Google， Microsoft and xAI just agreed to let the U.S. government test early frontier AI models before the public can use them.

The testing will be run by CAISI， a Commerce Department group that checks what advanced models can do and where they may create security risk.

The unusual part is that the companies will share versions with reduced or removed guardrails， which lets testers see the model's raw ability instead of only its polished public behavior.

Becasue， a national security test asks whether the model can help with cyber intrusion， malware planning， or other high-risk tasks when its filters are weakened.