Anthropic launches Fable 5.2 and Mythos 5.2 with price cuts ahead of IPO

Anthropic launched Claude Fable 5.2 and Mythos 5.2, upgrades it says improve coding, reasoning and vision and generate responses up to 30% faster than their predecessors. Fable is available broadly with stronger cybersecurity and biology safeguards, while Mythos—built on the same underlying model with fewer safeguards—is restricted to organizations approved through the company’s Cyber and Life Sciences verification programs. Both models are priced at $8 per million input tokens and $40 per million output tokens, down from the previous Fable version; an optional fast mode offers up to 2.5 times faster generation at twice the standard rates. Anthropic says the models are intended for unusually demanding technical work and recommends Opus 5.5 for most routine coding and knowledge tasks; the launch comes as the company prepares for a possible IPO later this month.