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Notes from building Athas

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Engineering678 → 0.47 msGit blame after a typing pauseAthas

Engineering · Oct 12, 2026 · 4 min read

Athas 0.16, measured: where the time went and how we got it backTyping in a 200,000-line file is 28× cheaper and a repeat git blame takes 0.47 ms instead of 678 ms. Here is every number and how we measured it.Mehmet Özgül