News about Claude Fable 5.1

All our analysis about Claude Fable 5.1 (Anthropic), newest first.

Anthropic launches Claude Fable 5.1 and Mythos 5.1: more performance, lower cost and first scientific advances · 2026-09-03
Anthropic cuts Fable 5.1 prices by up to 45% and loosens censorship, amid the agentic AI price war · 2026-09-02