What is Claude Mythos? A Full Analysis of Anthropic’s Strongest AI Model Leak in History: Capybara Tier, 6 Core Capabilities, and API Access Outlook
On March 26, 2026, an accidental data leak brought Anthropic's most mysterious AI model to light: Claude Mythos, described by Anthropic officials as "our most capable model to date," representing a "step change" in AI capabilities. This wasn't a planned release. A configuration error in Anthropic's content management system led to approximately 3,000 unpublished blog…
