The Pentagon has signed classified AI access deals with OpenAI, Google, Microsoft, Amazon, Nvidia, xAI, and a startup called Reflection — while cutting out Anthropic, a company it had previously used for classified work.

The Defense Department flagged Anthropic as a supply-chain risk, which is the stated reason for its removal. The exact nature of that concern has not been made public, but the designation effectively bars Anthropic from this particular group of cleared vendors, at least for now.

What these deals actually cover

The agreements let the Pentagon use AI tools from each company in classified environments — meaning on networks and systems that handle sensitive or secret government data. That is a meaningfully higher bar than standard government contracts, which often cover unclassified work only. Getting cleared for classified use signals a deeper level of vetting and trust from the Defense Department.

OpenAI and xAI had already reached earlier agreements with the Pentagon covering the "lawful" use of their AI systems. The new announcements extend that framework to a broader group of vendors. Google's deal was reported by The Information, and The Wall Street Journal noted Microsoft's involvement.

Why vendor selection here matters

For AI companies, a classified Pentagon contract is both a revenue opportunity and a competitive signal. It suggests the government has assessed their security posture, supply chain, and reliability at the highest sensitivity levels. Being included — or excluded — in this group carries weight beyond the immediate contract value.

Anthropic's exclusion is notable because it was already an active vendor for classified use. A supply-chain risk designation mid-relationship is unusual and could affect how other government agencies view Anthropic for sensitive procurement. Anthropic has not publicly responded to the designation.

The broader push to bring commercial AI into classified Defense settings reflects a wider U.S. government effort to modernize military and intelligence tools using large language models and AI infrastructure. The pace of these deals — multiple major vendors cleared at once — suggests the Pentagon is moving quickly to build out its approved vendor base rather than relying on a single provider.

Watch for whether Anthropic challenges or addresses the supply-chain risk finding, and whether any of the newly included vendors disclose contract sizes or scope in upcoming earnings calls.