Claude Mythos 5 is Anthropic's restricted deployment of the Claude 5 base model with cybersecurity and select biology/chemistry safeguards lifted. It powers advanced vulnerability discovery, attack-surface auditing, red teaming, and threat intelligence tasks. The model is the same underlying architecture as the publicly available Claude Fable 5 but optimized for trusted-access partners in cybersecurity and research.
Read the official Anthropic launch pageFirst builds incoming — this lane fills in automatically as people start building with Mythos 5. Know one? Submit the URL.
