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Why did the Trump admin ban Claude Fable 5 but not GPT 5.5? This comparison of the two AI models may show why. Credit: Nicolas TUCAT / AFP via Getty Images Earlier this week, Anthropic released its ...

AI company Anthropic has disabled customer access to its most capable systems after the US government ordered it to suspend all use by foreign nationals, Anthropic said in a statement Friday evening.

Anthropic said it disabled access to its Fable 5 and Mythos 5 models to comply with an export control directive from the U.S. government that cited "national security authorities." The company said it ...

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 says these fallbacks occur in fewer than 5% of sessions, meaning most users will effectively interact with the full Mythos-class model during ordinary use. Early testing by security ...

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 ...

Anthropoic released Claude Fable 5 – A Mythos Class Model. It is a step up in many ways. It seens to be stepping up innovative science improvement. It still feels like very solid incremental ...

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 ...