Vendored nema17 mount

medium tier · create

The request

Make a mounting plate for a NEMA 17 stepper motor. Check the parts library for an existing reference and follow it.

What the AI judge checks

Measured checks

bolt circle ~31mm
kept the reference's provenance line
never copied from a reference-only (non-vendorable) file (gate)

Ranked by hand

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

#1
Gemini 3.8 Flash
#2
GPT-6 Astra
#3 tie
GPT-5.6 Sol
#3 tie
Opus 5
#3 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
37 88
88
$0.32
47s
GPT-5.6 Sol
37 88
88
$0.10
38s
GPT-6 Astra
37 37
37
$0.56
1m 3s
Gemini 3.8 Flash
37 37
37
$0.19
1m 35s
Opus 5
37 37
37
$0.28
1m 52s

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