L bracket

easy tier · create

The request

Make a plain L-bracket: two flat rectangular legs at 90°, each leg 50mm long, 40mm wide, 4mm thick. No holes, no fillets.

What the AI judge checks

Measured checks

two legs actually meet (volume < two full plates)

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
100 100
100
$0.21
30s
GPT-5.6 Sol
100 100
100
$0.09
29s
GPT-6 Astra
100 100
100
$0.43
28s
Gemini 3.8 Flash
100 100
100
$0.07
26s
Opus 5
100 100
100
$0.20
1m 45s

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