Anthropic Just Built a Model Too Dangerous to Release. They Called It Mythos.

Today Anthropic announced Project Glasswing — and with it, a model they refuse to make generally available. Claude Mythos finds vulnerabilities that good. The claim isn't hype. In their own testing, Mythos wrote a browser exploit that chained four vulnerabilities together. It achieved local privilege escalation on Linux through subtle race conditions. It crafted a remote code execution exploit on FreeBSD's NFS server by splitting a 20-gadget ROP chain across multiple packets. Opus 4.6 managed...