Alphabet is restructuring its AI leadership team.

CEO Sundar Pichai announced on Wednesday that DeepMind CEO Demis Hassabis will transition from his current position to serve as Alphabet's chief scientist with a focus on long-term AI research. Longtime Google executive Jeff Dean is also departing to start a new company alongside engineering leader Sanjay Ghemawat.

Dean posted on X on Wednesday to introduce Discover Loop, describing it as a public benefit corporation aimed at automating machine learning, science, and engineering to speed up discoveries and advancement.

The leadership shifts occur while Google contends with rising competition from OpenAI and Anthropic in areas like AI coding tools. Alphabet shares dropped as much as 5 percent after the news.

Here are reactions from prominent voices across business and technology regarding the AI executive changes at Google.

Sebastian Mallaby, author of 'The Infinity Machine: Demis Hassabis, DeepMind, and the Quest for Superintelligence'

Sebastian Mallaby, a British journalist and author of a biography on Hassabis and DeepMind, noted on X that the adjustment represents a formalization of an informal shift already underway.

Mallaby explained that Hassabis has served as a Google AI statesman for some time while Koray Kavukcuoglu has handled day-to-day research leadership at Google DeepMind.

He added that Hassabis had prioritized safety by pushing for three years to secure external oversight on DeepMind AI deployments, and this new role returns him to that emphasis.

Vinod Khosla, entrepreneur and venture capitalist

Vinod Khosla, billionaire entrepreneur and Sun Microsystems cofounder, posted on X that Google has driven real AI progress through early bets like Waymo and sustained heavy investment in the field.

Khosla credited the team including Sundar, Larry, and Sergey for believing in the technology, committing resources, and accelerating its development, calling the overall impact substantial.

Ben Pouladian, founder of BEP Research

Ben Pouladian, who leads the AI infrastructure research firm BEP Research, observed that the restructuring signals Google is now committed to competing aggressively.

He interpreted the elevated role for Amin Vahdat, key architect of Google's TPU systems, as a move to simplify operations, reduce internal conflicts, improve compute distribution, and unify AI strategy.

Zvi Mowshowitz, writer and founder of Balsa Research

Zvi Mowshowitz, founder of the AI policy research firm Balsa Research, suggested on X that the changes could weaken AI safety priorities at the company.

Mowshowitz described the moves as effectively sidelining Demis for special projects while Jeff Dean exits, which he said likely ends any meaningful independence or safety practices at DeepMind.

Tae Kim, veteran tech journalist and author of First Adopter

Tae Kim, tech journalist and author of the AI newsletter First Adopter, indicated the departures may signal the end for DeepMind as a distinct unit.

Kim highlighted that Jeff Dean and Demis Hassabis ranked as the two most critical AI executives at Google, with one leaving entirely and the other stepping back from operational duties.

Jiang Liu, Chinese tech analyst and cofounder of Turing Company

Jiang Liu, Beijing-based AI analyst and Turing Company cofounder, viewed the changes as Google consolidating its top AI talent and eliminating overlaps.

Liu noted that Koray had already driven execution and that the new structure cuts reporting layers to focus resources on him. He also called the gradual shift of Hassabis away from CEO tasks a positive development, arguing his strengths lie more in AI for science than large models while Jeff Dean excels in infrastructure rather than broad management.

Gergely Orosz, writer of the Pragmatic Engineer newsletter

Gergely Orosz, author of the Pragmatic Engineer newsletter, stated on X that the new venture from Dean and Ghemawat stands as potentially the most significant startup launch of the year or even the decade given the founders' track records.

Orosz ranked the two alongside Larry and Sergey among the highest-impact engineers ever associated with Google.