The Global Story, The Global Story, Mythos: The AI model that’s ‘too powerful’ for public release

The Global Story

The Global Story

Mythos: The AI model that’s ‘too powerful’ for public release

16 April 2026

27 minutes

Available for over a year

Anthropic, one of Silicon Valley’s leading AI firms, have built a new model which they say is too dangerous to be released to the public.

Instead, they are only giving access to Claude Mythos Preview to a handful of big companies to help them find and fix security vulnerabilities. The company says the model has already found weak spots in “every major operating system and web browser”. Is this a genuine example of an AI company acting responsibly, or more of a carefully calibrated publicity move?

We speak to the BBC’s North America tech correspondent, Lily Jamali, about whether this is a watershed moment for AI.

Producers: Viv Jones and Aron Keller

Digital producer: Matt Pintus

Mix: Travis Evans

Executive producer: James Shield

Senior news editor: China Collins

Credit: Jurassic Park (1993) / Dir: Stephen Spielberg / Universal Pictures

Photo: Anthropic CEO Dario Amodei. Reuters/Denis Balibouse.