Spacer basic

easy tier · create

The request

Make a cylindrical spacer: 20mm outer diameter, 8mm bore, 12mm tall.

What the AI judge checks

Measured checks

OD is at least ~20 (not undersized)
height ~12

Ranked by hand

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

#1 tie
Gemini 3.8 Flash
#1 tie
GPT-5.6 Sol
#1 tie
GPT-6 Astra
#1 tie
Opus 5
#1 tie
Fable 5.1

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

Every model's attempts

Fable 5.1
94 100
100
$0.22
28s
GPT-5.6 Sol
100 100
100
$0.08
17s
GPT-6 Astra
100 100
100
$0.43
30s
Gemini 3.8 Flash
100 100
100
$0.05
19s
Opus 5
100 100
100
$0.20
37s

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