US Blocks Australians from Anthropic AI: National Security Concerns

Australians have lost access to Anthropic's most advanced AI models, Fable 5 and Mythos 5. This comes after the US government ordered the company to suspend access for foreign nationals, citing national security concerns. Fable 5 is Anthropic’s flagship general-purpose model, designed for complex problem-solving and sophisticated technical tasks. Mythos 5 is a specialized cybersecurity model, focused on identifying software vulnerabilities. The US government raised concerns about the models' safety guardrails, specifically a potential way to bypass safeguards in Fable 5. Anthropic disputes this assessment, calling it a misunderstanding and stating that officials provided only verbal evidence of a narrow bypass method. Despite this, the government directed the suspension while the issue is investigated. This situation highlights ongoing questions about who controls access to powerful AI systems and how easily that access can be removed.