ProductsProduct / feature launchSafety & Alignment · Large Language Models · Applications1 source · Oct 6, 2026

Expanding the Cyber Verification Program

We’re launching a new, expanded version of our Cyber Verification Program (CVP), which makes advanced cyber capabilities and reduced blocking classifiers available to qualifying security professionals.

ProofVendor claim only

Key points

  • Each tier includes access to our most capable models, including Claude Opus 5.5, Claude Sonnet 5.5, Claude Mythos 5.1, and new models moving forward.
  • Cybersecurity is inherently dual use: the same capabilities that enable a security team to find and fix a vulnerability can also help a malicious actor exploit it.
  • For this reason, our generally available models, such as Claude Opus 5.5, Claude Fable 5.1, and Claude Sonnet 5.5, have conservative cyber safeguards that block most cyber work.
  • For the past six months, we’ve enabled trusted access through two programs: Project Glasswing and the CVP.

Sources (1)

  • [1]Expanding the Cyber Verification Program
    Anthropic News · Oct 6, 12:00 AM
    We’re launching a new, expanded version of our Cyber Verification Program (CVP), which makes advanced cyber capabilities and reduced blocking classifiers available to qualifying security professionals.
    Each tier includes access to our most capable models, including Claude Opus 5.5, Claude Sonnet 5.5, Claude Mythos 5.1, and new models moving forward.

Extractive summary: sentences quoted from the sources.

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