Hundreds of Google employees have urged CEO Sundar Pichai to refuse the use of the company’s artificial intelligence in Pentagon work involving U.S. classified information. According to reports, the workers—spanning teams including Google DeepMind and Google Cloud—have sent a letter to Pichai calling for limits on how Google’s AI systems could be used by the U.S. Department of Defence.

The letter comes as Google is described as negotiating with the Pentagon to deploy its Gemini AI model in classified settings. Employees cite concerns about the implications of using commercial AI systems for sensitive military tasks, including issues related to oversight and the risks of deploying such technology in environments governed by classification.

The two outlets report consistent elements: a coordinated internal request by Google staff, the target of the request being Pichai, and the specific context of ongoing discussions with the Pentagon about using Gemini for classified applications. Neither source indicates that Google or the Pentagon has agreed to any final terms in response to the letter.