Many AI researchers worry that increasingly powerful AI systems could help bad actors carry out cyberattacks on banks, power grids or other critical infrastructure.

Anthropic Tuesday publicly released Claude Fable 5, its first “Mythos-class” model that it says surpasses its previous frontier Opus models in overall capabilities. But the model’s launch today comes ...

Fable 5 is a nerfed version of Anthropic's Mythos model. Turns out it was actually too nerfed, and the company is sorry. Reading time 2 minutes Anthropic’s Fable 5 model is the nerfed version of ...

Anthropic released its latest model Tuesday afternoon, heralding the public’s first access to the AI company’s most powerful class of AI systems. Limited time: Save 25% on NBC News subscription Get ...

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Anthropic on Thursday admitted that it "made the wrong trade-off" when it released the Claude Fable 5 model a few days ago, according to multiple media reports. The announcement from Anthropic came ...

As AI models get more powerful, there’s also going to be a level of danger. Anthropic announced Mythos not long ago as a model that was too dangerous for public availability, but a new version of that ...

Anthropic has revised a safeguard policy for its newly released Claude Fable 5 AI model. This move comes after criticism from researchers and developers over restrictions that were not clearly ...

The Fable 5 announcement also focuses on software engineering, where Anthropic believes the model’s gains are particularly significant. During testing, Stripe, for example, reportedly used Fable 5 to ...

Add Yahoo as a preferred source to see more of our stories on Google. INDIA - 2026/05/06: In this photo illustration, an Anthropic logo is seen displayed on a smartphone with a Claude mythos logo in ...