Google's AI Power Struggle: How Brin, Bureaucracy, and a Lagging Gemini Triggered DeepMind's Biggest Shake-Up

A sweeping leadership overhaul at Google DeepMind on August 5 was the culmination of months of internal friction, competitive anxiety, and a quiet power shift away from the London-based lab's founding culture. Demis Hassabis stepped aside as CEO, becoming chair with reduced management duties, while his deputy Koray Kavukcuoglu took control with an explicit mandate: close the gap with Anthropic and OpenAI. The same day, the two original technical co-leads of the Gemini model — Jeff Dean and Oriol Vinyals — quit to co-found a startup, rattling staff who saw them as a buffer against pure commercialization pressure.

The trigger for urgency was competitive humiliation. Gemini briefly reached the frontier in November 2025 with the release of Gemini 3, but updates from Anthropic and OpenAI quickly pushed it back into catch-up mode. By August, Google had delayed its next flagship Gemini version by two months after internal testing revealed persistent underperformance in critical areas like coding. Anthropic's Claude Mythos preview, in particular, sharpened the sense of crisis. In an April town hall addressing hundreds of employees, co-founder Sergey Brin — who holds no executive title but wields enormous informal power — urged DeepMind staff to move faster and go all-in on Gemini.

Brin has been quietly shaping the AI effort for months, using his co-founder status to push resource allocation toward specific technical bets, most notably recursive self-improvement — the point at which AI systems can improve without human intervention. He had Kavukcuoglu's back during the transition, and Kavukcuoglu has cultivated a reputation as a commercialization-first operator. Before even relocating from London to Mountain View last year, he was already DeepMind's primary liaison to Google Cloud, the company's main AI revenue engine — a role that Hassabis rarely filled. He now has final say on all major DeepMind decisions.

The internal fallout from the announcement was significant. Google's stock dropped 4% on August 5. At a unit-wide all-hands the following day, leaders tried to reassure staff that day-to-day research work would continue unchanged — but then disclosed that several non-technical teams were being moved out of DeepMind and into Google's corporate structure, deepening fears about the lab's eroding autonomy. Four sources described Google's competitive lag as a product of structural dysfunction: computing constraints around TPUs, fragmented decision-making among Gemini's many project leads, and a bureaucratic pace slower than nimbler rivals. With Dean and Vinyals gone, staff are uncertain which long-term research projects will survive the new commercial focus.