OpenAI’s Brad Lightcap to depart after eight-year tenure

Brad Lightcap, OpenAI’s special projects lead and former chief operating officer, has announced he will leave the company in a few weeks, concluding an eight-year tenure. In an internal memo posted to X, Lightcap stated he is excited to advance the company’s mission from a different vantage point, noting he has been focused on the next horizon and potential barriers to mission success.

His departure follows a significant reshuffling of OpenAI’s executive team as the firm prepares for an initial public offering over the coming year. Lightcap’s role has undergone substantial changes over the past 18 months. In March 2025, his responsibilities as COO expanded to oversee business operations, global deployment, and infrastructure. By January 2026, he stepped back from leading the enterprise push, with Barret Zoph taking over before Zoph’s own departure five months later.

In April 2026, Lightcap officially stepped down as COO, transitioning to a special projects role reporting directly to CEO Sam Altman. Denise Dresser, the company’s chief revenue officer, assumed a significant portion of his former operational responsibilities. Lightcap indicated he would remain with the company for a few weeks to facilitate the transition.

The exit adds to a wave of recent executive changes at OpenAI. AGI chief Fidji Simo departed in July following a period of medical leave, while chief marketing officer Kate Rouch stepped down in April for health reasons. Company president Greg Brockman has since taken control of the product side, with the firm vowing to cut out “side quests” in favour of key revenue drivers.

Lightcap, who noted in his memo that he is starting “something new,” expressed appreciation for the rapid adoption of the company’s tools. He wrote that he hopes OpenAI will continue to earn the trust of its users as it enters this next period. The specific nature of his new venture has not been disclosed.