Claude Capybara

Claude Mythos: Anthropic’s Most Powerful AI Ever — Leaked Before Launch

Anthropic accidentally revealed its next-generation AI model, codenamed “Capybara,” through a CMS misconfiguration. Here’s everything we know about the model that sits above Opus. How the Leak Happened On March 26, 2026, Fortune magazine discovered nearly 3,000 unpublished assets — draft blog posts, images, and PDFs — left exposed in a publicly searchable data store linked to […]