GitHub Expands Infra With 4 Mn Cores, Debuts Copilot Fusion for Multi-Model Routing

After provisioning more than 3 million CPU cores and 120 petabytes of high-speed storage in August following a series of reliability incidents, GitHub is now doubling down on expanding its infrastructure by adding more than 4 million CPU cores and 160 PB of storage. This comes as GitHub experienced a massive surge in AI-driven commit activity recently, with 7.38 billion commits on GitHub in September alone—a 5x increase over the previous month. "Agents are changing the volume and shape of softwa