Making sense of Anthropic’s fight with the Pentagon—and OpenAI’s opportunity

Fortune

by Allie Garfinkle

March 3, 2026

AI-Generated Deep Dive Summary

Anthropic, valued at $380 billion, is facing its biggest crisis yet after refusing to allow its technology to be used for mass surveillance or lethal autonomous weapons. The Pentagon terminated a $200 million contract with the company and labeled it a “supply chain risk,” marking the first time the U.S. government has taken such action against an American business in apparent retaliation for not agreeing to certain contractual terms. Anthropic has vowed to challenge this decision legally, but the move could deal a significant blow to its business as its access to the trillion-dollar defense industrial complex appears to have been shut down. The situation highlights the ongoing tension between ethical AI development and government priorities. Anthropic’s stance against technologies with potentially harmful applications aligns with its stated commitment to responsible AI use, but it has put the company at odds with the Pentagon. Meanwhile, OpenAI appears to be filling the void left by Anthropic’s exit. The company struck a deal with the Department of Defense that allows it to build its own “safety stack”—a system of technical, policy, and human controls designed to ensure AI compliance with ethical guidelines. Sam Altman, OpenAI’s CEO, revealed in an internal message that if the AI refuses to perform a task, the government would not force it to comply. This unfolding drama underscores the broader implications for businesses operating at the intersection of AI and national security. The conflict between Anthropic and the Pentagon raises critical questions about the role of government in regulating technology and the extent to which companies can assert their ethical principles without risking commercial viability. OpenAI’s ability to quickly capitalize on the situation demonstrates its growing influence in the AI space, even as it navigates the complexities of working with a federal entity. For businesses, this situation serves as a cautionary tale about aligning values with market demands and understanding the potential consequences of taking a stand against powerful institutions. As the AI industry continues to evolve, companies will need to carefully weigh ethical considerations against business interests—a balance that can be delicate and often contentious.

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Originally published on Fortune on 3/3/2026