Anthropic faces pushback over Claude Mythos 5's stricter safety classifiers, mandatory data retention, and token inefficiency that frustrate advanced AI

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.