Google co-founder Sergey Brin has been urging Google DeepMind staff to go all in on Gemini and catch up to the AI frontier, following a sweeping leadership overhaul that saw Demis Hassabis step aside as CEO. Koray Kavukcuoglu now runs day-to-day operations from Mountain View, with final say on major decisions. The reshuffle follows Gemini release delays, coding benchmark gaps against Anthropic and OpenAI, and high-profile exits including Jeff Dean.