Anthropic's most powerful model just dropped... and you can run it in Claude Code CLI right now, no extra cost. Here's how: Update Claude Code → claude update Launch a new terminal session Type /model fable Set your thinking level and go That's it. You're now running a Mythos-class model for long, complex builds — straight from your terminal. 🔥 Here is tutorial video: https://youtu.be/D48nWj9QzSs ⚠️ Heads up: it's not the default and it burns through usage faster than Sonnet/Opus, so save it for the big, ambiguous tasks — not everyday queries. Try it and drop your results below 👇