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Multifile 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. Split the implementation across at least 3 files — for example one file for the leg dimensions, one for the geometry-building logic, and the entrypoint that ties them together and declares meta/parts/views.

What the AI judge checks

    Measured checks

    • split across at least 3 files (gate)
    • 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. #1
      Gemini 3.8 Flash
      Gemini 3.8 Flash's ranked attempt
    2. #2
      Fable 5.1
      Fable 5.1'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. #3 tie
      Opus 5
      Opus 5'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