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Tube clamp

medium tier · create

The request

Make a one-piece tube clamp for a 20mm tube: a block with a 20.4mm horizontal bore through it, a 2mm slit from the top face down into the bore so it can pinch, and two 4mm vertical clamping-screw holes, one each side of the slit.

What the AI judge checks

  • A horizontal bore through the block sized for a 20 mm tube
  • A slit from the top face that reaches all the way into the bore
  • Two vertical screw holes, one on each side of the slit
  • The screw holes are placed so that tightening them would close the slit
  • A single block with no separate or floating parts

Measured checks

  • tube bore exists (some through-tunnel) (gate)
  • slit opened the top (bore not a closed tunnel alone)

Ranked by hand

One reviewer put one attempt from each model in order, best first, ties left tied.

  1. #1 tie
    Gemini 3.8 Flash
    Gemini 3.8 Flash's ranked attempt
  2. #1 tie
    Opus 5
    Opus 5's ranked attempt
  3. #3 tie
    GPT-5.6 Sol
    GPT-5.6 Sol's ranked attempt
  4. #3 tie
    GPT-6 Astra
    GPT-6 Astra's ranked attempt
  5. #5
    Fable 5.1
    Fable 5.1's ranked attempt

Ordering by hand decides Human rank and Human rate on the leaderboard; it never affects Overall or Strict.

Every model's attempts

Run baseline-2026-092026-09-10commit 41aec7daspend $339.70 + $48.02 AI judging, 7 unpricedOther runs: 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed