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HarnessTax: How Much Does the Harness Matter for Coding Agents?

233 points · 99 comments · matt_d

  1. vintagedave · · focus · HN ↗
    > Models may perform better with other harnesses than with their own. So it turns out that your Claude models may not need Claude Code…

    This is interesting. We built our own harness (CodeBot, an agent for Delphi) and it currently uses OpenAI models; we tuned it for specific behaviours and patterns and I find its behaviour better than Codex. Same models underneath.

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