Google is restructuring its AI leadership and operations. Jeff Dean, after 27 years, is leaving Google with collaborator Sanjay Ghemawat to launch Discovery Loop, a public-benefit company automating machine learning, science, and engineering. Google will remain a founding investor and cloud partner. Demis Hassabis is handing Google DeepMind’s daily operations to Koray Kavukcuoglu, becoming chair of DeepMind and chief scientist of Alphabet to focus on AGI, scientific discovery, global strategy, and Isomorphic Labs. This separation suggests Google is distinguishing between product-focused AI and long-term civilization-scale goals. Meanwhile, Meta released Muse Code, a terminal-based coding agent powered by Muse Spark 1.2. Muse can plan changes, write code, validate results, and work across large repositories, fanning out work to multiple sub-agents in isolated worktrees and recording actions to recover after a crash. This architecture targets coordinating a swarm of agents over long-running tasks, entering a market shaped by Claude Code and Codex. The trend shows frontier labs moving from containing everything inside one giant castle to becoming a network of specialized startups, visionary researchers, and software workers, resembling a mixture-of-experts model.