Anthropic shut down Claude Mythos 5 under US export controls, now negotiating with Trump admin

Anthropic 与政府就 Claude Mythos 5 的冲突内幕

The US Commerce Department issued an export control order last Friday requiring Anthropic to block all foreign nationals—including its own non-US employees—from accessing Mythos 5 and Fable 5. Anthropic fully disabled both models and sent executives to Washington to negotiate with Treasury Secretary Bessent and Commerce Secretary Lutnick. Anthropic argues the jailbreak cited by the government is narrow and non-universal, and that OpenAI's GPT-5.5 can achieve the same capability. Amazon CEO Andy Jassy may have reported red-team findings to the government, but Anthropic says the same conclusion holds for GPT-5.5. The post doesn't disclose the status of negotiations or when the models might return.

Why it matters: Direct confrontation between Anthropic and the US government over flagship model export controls, involving model shutdowns, executive-level DC negotiations, and a jailbreak dispute — extremely high information density and conflict intensity. All three HKR axes hit, a must-wri...