Anthropic's Mythos 1 Surfaces in Claude Code and Claude Security

Anthropic's powerful AI cybersecurity model is breaking out of the lab. Traces of the model have surfaced on Google Cloud and AWS through vulnerability discovery programs, and signals now point to a product called Mythos 1 — carrying the preview label "claude-mythos-1-preview" — being prepared for Claude Code and Claude Security. Some users briefly spotted the "Mythos 1" model in the UI, and new source code strings now read: "Access to the Claude Mythos model in Claude Code and Claude Security." This marks a notable shift from Anthropic's earlier framing, in which the company stated that Mythos would remain restricted. A recent Project Glasswing update notes that the model is now helping protect a wider range of organizations, including open-source projects, and adds that Mythos-grade models could reach the public once the right safeguards are in place. Meanwhile, a new Claude Security dashboard is being built that surfaces discovered vulnerabilities, seven-day and thirty-day historical charts, and deeper triage results. In parallel, Claude Opus 4.8 is rumored to be in the works, with select Anthropic partners already conducting internal evaluations — a launch in coming weeks would fit the cadence set by Opus 4.7 in April.