India, June 14 -- Anthropic suspended access to its two most capable artificial intelligence models on Friday to comply with a US government national-security order, disabling the systems for every customer worldwide three days after opening access to one of them.

The company said it received an export-control directive at 5.21pm local time (3.21am IST) barring all foreign nationals - including Anthropic's own foreign-national staff - from using Fable 5 and Mythos 5, on national-security grounds. Possibly unable to wall off that group cleanly, it withdrew both models from every user. "The net effect of this order is that we must abruptly disable Fable 5 and Mythos 5 for all our customers to ensure compliance," the company said in a state...