Lilian Weng returns to OpenAI weeks after stress-related resignation

Lilian Weng has rejoined OpenAI after briefly stepping down due to stress and illness. She had left to join Thinking Machines Lab before deciding to return. In her new role at OpenAI, she will work alongside CEO Sam Altman in a more structured and predictable capacity. Her return highlights a broader trend of AI industry leaders stepping back from high-pressure roles due to health concerns. The move also reflects the continued circulation of top talent among leading AI organizations.