Claude Fable 5 vs Claude Opus: What Anthropic’s New Coding Model Can Actually Do
On June 9, 2026, Anthropic released Claude Fable 5, and the naming alone tells you something changed. Fable is not the next Opus. It is the first model in a new “Mythos” class that sits above Opus in Anthropic’s lineup, which makes it a tier above the previous flagship rather than a sibling to it….






