AI is now being used to make software more secure.

Anthropic announced a new initiative called Project Glasswing that includes Apple as a partner. As part of Glasswing, Anthropic is sharing a preview of its newly unveiled Claude Mythos model with select partners, including Apple.

Anthropic says Mythos has found “thousands of high-severity vulnerabilities” in “every major operating system and web browser.”

Apple is part of Anthropic’s Project Glasswing cybersecurity initiative

Apple is among a list of top technology companies that make up Anthropic’s Project Glasswing group.

Today we’re announcing Project Glasswing, a new initiative that brings together Amazon Web Services, Anthropic, Apple, Broadcom, Cisco, CrowdStrike, Google, JPMorganChase, the Linux Foundation, Microsoft, NVIDIA, and Palo Alto Networks in an effort to secure the world’s most critical software.

Additionally, Anthropic says more than 40 additional organizations that “build or maintain critical software” have access to its Mythos Preview AI model. The goal is for these software organizations to use Mythos to discover and fix security holes before the AI model is released to the world.

Claude Mythos has found thousands of flaws in every major OS and browser

Claude Mythos has already been used to find serious security flaws in every major operating system and web browser, according to Anthropic.

Mythos Preview has already found thousands of high-severity vulnerabilities, including some in every major operating system and web browser. Given the rate of AI progress, it will not be long before such capabilities proliferate, potentially beyond actors who are committed to deploying them safely. The fallout—for economies, public safety, and national security—could be severe. Project Glasswing is an urgent attempt to put these capabilities to work for defensive purposes.

In some cases, these vulnerabilities have “survived decades of human review and millions of automated security tests,” the company says.

One example includes finding and chaining together a cybersecurity flaw in the Linux kernel that could result in complete control over a machine.

Cybersecurity expertise is just one area of strength for the new Claude Mythos AI model. Anthropic’s latest model shows gains over Claude Opus 4.6 in reasoning, agentic search and computer use, and especially agentic coding.

Anthropic has published a system card that details the latest benchmarks for Claude Mythos Preview.

Availability

“We do not plan to make Claude Mythos Preview generally available,” Anthropic says, “but our eventual goal is to enable our users to safely deploy Mythos-class models at scale—for cybersecurity purposes, but also for the myriad other benefits that such highly capable models will bring.”

You can learn more about Project Glasswing and Claude Mythos from Anthropic’s announcement here.