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

233 points · 99 comments · matt_d

  1. mikert89 · · focus · HN ↗
    As the model gets smarter, you need to tell it less
    1. NewJazz · · focus · HN ↗
      As the black box gets bigger, you need to stop expressing yourself even more.
    2. malnourish · · focus · HN ↗
      Perhaps, but then the value of each thing you tell it goes to.
    3. big-chungus4 · · focus · HN ↗
      It goes the opposite way too. Small models need minimal harness like pi or they get overwhelmed by long system message and tool descriptions
    4. edgyquant · · focus · HN ↗
      No not really, it’s able to fill it more gaps for sure but the way it fills them is totally random and almost always not what you want it to do
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