The broad safeguards built into Anthropic's Claude Fable 5, a Mythos-class AI model, blocks some mundane requests on cybersecurity and biology.

On April 7th he declared that the latest addition to his lab’s Claude family of models, dubbed “Mythos”, is too powerful to be made widely available just yet.

According to the company, these measures stem from concerns that advanced AI systems could accelerate the development of similarly powerful competing models.