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

233 points · 99 comments · matt_d

  1. x312 · · focus · HN ↗
    Claude Code/Codex charge the user for their extremely bloated one-size-fits-all system prompts (including safety instructions and other stuff users dont want).

    In my experience if you're using OpenAI/Claude models and paying API costs, almost every other harness beats Claude Code/Codex in cost.

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