Anthropic's newly released Fable model, a limited version of its Mythos cybersecurity tool, has sparked backlash from researchers frustrated with its restrictive guardrails.

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

Anthropic is releasing Claude Fable 5, its first Mythos-class model available to the public. The model comes with guardrails that block responses in high-risk areas like…