The AI arms race is breaking its own architects

Lilian Weng, cofounder of Thinking Machines Lab, recently became the latest industry figure to cite health concerns in her resignation. She joins a growing list including OpenAI’s Fidji Simo, xAI cofounder Greg Yang, and C3 AI CEO Tom Siebel, all of whom stepped back after finding the intensity of their roles unsustainable. While the specific health challenges vary, the trend suggests that the industry’s obsession with total optimization is creating an environment incompatible with human biology.

Jan Gerber, who runs a recovery clinic for executives in Zurich, notes that AI has not created the promised three-day work week. Instead, it has enabled a cycle where freed-up time is immediately consumed by more deals and increased oversight requirements. This 'eat or be eaten' culture encourages founders to ignore early warning signs until they reach a breaking point. Experts like psychiatrist Dr. Judith Joseph warn that the pressure to match the tireless, emotionless consistency of AI agents often sacrifices the very human creativity and well-being necessary for long-term health. For these leaders, the realization is often painful: the same traits that fuel their professional success—grit, intensity, and an all-or-nothing approach—are precisely what make the decision to pause so difficult.