White House demands Anthropic ensure perfect jailbreak prevention for Claude Fable 5
The White House has set a strict condition for Anthropic to reactivate its Fable 5 model, demanding that the company guarantee its safety filters cannot be bypassed. However, computer science experts argue that a perfectly secure model is technically impossible due to the probabilistic nature of token prediction. The dispute follows a Commerce Department export directive on June 12, 2026, three days after Fable 5 launched on June 9. The White House was reportedly alerted to safety risks by Amazon CEO Andy Jassy, forcing Anthropic to disable access globally, including for its own foreign employees. Anthropic disputed the safety concerns, stating the identified vulnerabilities were narrow and did not pose serious risks. Over 80 cybersecurity experts signed an appeal warning that blocking model access harms defensive security research by stopping researchers from testing vulnerabilities.
The White House Wants Anthropic to Block All Jailbreaks. That May Not Be Possible