Anthropic responds to Trump and "abruptly deactivates" Fable 5 and Mythos 5
The struggle between the U.S. government and Anthropic has gained a new chapter with the Trump Administration's prohibition on the technology company's international use of the most advanced versions of its Artificial Intelligence (AI) models, Fable and Mythos, with the company responding that it will "abruptly deactivate" these services.
On Friday, Anthropic announced that it will shut down its AI models for all users, going beyond the government order to block international access, which the Administration justified on national security grounds due to potential misuse to trick software. The order targeted the Fable 5 and Mythos 5 models, but no details were provided about the alleged security flaw, the technology company said in a statement.
"We received the government directive today [Friday] at 5:21 AM [10:21 PM in Lisbon]. The letter did not indicate specific details about national security concerns. Our understanding is that the Government believes it has found a method to bypass (or jailbreak) Fable 5," Anthropic said in a statement, explaining: "We reviewed a demonstration of that specific technique being used to identify a small number of already known minor vulnerabilities. All of these vulnerabilities appear relatively simple, and we found that other publicly available models can also detect them without needing to bypass the protection."
