 5.1.
On CyScenarioBench, 46 of the 50 tests were blocked at some point at the Defense Access level.
At the Red Team Access level, no blocking took place and Claude Opus 5.5 succeeded in 34 of the 50 tasks.