US Government directive to suspend access to Fable 5 and Mythos 5
5 hours ago
- #Export Control
- #Model Safeguards
- #National Security
- The US government issued an export control directive, citing national security concerns, to suspend access to Fable 5 and Mythos 5 for all foreign nationals, including Anthropic employees.
- Anthropic must disable Fable 5 and Mythos 5 for all customers to comply, while other models remain unaffected.
- The directive, received at 5:21pm ET, did not specify details, but is believed to relate to a method of bypassing Fable 5's safeguards.
- Anthropic reviewed a demonstration showing minor vulnerabilities that other public models can also discover without a bypass.
- Anthropic defends its safeguards, stating they are strong, tested extensively, and more effective than previous models, with no universal jailbreaks found.
- They argue perfect jailbreak resistance is impossible, adopting a defense in depth strategy to make jailbreaks narrow or expensive, with monitoring and data retention to mitigate risks.
- No concerning non-universal jailbreaks leading to harmful results have been disclosed; potential ones are benign or minor.
- The government's evidence is a narrow, non-universal jailbreak, such as asking the model to fix software flaws, which Anthropic says is widely available in other models.
- Anthropic complies with the directive but disagrees, believing it would halt new model deployments if applied across the industry.
- They call for a transparent, fair statutory process for blocking unsafe deployments and apologize for the disruption, working to restore access.