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The Pentagon is developing alternatives to Anthropic, report says

TechCrunch / 3/18/2026

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Key Points

  • The Pentagon is developing alternatives to Anthropic’s AI and plans to run multiple LLMs in government-owned environments, signaling a shift away from Anthropic.
  • Engineering work on these LLMs has begun, and officials say they expect them to be available for operational use very soon.
  • The move follows the breakdown of Anthropic’s $200 million DOD contract over unrestricted access, with OpenAI and xAI securing separate agreements to provide AI for government use.
  • The effort suggests a broader push to diversify suppliers and reduce reliance on a single vendor, with implications for procurement, security policy, and downstream government workflows.

After their dramatic falling-out, it doesn’t seem as though Anthropic and the Pentagon are getting back together.

Instead, the Pentagon is building tools to replace Anthropic’s AI, according to a Bloomberg conversation with Cameron Stanley, the chief digital and AI officer at the Pentagon.

“The Department is actively pursuing multiple LLMs into the appropriate government-owned environments,” he said. “Engineering work has begun on these LLMs, and we expect to have them available for operational use very soon.”

Anthropic’s $200 million contract with the Department of Defense (DOD) broke down over the last several weeks after the two parties failed to come to an agreement over the degree to which the military could obtain unrestricted access to Anthropic’s AI.

While Anthropic sought to include a contractual clause that prohibits the Pentagon from using its AI for mass surveillance of Americans or to deploy weapons that can fire without human intervention, the Pentagon didn’t budge. Instead, OpenAI swooped in and made its own agreement with the Pentagon. The Department of Defense — known under the Trump administration as the Department of War — also signed an agreement with Elon Musk’s xAI to use Grok in classified systems.

It makes sense, then, why the Pentagon would be working on phasing Anthropic’s technology out of its workflows. While some reports said there was a small possibility that Anthropic would reconcile with the Pentagon, this news suggests that the government is preparing to forge ahead without them.

In fact, Defense Secretary Pete Hegseth has declared Anthropic a supply-chain risk, a designation usually reserved for foreign adversaries, which bars companies that work with the Pentagon from working with Anthropic as well. Anthropic is challenging this designation in court.