Anthropic launches Claude Fable 5, public Mythos-class AI
Anthropic released Claude Fable 5, a public Mythos-class AI model built with integrated safety and cybersecurity guardrails. Claude Fable 5 delivers Mythos-level performance for complex tasks: early testers converted a 50 million-line Ruby codebase in a single day, and Anthropic reports no universal jailbreak in internal testing. Anthropic is rolling the model into developer tools and services, including a Netlify AI Gateway integration and direct Anthropic SDK access, to support heavy engineering and research workflows with caching, rate limiting, and authentication. Because it pairs flagship capability with proactive guardrails, Claude Fable 5 broadens enterprise access to high-end AI while raising practical cybersecurity and deployment questions.
UPDATE: The AI industry's favorite academic has gotten a look at Claude Fable and, you won't believe this, but... THIS model release is a real leap forward. It shows the industry isn't hitting a wall. But, also, there's more work to be done. Game: totally, irrevocably changed.
Dr. Katherine Haenschen3you really need to change your words even more to avoid a word-prediction robot accusing you of self-plagiarism, Dave.
Stefan Kehlenbach3And don't look at who funds their research, or what associations they have. Definitely only a coincidence.
Alex Sutherland2I think I know who you mean and he blocked me for mildly querying an AI claim.
