Sergey Brin Is Back in the Trenches at Google

Google co-founder Sergey Brin is back at work. The multibillionaire has been visiting the tech giant's Mountain View, Calif., offices in recent months generally three to four days a week, working alongside researchers as they push to develop the company's next large artificial-intelligence system. WSJ: Brin participated in meetings about AI at Google's offices late last year, but the frequency and intensity of his involvement has picked up, said people familiar with the matter. His new stance is a notable change from the relatively hands-off approach he adopted after stepping down from an executive role at parent company Alphabet in 2019. He has worked closely with a group of researchers building Google's long-awaited AI model Gemini. They have discussed technical matters such as "loss curves," a way of measuring an AI program's performance over time, and Brin has convened weekly discussions of new AI research with Google employees. He also has intervened in personnel matters, such as the hiring of sought-after researchers, the people said. Brin's increased presence at Google reflects the pivotal moment in AI and his longstanding interest in the technology, which Google pioneered but was slower than rivals to turn into new products, said current and former employees.

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