The US government has ordered the immediate suspension of access to Anthropic's new AI models, Fable 5 and Mythos 5, citing national security concerns. Anthropic complied, shutting down access to the models worldwide. Other Claude models remain unaffected.
The ban even extends to Anthropic's own foreign employees.
The government claims to have detected a "jailbreak" method that bypasses the firewall in the models. Anthropic argues that this vulnerability is exaggerated and that similar situations exist in all other models on the market, including OpenAI's GPT-5.5.
There are two possibilities here: Either this is a jailbreak incident, Or it's a PR stunt to increase the models' popularity. You can read their statement here: Statement on the US government directive to suspend access to Fable 5 and Mythos 5
The ban even extends to Anthropic's own foreign employees.
The government claims to have detected a "jailbreak" method that bypasses the firewall in the models. Anthropic argues that this vulnerability is exaggerated and that similar situations exist in all other models on the market, including OpenAI's GPT-5.5.
There are two possibilities here: Either this is a jailbreak incident, Or it's a PR stunt to increase the models' popularity. You can read their statement here: Statement on the US government directive to suspend access to Fable 5 and Mythos 5
