Claude Mythos is GA!... Kinda.
www.anthropic.com/news/claude-...
They just announced Fable 5, a "Mythos class" model.
It scores 80.3% on SWE bench vs Opus' 69.2%...
The catch is that it's 2x the cost of Opus 5.8.
Today we’re launching Claude Fable 5: a Mythos-class model that we’ve made safe for general use.
