Anthropic is now running its security scanner Claude Security on Claude Mythos 5. The tool scans codebases for vulnerabilities and suggests patches, available in public beta for Enterprise customers. Scans count as normal token usage. Each finding includes a CWE category (a standard way to classify software flaws), severity ratings, and a suggested fix. Humans still have to sign off on every patch.

Anthropic is also plugging Mythos 5 into partner security products protecting hospitals, utilities, and banks. End users don't interact with the model directly and only see results like suggested patches. Several partners already use Claude Opus for security tools and are expected to switch to Mythos 5. Security vendors can sign up for partnership access.

Claude Mythos is Anthropic's most capable model, especially for cyber tasks, which is why it's not broadly available. This rollout is meant to boost defenders without giving attackers new AI-powered options.