I was looking it last night and the repo is something like 600k lines of Zig. Maybe 500k after comments and blank lines.
In my own experiments to build a tiny zig agent it came out to under 800kb.
In my own experiments to build a tiny zig agent it came out to under 800kb.
By comparison, the recently open sourced grok harness was 840k lines, codex 950k, pi 250k https://simonwillison.net/2026/Jul/15/grok-build/