Cybersecurity Experts Urge US to Lift Export Ban on Anthropic's Frontier AI Models (infosecurity-magazine.com)

• US export ban on Anthropic models Mythos 5 and Fable 5 imposed June 12, 2026
• 54 cybersecurity experts signed open letter urging lifting of ban
• Experts cite equivalent capabilities in GPT-5.5, Claude Opus, Kimi 2.7

"Over 50 cybersecurity professionals have called on the US government to lift the export ban on Anthropic's Mythos 5 and Fable 5 models, imposed on June 12, 2026, citing national security. They argue that equivalent capabilities exist in other publicly available models and that the ban harms defenders and creates market uncertainty."