The United States has effectively banned access to two of Anthropic's most advanced AI models—Claude Fable 5 and Mythos 5—for any foreign nationals, whether they live inside or outside the country. The order, issued by the Trump administration, has forced Anthropic to shut down both models worldwide for non-US users.

According to reporting from MSN, the administration directed Anthropic to block foreign nationals from accessing the models entirely. Fox Business reports the White House says Anthropic's own "recklessness" triggered the export controls, though the specific conduct cited has not been detailed publicly.

Anthropoc has not accepted the situation quietly. According to Moneycontrol, the company has dispatched senior technical staff to Washington to negotiate, with talks centered on national security concerns. The ban remains in place as those discussions continue.

The fallout has reverberated well beyond Silicon Valley. According to The Decoder, the European Commission is now assessing the implications of the shutdown for European researchers and institutions. The episode has ignited a debate within Europe over AI sovereignty: should the bloc invest in building its own homegrown foundation models, or pursue binding access agreements with US providers? The Decoder notes that building independent infrastructure remains a significant challenge.

Cybersecurity experts have weighed in as well. According to Infosecurity Magazine, security professionals are urging the US government to lift the ban, arguing that restricting access to frontier AI models could hinder defensive security work globally.

Meanwhile, a Xiaomi executive has publicly characterized Fable 5 as merely an "interim stage," suggesting that China's technology sector views the current models as a temporary benchmark rather than an endpoint.

The episode marks a turning point: when a single government's decision can instantly switch off advanced AI for the rest of the world, questions about who controls the infrastructure of intelligence—and on whose terms—are no longer theoretical.