Claude Fable 5 and Mythos 5: Capabilities

Don't Worry About the Vase Podcast · Jun 19, 2026 · 1h 32m

The Don’t Worry About the Vase Podcast is a listener-supported podcast. To receive new posts and support the cost of creation, consider becoming a free or paid subscriber. * 00:00:00 - Introduction* 00:01:11 - The Official Pitch* 00:04:10 - Technical Details* 00:04:34 - The System Prompt and Jailbreak* 00:06:49 - Benchmarks* 00:17:52 - Other People’s Benchmarks* 00:25:01 - The Classifiers Are Not Messing Around* 00:26:56 - The Classifiers Need Work* 00:32:26 - The Classifiers Have Consequences* 00:33:24 - First Hit Is Free* 00:34:01 - How Easily We Forget* 00:35:10 - Data Retention Is An…