{
  "$schema": "https://modeldeprecations.dev/api/v1/schema.json",
  "provider": "anthropic",
  "model": "claude-mythos-5",
  "name": "Claude Mythos 5",
  "aliases": [],
  "description": "The same underlying model as Claude Fable 5 with the cybersecurity and biology safeguards lifted, offered only to approved Project Glasswing customers. It shares Fable 5's specs and pricing and its own 1M context window, but it is the one current Claude id you cannot reach by signing up - access runs through an Anthropic, AWS or Google Cloud account team.",
  "released_on": "2026-06-09",
  "status": "active",
  "replacements": [],
  "sources": [
    {
      "url": "https://platform.claude.com/docs/en/about-claude/models/overview",
      "title": "Anthropic models overview",
      "accessed": "2026-08-03"
    }
  ],
  "last_verified": "2026-08-03",
  "computed_status": "active",
  "asOf": "2026-08-03"
}