[Anthropic launches Claude Fable 5.1 and Mythos 5.1](https://www.testingcatalog.com/anthropic-launches-claude-fable-5-1-and-mythos-5-1/)

Anthropic launched Claude Fable 5.1 for general use and Mythos 5.1 for vetted defenders and scientists, with lower cache-read costs, stronger benchmark results, customer-controlled data options, and access across major clouds.

 [#anthropic](?q=%23anthropic) [@testingcatalog](https://t.me/testingcatalog)