What smart people in tech are saying about Google's AI leadership overhaul

Sebastian Mallaby, a British journalist and author who once wrote a biography of Hassabis and DeepMind, said in a on X that the change is "a formalization of something that had been happening informally."

"Demis has been playing the role of Google AI statesman for some time, and Koray Kavukcuoglu has been running Google DeepMind research for some time," Mallaby said.

"He cared enough about safety that he fought a three-year battle with Alphabet to get external oversight over DeepMind's AI deployment," Mallaby added of Hassabis. "This next chapter of his career is a return to that side of his work."

Vinod Khosla, a billionaire entrepreneur and a cofounder of Sun Microsystems, wrote in a post on X that Google has been "the real source of AI acceleration," from developing Waymo cars when most people were skeptics to investing heavily in AI.

"Lots of research in universities but this team, including Sundar, Larry & Sergey, deserve full credit for believing, investing and accelerating it," said Khosla on Wednesday. "Huge impact."

Butler, who heads global marketing at the $1.5 billion vibe-coding startup, called the leadership shake-up a big deal.

"Four AI legends just left Google to start a company that will eventually be worth more than OpenAI and Anthropic combined," he wrote on LinkedIn on Wednesday.

He added that their new venture, Discovery Loop, could radically change how tech breakthroughs happen.

"AI has mostly helped humans do research. Discovery Loop wants AI to be the researcher: form hypotheses, run experiments, learn from the results, and keep going," he wrote. "Alphabet fell over 5% after the news. Their work helped build Google. Discovery Loop will be their most consequential creation yet."

Pouladian, the founder of BEP Research, an AI infrastructure research firm, said that the change in structure means that Google "finally wants to play to win."

"My read: putting Amin Vahdat, the architect behind Google's TPU infrastructure, closer to the center is about streamlining the whole machine," Pouladian wrote on X on Wednesday.

"Less internal politics. Better compute allocation. One AI strategy," Pouladian added.

Zvi Mowshowitz, founder of Balsa Research, an AI policy research agency, said on X on Wednesday that Google's shift doesn't bode well for AI safety.

"Big moves at Google DeepMind," Mowshowitz said. "Early read is this is Demis being 'kicked upstairs' and allowed to work on his special projects. Also Jeff Dean is stepping away."

"Presumably this puts the final nail in the coffin of 'DeepMind has meaningful safety practices, assurances or independence from the rest of Google,'" Mowshowitz added.

Tae Kim, a veteran tech journalist and author of the bestselling AI and semiconductor newsletter First Adopter, said it may be "Game over" for DeepMind.

"Jeff Dean and Demis Hassabis are the two most important AI executives at Google," said Kim in a post on X on Wednesday. "Jeff is leaving and Demis is stepping down from day-to-day operational leadership at DeepMind."

Liu, an AI analyst based in Beijing, wrote on X that the move is Google's way of consolidating its AI operations.

"Google is streamlining its elite troops here, cutting down on redundancies," Liu wrote on Wednesday. "Koray was already the main force leading the team in getting things done, and now they're reducing reporting layers while concentrating all resources on him."

On Thursday, Liu also reacted to Semafor reporting that Hassabis has begun shifting away from his CEO duties over the last year.

Liu wrote that this was "actually a good thing."

"He actually understands AI4Science better and not so much large models. Meanwhile, Jeff Dean is more of an underlying tech expert (Infra), and he doesn't actually manage that many people," he said. "The two of them were originally more suited to roles focused on external communications."

In a post on X, the tech newsletter writer said that Dean and Ghemawat's new venture is probably the biggest startup announcement of the year and perhaps the decade because of who the founders are.

"If I had to name the top 10 engineers currently or previously at Google in terms of impact it would be the two cofounders (Larry and Sergey) and all 4 of these folks," he wrote.