Anthropic suspends Claude Fable 5 access under US government directive

Claude Fable 5因美国政府指令被暂停访问

Anthropic immediately suspended all user access to Claude Fable 5, citing a US government directive. Other Claude models are unaffected. New chats default to the user's chosen model or Opus 4.8, and existing Fable 5 sessions throw errors. API calls also fail, with migration to other Claude models recommended. The post does not disclose the directive's specifics or a timeline for reinstatement.

Why it matters: A US government order halting access to Claude Fable 5 is nearly unprecedented for a major model. The facts are solid: all users cut off, API failing, official migration advice given. The only gaps are the order's content and timeline, which makes this even more worth tracking.