I'm always surprised how large harnesses are By comparison, the recently open so... | Hacker News

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usef- 15 days ago | parent | context | favorite | on: fx :Tiny, open, native coding agent.

I'm always surprised how large harnesses are

By comparison, the recently open sourced grok harness was 840k lines, codex 950k, pi 250k https://simonwillison.net/2026/Jul/15/grok-build/

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