Anthropic leadership met with White House officials on Monday in emergency talks aimed at resolving a standoff over export controls imposed on Claude Fable 5, the company's consumer-facing model. After high-level discussions at the Commerce Department, both sides remain divided on whether the model poses a genuine security threat.
The restrictions were triggered last week after Amazon CEO Andy Jassy contacted Treasury Secretary Scott Bessent about alleged jailbreak vulnerabilities. Following an NSA review that concluded guardrails could be stripped from Fable 5—effectively granting access to the more powerful Mythos model and its unrestricted cybersecurity, biology, and chemistry capabilities—the Trump administration imposed export controls on the model. Anthropic subsequently cut off access for all users.
On Monday, Anthropic's chief compute officer Tom Brown and head of external affairs Sarah Heck, along with frontier red teaming lead Logan Graham and senior security researcher Nicholas Carlini, attended talks at the Commerce Department. Government participants included researchers from the Center for AI Standards and Innovation (CAISI) and Commerce Secretary Howard Lutnick, who joined by conference call from the G7 summit in Evian, France.
At the core of the dispute is a disagreement over severity. In a Friday blog post, Anthropic characterized the administration's risk assessment as exaggerated. The company reiterated this position during Monday's talks, and an open letter signed by cybersecurity researchers echoed the critique, arguing that Fable 5's safeguards were sufficiently robust for public release and that the export controls had removed "the best models away from defenders" without justification.
Katie Moussouris, founder and CEO of Luta Security, analyzed Amazon's findings and concluded the identified vulnerabilities "weren't a jailbreak per se." Moussouris and others emphasized that guardrails function as "speed bumps," slowing less-skilled actors but not blocking adversaries with technical depth.
Anthropologic has itself acknowledged significant concerns about releasing the unrestricted Mythos model to the general public. However, the company has maintained that Fable 5's safeguards are sufficient to mitigate those risks at consumer scale.
The Commerce Department expressed a willingness to restore Fable 5 access contingent on Anthropic fully resolving jailbreak concerns, but a timeline and path forward remain unclear. An Anthropic spokesperson said both parties are "working quickly to get this resolved." A White House spokesperson declined to comment.
The standoff occurs amid a broader regulatory strain: Anthropic is simultaneously engaged in a prolonged dispute with the Pentagon over military applications of its models. Amazon, one of Anthropic's largest investors, declined to detail why it raised the alarm, citing government confidentiality protocols.