The Fable and the Opus

Anthropic’s New Model, Measured as a Code Reviewer — A fable is a story that speaks: Latin fabula, from fari, “to speak”, and in the genre as Aesop and La Fontaine practiced it, the speaking is done by animals. An opus is a work: the crafted thing itself, named for its workmanship. Today, June 9, 2026, Anthropic released Fable 5, a new model positioned above Opus 4.8 and priced at twice Opus’s…