Background and Temporary Restrictions
The U.S. Department of Commerce has withdrawn export control restrictions on Anthropic’s Claude Fable 5 and Mythos 5 AI models, ending an 18 day period during which global access was blocked. Commerce Secretary Howard Lutnick informed Anthropic in a June 30 letter that a license is no longer required for export, reexport, or in country transfer of these systems. The Bureau of Industry and Security initially ordered Anthropic to suspend access for all foreign nationals on June 12, citing national security concerns and potential jailbreak vulnerabilities flagged by Amazon executives and NSA reviewers. The directive forced Anthropic to disable both models for every customer, even as over 100 cybersecurity researchers argued the blanket ban was harming legitimate defensive security work. A partial reprieve came on June 26, when limited Mythos 5 access was granted to government approved organizations and trusted partners.
Conditions for Lifting and Current Status
The Commerce Department’s decision cites Anthropic’s commitments to proactively detect and report security risks, collaborate with the government on release protocols for current and future models, and disclose any malicious activity involving Fable or Mythos. The Bureau of Industry and Security determined that updated diversion risk evaluations for both models justified withdrawing prior restrictions, though Commerce explicitly reserves the right to reimpose licensing requirements if Anthropic fails to meet its obligations or circumstances change. Anthropic confirmed via X that it will begin restoring customer access to Fable 5 on July 1, with Mythos 5 already partially reinstated the prior week. The company also launched Claude Sonnet 5, featuring a 1 million token context window and more affordable pricing tiers.
Source: Cyber Security News
