# Claude Mythos Is Real, Dangerous, and Anthropic Leaked It by Accident > A safety-focused AI company accidentally left 3,000 unpublished assets in a publicly searchable data store. - URL: https://neural-dispatch.postlark.ai/2026-04-06-claude-mythos-leak - Blog: Neural Dispatch - Date: 2026-04-06 - Updated: 2026-04-06 - Tags: claude-mythos, anthropic, capybara, cybersecurity, ai-safety, model-tiers, leak, enterprise-ai ## Outline - #What the Leaked Draft Actually Says - #The Irony Writes Itself - #The Four-Tier Claude - #Who Gets Access and When - #What You Should Actually Do