You wired up claude-fable-5, shipped your integration, and then every call started failing. The model isn't broken — it's switched off, and the reason has nothing to do with your code.
Why Is Fable 5 Offline? The Export-Control Directive Explained
Fable 5 is currently unavailable because U.S. export-control authorities ordered Anthropic to suspend it. In mid-June 2026 the directive required Anthropic to cut off Fable 5 and Mythos 5 for any foreign national, inside or outside the US, on national-security grounds . Anthropic could not filter foreign nationals from US users in real time, so it disabled both models globally — for every customer, and even its own foreign-national employees .
Quick Answer: Fable 5 and Mythos 5 launched June 9, 2026 and were suspended around June 13 after a U.S. export-control directive. Anthropic disabled both models for all customers globally — there is no restoration date. Opus 4.8, Sonnet, and Haiku stay live and unaffected.
The two models went live on June 9, 2026 and were pulled roughly four days later . Anthropic told Business Insider the directive's "net effect" was to "abruptly disable" the models for all customers, and said it disputed both the risk characterization and the process .
