Brad Lightcap, former COO of OpenAI, departed this week to start a new venture. Four key engineers from Google—Jeff Dean, Sanjay Ghemawat, Oriol Vinyals, and Quoc Le—have also left to co-found Discovery Loop, a company focused on automating scientific research. Additionally, Demis Hassabis has stepped down as head of Google DeepMind, with Koray Kavukcuoglu taking over. This talent drain reflects a Silicon Valley trend where top researchers are moving from large tech companies to private startups to develop AI-driven applications, even as demand for enterprise AI accelerates. Meanwhile, hyperscale cloud providers like Microsoft Azure, Amazon AWS, and Google Cloud have all reported strong growth in AI-related revenue, indicating a booming development in AI infrastructure.