Alphabet Overhauls DeepMind Leadership as Koray Kavukcuoglu Replaces Demis Hassabis as CEO

Alphabet Inc. has overhauled the top leadership of its artificial intelligence division, replacing Google DeepMind Chief Executive Demis Hassabis with Chief Technology Officer Koray Kavukcuoglu and losing veteran AI pioneer Jeff Dean, in a bid to counter intensifying competition from OpenAI and Anthropic.

Under the executive reshuffle announced by Alphabet Chief Executive Sundar Pichai, Kavukcuoglu takes over operational leadership of DeepMind and will report directly to Pichai. In his new role as CEO, Kavukcuoglu is tasked with overseeing frontier AI research, developer relations, the Gemini app teams, and the development of the upcoming Gemini 4 model.

Hassabis, who co-founded DeepMind, will step down from day-to-day management to serve as Chief Scientist for Alphabet while assuming a board-level chairman role similar to Greg Brockman’s position at OpenAI. Hassabis will also continue leading Isomorphic Labs, Alphabet’s drug-discovery unit spun out from DeepMind.

“I have worked towards AGI my entire life and now, like many of you, I feel it is within reach,” Hassabis wrote. “It is critical that we collectively get the next steps right to ensure it goes well for humanity and ushers in an incredible new era of discovery and wonder.”

The management shakeup coincides with a significant departure from Google’s engineering ranks. Jeff Dean, a key architect of Google’s early search infrastructure and neural networks over nearly three decades, is leaving the company alongside senior Gemini lead Oriol Vinyals. The pair plan to launch an independent startup focused on accelerating scientific breakthroughs using artificial intelligence.

The leadership restructuring comes as Alphabet faces headwinds in commercializing its flagship models. Delays surrounding Gemini 3.5 Pro have allowed competitors to expand market share, with OpenAI’s GPT-5.6 Sol and Anthropic’s Claude Opus 5 drawing active users away from Google’s ecosystem. Simultaneously, open-source Chinese models such as Kimi K3 and Qwen 3.8 Max are gaining traction among developers by matching high-end capabilities at lower operational costs.

Pichai emphasized ongoing progress across Alphabet’s existing AI portfolio, noting high customer demand for Gemini Flash and over 900 million downloads for open-weights Gemma models. The company recently rolled out three specialized Gemini models, including a cybersecurity-focused iteration, as part of its broader push to defend its market standing.