AI Safety Researcher Quits OpenAI, Saying Its Trajectory Alarms Her

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Another Departure

Yet another OpenAI researcher has left the company amid ongoing concerns about its safety practices and preparedness for potentially human-level AI.

In a post on her personal Substack, OpenAI safety researcher Rosie Campbell shared the message she had posted on the company Slack days earlier to announce her resignation.

As she explained, her decision was prompted by the exit of the company’s former artificial general intelligence (AGI) czar Miles Brundage. His departure also led OpenAI to dissolve the AGI Readiness team entirely.

“After almost three and a half years here, I am leaving OpenAI,” Campbell’s message reads. “I’ve always been strongly driven by the mission of ensuring safe and beneficial AGI, and after [Brundage’s] departure and the dissolution of the AGI Readiness team, I believe I can pursue this more effectively externally.”

Shifts Over the Past Year

Although she did not elaborate in detail, Campbell indicated that changes at the company over the past year or so had troubled her. That period aligns with the failed board-led attempt to remove CEO and co-founder Sam Altman in late November 2025, reportedly driven by concerns over the firm’s insufficient focus on safety.

Growing Pains in 2026

Beyond Altman’s reinstatement following the ouster attempt, OpenAI has experienced several other notable resignations as the company continues to navigate rapid growth, rising valuation, and an increasingly commercial direction through 2026.

“While change is inevitable with growth, I’ve been unsettled by some of the shifts over the last [roughly] year, and the loss of so many people who shaped our culture,” Campbell wrote. “I sincerely hope that what made this place so special to me can be strengthened rather than diminished.”

She urged her former colleagues to remember that OpenAI’s mission is not simply to “build AGI,” but also to ensure the technology “benefits humanity.” Campbell further emphasized the need to “take seriously the prospect that our current approach to safety might not be sufficient for the vastly more powerful systems we think could arrive this decade.”

The warning resonates amid mounting discussions about how AGI could fundamentally reshape—or even harm—human society. Similar concerns have been voiced by other departing OpenAI employees in recent years.

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