Anthropic will let its strongest model hunt flaws in your code — but it will not let you talk to it
Anthropic put Claude Mythos 5, its most capable model, behind Claude Security on 21 August, in public beta for Claude Enterprise customers. You point it at a GitHub repository; it traces data flows across files and returns findings tagged with a CWE category, a severity rating, a confidence rating and a suggested patch. What customers do not get is a prompt box. The product hands back a scan result, which means the model capable enough to find an exploitable flaw cannot be steered into writing the exploit. Scans are billed as ordinary token usage on an existing Enterprise plan, with no separate add-on. Alongside it Anthropic announced the Defender Advantage Fund, 35 million dollars in Claude credits for organisations that patch vulnerabilities in open-source projects, and said its Cyber Verification Programme will widen to more dual-use capabilities on Opus and Sonnet.
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