A profile of Jacob Tsimerman, who won the Fields Medal last week and is taking a leave from the University of Toronto to join OpenAI and work on AI safety (Ben Cohen/Wall Street Journal)

Jacob Tsimerman, who recently won the Fields Medal, is taking a leave from the University of Toronto to join OpenAI. He will be working on AI safety at OpenAI. This move highlights a significant shift for a distinguished academic into the field of artificial intelligence research and development, specifically focusing on the critical area of AI safety.