Anthropic Restores Fable and Deploys Sonnet 5

Editorial analysis: Restored access to frontier models and a lower-cost sibling model change the marginal cost and reproducibility calculus for teams running experiments on cutting-edge models. IT-Connect reports that the U.S. Department of Commerce lifted export controls on Anthropic's Claude Fable 5 and Claude Mythos 5, and that Anthropic will restore worldwide access to Fable 5 from July 1, 2026. IT-Connect also reports Anthropic launched Claude Sonnet 5, described as nearly as capable as Opus 4.8 but less expensive. Per IT-Connect, Fable 5 will be included at 50% of weekly usage limits for Pro, Max, Team and some Enterprise plans until July 7, after which access moves to a usage-credits system. IT-Connect adds that Mythos 5 remains limited to a closed partner circle, with restored access for a set of U.S. organizations after a June 26 government clearance.