White House to Provide Anthropic Mythos Access to US Agencies Despite Pentagon Rift

An official said the White House was working with frontier AI labs to ensure their models help secure critical software against vulnerabilities, adding that any new technology requires a period of technical evaluation for fidelity and security.

The US government is planning to make a version of Anthropic's frontier available to major federal agencies amid concerns that the tool could sharply increase cybersecurity risk, Bloomberg News reported on Thursday (April 17, 2026).

Gregory Barbaccia, federal chief information officer at the White House Office of Management and Budget, told Cabinet department officials in an email on Tuesday that the OMB was setting up protections to allow their agencies to begin using Mythos, according to .

Barbaccia's email does not definitively say that various agencies would get Mythos access, nor does it provide a ⁠timeline for when it might come or how they might use it, the Bloomberg report added.

Its advanced coding ability allows it to detect and potentially exploit weaknesses, making it a powerful tool for cybersecurity testing. Departments such as energy and finance believe access could help strengthen defenses and prepare for cyber threats to critical infrastructure.