AI company restricted access to Fable 5, its most powerful Mythos model, for months over cybersecurity concerns
Anthropic, the maker of the Claude artificial intelligence (AI) models, made a new version of its technology available to the general public on Tuesday while restricting its use in sensitive areas.
Dubbed Fable 5, the model is the first to be made widely available from the company’s new Mythos class – its most advanced lineup of AI technology, unveiled in April but restricted to a small set of partner institutions for months over cybersecurity concerns.
Anthropic promoted Fable 5 as useful for writing and debugging software code, answering complex research questions and analyzing images.
In parallel, Anthropic is offering an unrestricted version, Claude Mythos 5, to companies and organizations that already have access to this model family – including cybersecurity partners enrolled in its Project Glasswing program.










