<p>shutdown followed a US government export control directive citing national security authorities. All other Anthropic models, including Opus 4.8, remain available.</p> <p>The post <a href="https://www.marktechpost.com/2026/06/13/anthropic-disables-claude-fable-5-and-mythos-5-after-us-government-order/">Anthropic Disables Claude Fable 5 and Mythos 5 After US Government Order</a> appeared first on <a href="https://www.marktechpost.com">MarkTechPost</a>.</p>