Anthropic released Claude Fable, its first Mythos-class AI model, yesterday and it's already causing concerns inside Microsoft. Sources tell me that Microsoft …

Cybersecurity researchers are complaining that Anthropic's new model Fable has guardrails that are too strict for any cybersecurity work.

The broad safeguards built into Anthropic's Claude Fable 5, a Mythos-class AI model, blocks some mundane requests on cybersecurity and biology.

Engineering teams building agentic coding pipelines now have a concrete open-source alternative to managed models like Claude Fable 5 — one that runs on a sing…

Anthropic's Claude Fable 5 is going to be a big hit with the web's vibe coders.

Claude subscribers can try the model until June 22 without spending usage credits.

New frontier model refuses cybersecurity, biology, and chemistry queries.

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

Anthropic said it could not yet release the full Claude Mythos 5 model, so instead it created Fable 5 with baked in safeguards.

A version of an artificial intelligence (AI) tool which the company said was too powerful to be released to the public has just been released to the public. C…

Anthropic today launched two new AI models — Claude Fable 5 and Claude Mythos 5 — marking the company’s first broad release of the powerful “Mythos-class” AI c…