Zed vs GitHub Copilot: I Tested Both on a 100K-Line Monorepo (2026)
Zed cold-starts in 0.4 seconds. Meanwhile, VS Code with Copilot takes 6.8 seconds. However, at hour 5 I hit a wall that almost made me switch back — and the reason changes how you should think about zed vs github copilot. Zed wins for native performance — Rust architecture, sub-millisecond latency, 300MB RAM versus VS
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