Anthropic Unleashes Mythos-Class AI Model Months After Private Rollout Rocked the Industry

Pages from the Anthropic website and the company’s logos are displayed on a computer screen in New York on Feb. 26, 2026. AP Photo/Patrick SisonArtificial intelligence giant Anthropic released a “Mythos-class” model to the public on June 9, two months after the company rolled out the Mythos model only to a limited number of government and industry users over concerns it could be weaponized by the wrong people.In a blog post on Tuesday, Anthropic said it was launching Claude Fable 5, a model like Mythos that the company said it “made safe for general use.”