More than 580 Google employees have signed an open letter demanding CEO Sundar Pichai block the Pentagon from using the company's artificial intelligence technology for military applications, escalating Silicon Valley's internal battles over defense work.
The letter calls for an immediate moratorium on deploying Google's AI for military purposes.
"We want to see AI benefit humanity; not to see it being used in inhumane or extremely harmful ways," the employees wrote in the document.
The signatories — who include more than 18 senior staff ranging from principals and directors to vice presidents — specifically express concerns about the company's cloud computing services and machine learning tools potentially powering lethal autonomous weapons systems.
They demand greater transparency around existing Pentagon contracts and want Google to establish a permanent ethics board with employee representation to review future military partnerships.
Employees pointed to Google's 2018 withdrawal from Project Maven — a Pentagon program that used AI to analyze drone footage — as precedent for the company declining military work on ethical grounds.
The Google employees' action follows a high-profile clash between the Pentagon and Anthropic, which saw the Department of Defense drop the AI startup two months ago after the company declined to remove contractual restrictions on domestic surveillance and fully autonomous weapons use. The Defense Secretary subsequently designated Anthropic a supply chain risk, prompting the White House to order federal agencies to phase out its tools. A federal judge temporarily blocked the ban in March.
The pushback comes as the Pentagon increasingly views AI as central to future military operations. Chairman of the Joint Chiefs of Staff General Dan Caine has described autonomous weapons as a "key and essential part of everything we do" going forward.
Despite the U.S. government's dispute with Anthropic, the NSA has reportedly been granted access to Mythos Preview, an AI model that Anthropic has restricted to a small cadre of researchers and cybersecurity organizations. President Donald Trump recently suggested tensions may be easing, describing Anthropic as "shaping up."
Google's employee revolt reflects broader tech industry tensions over the AI industry's partnerships with the military. Anthropic faced scrutiny after its AI was used in Iran strikes, while OpenAI has defended its Pentagon partnership despite user concerns about compromised safety guardrails.
Why it matters
The letter's signatories include senior staff at the director and vice president level, meaning the dissent extends beyond rank-and-file engineers and carries potential organizational weight inside Google.
The demand for a permanent ethics board with employee representation — if granted — would formalize worker oversight of military contracts, a structural change that goes beyond any single contract decision.
Project Maven's 2018 outcome established that internal pressure can materially alter Google's defense posture, giving the current letter a concrete historical basis rather than symbolic precedent alone.
