GitHub Expands Infra With 4 Mn Cores, Debuts Copilot Fusion for Multi-Model Routing
Following earlier infrastructure upgrades, GitHub is doubling capacity to handle a surge in AI-driven development activity. The platform experienced 7.38 billion commits in September—a 5x increase from the previous month. Alongside this expansion, GitHub announced Copilot Fusion in general availability, an intelligent routing engine that dispatches different frontier AI models based on task complexity. Fusion offers three effort tiers (Standard, High, Max) designed to balance cost, latency, and reasoning capability, with the top tier capping inference costs at 1.1 times baseline model cost.
Key points
- Infrastructure expanded by 4M CPU cores and 160 PB storage
- Copilot Fusion now generally available with multi-model routing
- September saw 7.38 billion commits—5x monthly increase
- Three pricing tiers optimize cost, latency, and performance tradeoffs
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