A significant legal battle is unfolding between AI developer Anthropic and the U.S. Department of Defense, with tech giants Microsoft, Google, and Amazon demonstrating various forms of support for Anthropic. The dispute centers on the Pentagon’s unprecedented designation of Anthropic as a “supply chain risk,” a label typically reserved for foreign entities suspected of posing national security threats.
Anthropic filed two lawsuits against the Trump administration and the DoD, alleging that the designation is unlawful and violates the company’s First Amendment rights. The company contends that this action is retaliation for its refusal to grant the Pentagon unrestricted access to its Claude AI model for applications such as autonomous lethal warfare and mass domestic surveillance. According to Anthropic, its models have not been trained or validated for fully autonomous weapons use, and AI-driven surveillance could amplify errors or misuse at an unanticipated scale.
The Pentagon’s move came after months of disagreement over the terms of use for Anthropic’s AI, with President Donald Trump reportedly directing federal agencies to “IMMEDIATELY CEASE all use of Anthropic’s technology.” The supply chain risk designation effectively bans government agencies and military contractors from utilizing Anthropic’s technology.
Industry Support Emerges
Microsoft has emerged as a key corporate backer, filing an amicus brief in support of Anthropic. In its filing, Microsoft warned that the Pentagon’s blacklisting could have “negative ramifications for the entire technology sector and American business community.” The company, which has pledged up to $5 billion in investment in Anthropic, articulated its stance: “Microsoft’s position is that AI should be focused on lawful and appropriately guarded use cases. For example, AI should not be used to conduct domestic mass surveillance or put the country in a position where autonomous machines could independently start a war.”
Beyond direct legal support, Google and Amazon, both significant investors in Anthropic—with Google having invested over $3 billion and Amazon $8 billion—have assured customers that Anthropic’s AI models, including Claude, will remain available for non-defense work. Google continues to offer Claude through its Vertex AI platform, while Amazon provides access via AWS Bedrock and GovCloud.
Further demonstrating industry concern, dozens of employees from rival AI labs, including Google’s chief scientist Jeff Dean and staff from OpenAI, have filed a separate amicus brief in their personal capacities to support Anthropic. Additionally, a group of 22 former high-ranking U.S. military officials and organizations like the Cato Institute and the Electronic Frontier Foundation have also filed briefs opposing the Pentagon’s actions.
Pentagon’s Stance
The Department of Defense has declined to comment on the ongoing litigation. However, Emil Michael, Under Secretary of Defense for Research and Engineering, indicated that the lawsuit was an “expected reaction,” stating, “The talks are over. We’re moving on.”
This legal challenge highlights growing tensions over the ethical deployment of AI in national security contexts and the extent of government authority over private technology companies.