Anthropic believes it has found a structure inside Claude that resembles a major neuroscience theory about how conscious thought works. The company says Claude appears to use an internal system called ...

Single neurons in mouse sensorimotor cortex are organized by their activity features into distinct subpopulations with area-spanning footprints whose boundaries align closely with anatomical and ...

After being taken down by order of the US government, Fable 5 is returning to Claude’s model library. Because of the new restrictions, Fable 5 might just be Opus 4.8 in a mask. Anthropic says Fable 5 ...

The subthalamic nucleus contains subpopulations with different contributions to deliberative decision-making based on noisy evidence and reward-driven preferences.

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 is finally giving the public a taste of its next-generation model, but its blunt safety barriers are angering some artificial-intelligence developers and users—and feeding a growing debate ...

Anthropic today announced the launch of Claude Fable 5, a Mythos-class model that it says is safe for general use. According to Anthropic, Fable 5's capabilities exceed those of any model it has made ...

If you want to test out Fable 5 without paying extra, you need to try it before the end of the month. Katelyn is a reporter with CNET covering artificial intelligence, including chatbots, image and ...

Anthropic said its powerful new AI model, Mythos, could be dangerous in the wrong hands. WSJ’s Nicole Nguyen explains why and shares some cybersecurity tips for the average tech user. Photo: Sean ...

Anthropic launched Claude Fable 5 on June 9, 2026, calling it the most capable model it has ever released to the general public. Alongside it, the company released Claude Mythos 5 for a small group of ...

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 ...

For developers, Fable 5 is available through the Claude API as claude-fable-5. Anthropic says Fable 5 is fully available today on the Claude API and on consumption-based Enterprise plans. For ...