Mythos

Anthropic🇺🇸 United States
active

Version History

1.0major

Anthropic released Mythos, a security-focused AI model designed to identify and exploit zero-day vulnerabilities. The model remains unreleased publicly due to security concerns.

1.0-previewmajor

Mythos is Anthropic's new frontier model, positioned as larger and more intelligent than its Opus models. It is deployed exclusively through Project Glasswing for defensive cybersecurity work with 40+ vetted partner organizations, with claims of identifying thousands of zero-day vulnerabilities during early testing.

Previewmajor

Anthropic released Mythos as a limited preview with major cybersecurity capabilities and implications. The model has both offensive and defensive cyber applications.

Coverage

model releaseAnthropic

Trump officials encourage banks to test Anthropic's Mythos model for security vulnerabilities

U.S. Treasury Secretary Scott Bessent and Federal Reserve Chair Jerome Powell summoned bank executives this week and encouraged them to test Anthropic's newly announced Mythos model for detecting security vulnerabilities. According to Bloomberg, major banks including Goldman Sachs, Citigroup, Bank of America, and Morgan Stanley are already testing the model alongside JPMorgan Chase, despite Anthropic's stated plan to limit initial access.

2 min read
model releaseAnthropic

White House officials questioned tech CEOs on AI security ahead of Anthropic's Mythos release

Vice President JD Vance and Treasury Secretary Scott Bessent held a call with leading tech CEOs including Anthropic's Dario Amodei, OpenAI's Sam Altman, and Google's Sundar Pichai to discuss AI model security and cyber attack response. The meeting occurred one week before Anthropic released its Mythos model, which has major cybersecurity implications and raised concerns at the Federal Reserve and among top U.S. banks.

3 min read
model releaseAnthropic

Anthropic limits Mythos release to enterprises, citing security risks and blocking distillation

Anthropic announced it is limiting Mythos, its newest model, to large enterprises and critical infrastructure operators rather than releasing it publicly, claiming the model's ability to discover software security exploits poses risks. The restricted rollout strategy mirrors planned approaches by OpenAI and may serve dual purposes: managing security concerns while preventing smaller competitors from using distillation techniques to replicate frontier model capabilities.

3 min read
model releaseAnthropic

Anthropic previews Mythos, claims it found thousands of zero-day vulnerabilities in cybersecurity initiative

Anthropic unveiled a preview of Mythos, a frontier model it claims is the most powerful in its Claude lineup, for use in Project Glasswing—a cybersecurity initiative with 40+ partner organizations. According to Anthropic, Mythos identified thousands of zero-day vulnerabilities, many critical and up to two decades old, during early testing. The model will not be made generally available and is restricted to defensive security work by vetted partners.

2 min read