Jeff Dean departs Google after 27 years as AI leadership reshuffle unfolds
Google announced a major AI leadership reshuffle: longtime chief scientist Jeff Dean is leaving after 27 years to start his own company, Discovery Loop, with Google investing in it; Demis Hassabis will become chairman of DeepMind and chief scientist of Alphabet, while Koray Kavukcuoglu is promoted to head of the AI division and will oversee the Gemini 4 development. The move signals Google’s ongoing push in AI amid competition with OpenAI and Anthropic, as cloud growth remains a focus and capital expenditures rise; Alphabet shares fell about 4% on the news.