Claude Fable 5 is the first Mythos-class intelligence model to be generally available, and I got early access to test it before launch. In this episode, I walk through what Anthropic is promising, what actually stood out when I used it on real work, and where I think it fits in your AI stack.
—
In this episode, we cover:
() Introduction: Fable 5 is finally here
() What Anthropic says about the model
() Token-intensive by design
() Safety classifiers and the new fallback concept
() Is this or is this not Mythos?
() New product launches: Managed Agents and more
() Crushing benchmarks
() What it’s actually like to use (the good and the bad)
() Test 1: product graph spec
() Test 2: designing a skills registry
() Conservative on execution
() Test 3: multi-agent orchestration
() My takeaways
—
Tools referenced:
• Claude Fable 5: https://www.anthropic.com/news/claude-fable-5-mythos-5
• Claude Managed Agents: https://platform.claude.com/docs/en/managed-agents/overview
—
Other reference:
• SWBench Pro benchmark: https://www.swebench.com/
—
Where to find Claire Vo:
ChatPRD: https://www.chatprd.ai/
Website: https://clairevo.com/
LinkedIn: https://www.linkedin.com/in/clairevo/
—
Production and marketing by https://penname.co/. For inquiries about sponsoring the podcast, email jordan@penname.co.




