Mustafa Suleyman, a co-founder of artificial intelligence research company DeepMind, has left Google to join venture capital firm Greylock Partners. Suleyman has brought to an end an eight-year run at Google, where he was most recently the company's vice president of AI product management and policy. He joined Google when it bought DeepMind in 2014 and became the latter's head of applied AI. Suleyman was reportedly placed on administrative leave in 2019 following allegations that he bullied employees. Suleyman, who moved to Google at the end of that year, said on a podcast with Greylock partner Reid Hoffman this week that he "really screwed up" and that "I remain very sorry about the impact that that caused people and the hurt that people felt there."