Anthropic is preparing to launch Mythos 1, a powerful AI model for cybersecurity, with preview labels appearing in Claude Code and Claude Security. The model, initially restricted, may see broader release once safeguards are in place, and a new security dashboard is being developed.
Anthropic appears to be moving Claude Mythos to broader availability, with the model now helping protect a wider range of organizations. Traces of the model have already surfaced on Google Cloud and AWS through vulnerability discovery programs. A release for Mythos 1 seems imminent. Claude Opus 4.8 is also rumored to be in the works for release.
# Anthropic prepares Mythos 1 for Claude Code and Security
Source: [https://www.testingcatalog.com/anthropic-prepares-mythos-1-for-claude-code-and-claude-security/](https://www.testingcatalog.com/anthropic-prepares-mythos-1-for-claude-code-and-claude-security/)
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Anthropic appears to be moving[Claude Mythos](https://www.testingcatalog.com/anthropic-redies-powerfull-mythos-model-with-high-cybersecurity-risk/)closer to broader availability than its original guidance suggested\. 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\.
> Last month we launched Project Glasswing, our collaborative AI cybersecurity initiative\. Since then, we and our partners have found more than ten thousand high\- or critical\-severity vulnerabilities in essential software\. — Anthropic \(@AnthropicAI\)[May 22, 2026](https://twitter.com/AnthropicAI/status/2057909102542549503?ref_src=twsrc%5Etfw&ref=testingcatalog.com)
> And in the near future, once we’ve developed the far stronger safeguards we need, we look forward to making Mythos\-class models available through a general release\.
This marks a notable shift from the earlier framing, in which Anthropic stated that Mythos would remain restricted\. Traces of the model have already surfaced on Google Cloud and AWS through vulnerability discovery programs, and signals now point to a product called Mythos 1, carrying a preview label \(**"claude\-mythos\-1\-preview"**\), being prepared for Claude Code and Claude Security\.
Mythos 1[Some users were temporarily able to see](https://t.me/c/1349477688/36966?ref=testingcatalog.com)the "Mythos 1" model in the UI\. Besides that, new strings have been added to the source code recently:
> "Access to the Claude Mythos model in Claude Code and Claude Security\."
Claude SecurityThe[Claude Security](https://www.testingcatalog.com/anthropic-likely-preparing-claude-security-for-broader-release/)side of that rollout is getting structural work too\. A new dashboard is being built that surfaces discovered vulnerabilities, seven\-day and thirty\-day historical charts, and deeper triage results\. There are no indications yet that the product will move beyond enterprise customers, but the refresh brings it closer to parity with how rival security suites present scan history\.
In parallel,**Claude Opus 4\.8****is rumored to be in the works for release**, with select Anthropic partners already conducting internal evaluations\. A launch in the coming weeks would fit the cadence set by[Opus 4\.7](https://www.testingcatalog.com/anthropic-launches-claude-opus-4-7-model-on-web-apps-and-apis/)in April and would slot neatly alongside the Mythos and security product moves\.
Anthropic has unveiled Claude Mythos, a highly capable AI model designed to automatically discover security vulnerabilities in operating systems, browsers, and software libraries. Initially restricted to select enterprise and open-source partners under Project Glasswing due to dual-use risks, the release has sparked industry debate over AI security capabilities and corporate marketing tactics.
Anthropic announced Claude Mythos, a new AI model with elite-level cybersecurity capabilities including the ability to identify and exploit software vulnerabilities. The company is limiting its release to 40 corporations through Project Glasswing to allow preparation of countermeasures before wider deployment.
Anthropic announced Claude Fable 5, its most powerful widely available AI model, part of the Mythos class previously considered too dangerous for public release. The model features new safeguards that fall back to Opus 4.8 in high-risk areas.
Anthropic released Claude Fable 5 (public with guardrails) and Claude Mythos 5 (limited to partners), offering advanced cybersecurity capabilities while restricting access to prevent misuse.