Anthropic suspended access to its newly launched Fable 5 model and the restricted Mythos 5 model on Friday after receiving a US national security order prohibiting foreign nationals, including Anthropic employees, from accessing the systems.
The move came just three days after Fable 5’s public release and represents a major setback for Anthropic’s commercial rollout. The government reportedly raised concerns over a potential jailbreaking method that could enable malicious cyber capabilities, though Anthropic disputes the severity of the finding and argues similar risks exist across frontier AI models.
The suspension adds to Anthropic’s broader tensions with the Trump administration, including disputes over military and surveillance applications that have already contributed to the loss of Pentagon contracts.
Trade analysis
While Anthropic’s models remain among the strongest technically, the sudden government intervention creates a meaningful near-term headwind, as high-liquidity prediction markets may weigh deployment scale and enterprise adoption.
Bullish (YES) signals for Anthropic:
- The suspension seems to come from geopolitical concerns rather than model performance
- Mythos 5 reportedly remains a leading frontier model with unrivalled capabilities
Bearish (NO) signals for Anthropic:
- Fable 5’s abrupt shutdown disrupts enterprise adoption and removes a key commercial advantage during a critical evaluation period
- Continued clashes with the Trump administration could limit government and defense-related growth opportunities
A disciplined strategy is to reduce exposure to Anthropic until there is clarity on whether Fable 5 can return to market. Our base case shifts toward a more competitive June finish, with Anthropic’s technical lead now challenged by regulatory constraints rather than model quality.