Posted Jul 11, 2026 at 4:48 PM UTCTTerrence O'BrienOpenAI’s head of safety is out.Turnovers at that ChatGPT maker continue. The company’s chief futurist, Joshua Achiam, and AGI head, Fidji Simo, announced their departures earlier this week. Now Johannes Heidecke, who has overseen OpenAI’s safety efforts, is out, as ChatGPT 5.6 rolls out and raises some alarms.Follow topics and authors from this story to see more like this in your personalized homepage feed and to receive email updates.Terrence O'Brien