The new model, called Fable 5, is set to be rolled out on Tuesday with guardrails that prevent it from responding to certain types of queries, including those related to cybersecurity and biology

Anthropic launched Claude Fable 5 on Tuesday, a Mythos-class model with safeguards blocking cybersecurity and biology queries, priced at $10 per million input tokens.

Anthropic has released a full version of its cybersecurity-centric Claude Mythos model—along with a safer version for the general public.