Alphabet CEO Sundar Pichai announced a significant restructuring of Google's artificial intelligence leadership on Wednesday, August 5, 2026. Demis Hassabis, who co-founded Google DeepMind, is stepping down from his day-to-day CEO responsibilities to become the Chair of Google DeepMind and the Chief Scientist of Alphabet. In his new capacity, Hassabis will focus on advancing artificial general intelligence (AGI) and accelerating scientific discovery across Alphabet. He will also continue to lead Isomorphic Labs, Alphabet's drug discovery subsidiary.
Koray Kavukcuoglu, previously the Chief Technology Officer of Google DeepMind and Google's Chief AI Architect, will take over as Senior Vice President of Google DeepMind. In this role, Kavukcuoglu will report directly to Pichai and will oversee Gemini model development, frontier AI research, and the Gemini app and developer teams. Kavukcuoglu has been with DeepMind for 13 years, during which he helped start the deep learning team and contributed to breakthroughs such as WaveNet and DQN. He also oversaw the merger of the Google DeepMind and Brain teams in 2023.
The leadership changes come as Google navigates intense competition in the AI sector from companies like OpenAI and Anthropic. Alphabet shares experienced a decline of approximately 4% to 5.4% following the announcement, reflecting investor concerns about the company's competitive standing and a broader trend of talent departures. This reshuffle also coincides with the unreleased status of Google's Gemini 4 model, which reportedly missed its June launch target.
In a separate development, Jeff Dean, a veteran Google engineer and Chief Scientist, is departing the company after 27 years. Dean will co-found an independent public benefit corporation named Discovery Loop with Google Senior Fellow Sanjay Ghemawat. This new venture will focus on machine learning, science, and engineering discoveries, with Alphabet serving as a founding investor and cloud partner. Dean's departure, alongside Ghemawat's, marks another significant exit of senior technical talent from Google.
Hassabis, a Nobel Prize recipient in Chemistry in 2024 for his work on protein structure prediction, has been a central figure in Google's AI efforts since co-founding DeepMind in 2010. The shift in his role reflects a strategic focus on the long-term development of AGI and scientific applications of AI, a goal Hassabis has long pursued. His transition also allows him to dedicate more time to Isomorphic Labs, which aims to accelerate drug discovery through AI.
Pichai highlighted the significant user engagement with Google's AI products, noting that the Gemini app has surpassed 950 million monthly users and Gemma models have exceeded 900 million downloads. The restructuring aims to maintain this momentum and accelerate the integration of AI models across Google's product portfolio. Kavukcuoglu's leadership is expected to drive the next phase of development for Gemini and other frontier AI research initiatives.