Caitlin Kalinowski, who joined OpenAI in November 2024 to lead its robotics and consumer hardware initiatives, announced her resignation on March 7, 2026. In a post on X, she emphasized that her decision was “about principle, not people,” expressing deep respect for CEO Sam Altman and the team, but raising serious concerns about the company’s recent agreement with the Department of Defense. She warned that “surveillance of Americans without judicial oversight and lethal autonomy without human authorization are lines that deserved more deliberation than they got.”(fortune.com)

Kalinowski’s core objection centered on the speed and governance of the Pentagon deal. In a follow-up post, she clarified: “To be clear, my issue is that the announcement was rushed without the guardrails defined. It’s a governance concern first and foremost. These are too important for deals or announcements to be rushed.”(techcrunch.com)

OpenAI confirmed her departure and defended the agreement, stating that it “creates a workable path for responsible national security uses of AI while making clear our red lines: no domestic surveillance and no autonomous weapons.” The company added that it recognizes strong views on these issues and will continue engaging with employees, government, civil society, and communities globally.(techcrunch.com)

The resignation follows a broader context in which Anthropic, another AI firm, had previously declined a Pentagon deal over similar concerns and was subsequently designated a supply‑chain risk by the Department of Defense. OpenAI stepped in with its own agreement, prompting internal and external scrutiny. CEO Sam Altman later acknowledged that the rollout of the deal “looked opportunistic and sloppy,” and the company amended the agreement to explicitly prohibit domestic surveillance.(techcrunch.com)

Kalinowski’s departure marks one of the most high‑profile internal reactions to OpenAI’s defense partnership. Her exit underscores the ethical and governance tensions emerging as AI firms navigate national security collaborations, particularly when physical AI and robotics are involved. Her resignation signals that for many engineers, the ethical implications of their work remain non‑negotiable.