Anthropic releases Claude Fable 5.2 and Mythos 5.2, 30% faster and 20% cheaper

What happened

Pricing for the new generation is $8 per million input tokens and $40 per million output tokens, about 20% below the 5.1 generation.

The two models are available on different terms. Fable 5.2 is generally available. Mythos 5.2 is limited to vetted organisations through Anthropic's Life Sciences and Cyber Verification programmes.

Mythos 5.2 is described as the same underlying model as Fable 5.2, but without certain cybersecurity and biology safeguards. That is why access is restricted to organisations Anthropic has vetted.

Speaking to CNBC, Anthropic's Dianne Penn said: "We called for pacing, not pausing."

Why it matters for creators

Frontier language models increasingly write scripts, shot lists and prompts for video pipelines, so speed and price changes affect the cost of creator tooling.

A model that answers up to 30% faster shortens the planning steps of a project, such as drafting a script or iterating on prompts. A price cut of about 20% lowers the cost of running those steps at volume, which matters most for teams and tools that send large numbers of requests.

For most creators, Fable 5.2 is the relevant model, since it is the one that is generally available.