October 16 correction: Jacob Tsimerman clarified on X on October 15 that he would not join OpenAI as an employee. He will work full-time as founding Scientific Director of the Mathematical AI Safety Institute, while collaborating with OpenAI. Read the update.
In July, The Washington Post reported that Tsimerman planned to join OpenAI’s safety division, following a July 23 press conference. That was an announced plan, rather than confirmed employment.
Tsimerman is a Fields Medal-winning mathematician and a professor at the University of Toronto.