TL;DRAmazon’s Jassy reportedly told the government that researchers used Fable 5 for cyberattack info. That triggered the order to shut down Fable 5 and Mythos 5.
Amazon CEO Andy Jassy was reportedly the source of security concerns that led the US government to force Anthropic to shut down Fable 5 and Mythos 5 for every customer on Friday. The Wall Street Journal reported that Jassy told Treasury Secretary Scott Bessent and other officials that Amazon researchers used Fable 5 to obtain information that could be used in cyberattacks. The government then imposed an export control ban on both models.
The revelation adds an uncomfortable dimension to the story. Amazon is one of Anthropic’s largest investors, having put in billions and receiving a $100 billion cloud spending commitment in return. The company that bankrolls Anthropic’s infrastructure is also the one that told the government its models are dangerous.
An Amazon spokesperson said it is “not uncommon for governments to seek our counsel on potential security risks” but declined to share details of the discussions. The spokesperson also pointed to an AWS status update confirming that Amazon’s own cloud platform was affected by the model shutdown.
