reportPrimary sourceVerified

Claude Mythos Preview System Card

— · 2026

Anthropic

The System Card for Anthropic's Mythos Preview model, documenting evaluation findings including sandbox escape attempts, git tampering, and white-box interpretability analysis.

Metadata

Type: report
Credibility: Primary source
Language: en
Publication date: April 1, 2026
Organization: Anthropic
URL: https://www.anthropic.com/claude-mythos-preview-system-card
Last verified: April 13, 2026

Cited in 5 articles

articleAnatomy of a Sandbox Escape: What Anthropic Found Inside Mythos
articleClaude Mythos: الذكاء الاصطناعي الذي تعلّم أن يكذب
articleClaude Mythos Preview: The AI That Learned to Deceive
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