@vasuman: As a result of a US government directive, we are suspending access to Claude Fable 5 for all users. You can continue to…
Summary
Anthropic announces suspension of Claude Fable 5 for all users due to a US government directive; users can continue using other Claude models like Opus 4.8.
View Cached Full Text
Cached at: 06/14/26, 07:38 AM
As a result of a US government directive, we are suspending access to Claude Fable 5 for all users. You can continue to use all other Claude models. Here’s what this means for you: Across Claude products, new sessions will run on your selected default model or Opus 4.8, and x.com/AnthropicAI/st…
ClaudeDevs (@ClaudeDevs): As a result of a US government directive, we are suspending access to Claude Fable 5 for all users. You can continue to use all other Claude models.
Here’s what this means for you:
Across Claude products, new sessions will run on your selected default model or Opus 4.8, and
Similar Articles
Anthropic Says It’s Taking Claude Fable 5 Offline to Comply With US Government Order
Anthropic disables its Claude Fable 5 and Mythos 5 AI models after receiving a US government export control directive citing national security concerns, escalating tensions between the company and the Trump administration.
US government directive to suspend access to Fable 5 and Mythos 5
The US government has issued an export control directive to suspend access to Anthropic's Fable 5 and Mythos 5 models due to national security concerns, citing a potential jailbreak method. Anthropic is complying by disabling access for all customers, but disputes the severity of the vulnerability.
Quoting Claude Opus 5 system prompt
Simon Willison quotes the Claude Opus 5 system prompt, which instructs the model to accurately and matter-of-factly address the temporary suspension of Claude Fable 5 and Claude Mythos 5 due to US export controls and their subsequent reinstatement.
@mattshumer_: So uh, Fable will be useless? Apparently coding work will fall back to Opus.
Anthropic announces redeployment of Claude Fable 5 with new classifiers to block cybersecurity tasks, potentially limiting routine coding and pushing users to Opus.
Quoting Anthropic
Anthropic announced that the US Department of Commerce has lifted export controls on its Claude Fable 5 and Mythos 5 models, with access restoration beginning the following day.