My open-source SDLC harness beat Claude Code on cost on every task it localized well, up to 75 percent cheaper (and I show where it loses)

A cold Claude Code run spent 6.83 dollars and 207 turns hunting one bug in an 82,000 line repo. My pipeline localized and fixed the same bug for about 1.70 dollars. That gap is the whole idea, and this post is about how it gets there without falling apart on the usual objections.


This is a companion discussion topic for the original entry at https://www.reddit.com/r/LocalLLM/comments/1v74f2l/my_opensource_sdlc_harness_beat_claude_code_on/