run 20260428T214604Z-d9c6

Summary

Prompt

Make a finned block. Base: a rectangular plate 50mm long (X) × 30mm wide (Y) × 5mm thick (Z), centered in X and Y, with the bottom face on the XY plane (z = 0 to z = 5). Three rectangular fins stand on top of the base, each 50mm long in X, 3mm thick in Y, and 15mm tall in Z (z = 5 to z = 20). The fins are centered on y = -10, y = 0, and y = 10 (each fin spans 1.5mm to either side of its centerline). Output a single solid.

Checks

params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}

params: {
  "type": "bbox",
  "min": [
    -25,
    -15,
    0
  ],
  "max": [
    25,
    15,
    20
  ],
  "tolerance_mm": 0.1
}

details: {
  "actual_max": [
    25,
    15,
    20
  ],
  "actual_min": [
    -25,
    -15,
    0
  ],
  "deviation_max": [
    0,
    0,
    0
  ],
  "deviation_min": [
    0,
    0,
    0
  ],
  "max_abs_deviation_mm": 0,
  "tolerance_mm": 0.1
}

params: {
  "type": "mass_props",
  "volume_mm3": 14250,
  "tolerance_pct": 0.5
}

details: {
  "volume": {
    "actual_mm3": 14250,
    "deviation_pct": 0,
    "pass": true,
    "spec_mm3": 14250,
    "tolerance_pct": 0.5
  }
}

params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.5
}

details: {
  "per_solid": [
    {
      "bbox": {
        "max_abs_deviation_mm": 0,
        "original_max": [
          25,
          15,
          20
        ],
        "original_min": [
          -25,
          -15,
          0
        ],
        "pass": true,
        "roundtripped_max": [
          25,
          15,
          20
        ],
        "roundtripped_min": [
          -25,
          -15,
          0
        ],
        "tolerance_mm": 0.3082207001484488
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 14250,
        "pass": true,
        "roundtripped_mm3": 14250
      }
    }
  ],
  "tolerance_pct": 0.5
}

Tool calls

{
  "model": "gpt-5",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 486
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260428T214604Z-d9c6.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "Base_Cube", "op": { "type": "Cube", "size": { "x": 50, "y": 30, "z": 5 } } },
    "2": { "id": 2, "name": "Base_Placement", "op": { "type": "Translate", "child": 1, "offset": { "x": -25, "y": -15, "z": 0 } } },

    "3": { "id": 3, "name": "Fin_Prim", "op": { "type": "Cube", "size": { "x": 50, "y": 3, "z": 15 } } },
    "4": { "id": 4, "name": "Fin_Ym10", "op": { "type": "Translate", "child": 3, "offset": { "x": -25, "y": -11.5, "z": 5 } } },
    "5": { "id": 5, "name": "Fin_Y0", "op": { "type": "Translate", "child": 3, "offset": { "x": -25, "y": -1.5, "z": 5 } } },
    "6": { "id": 6, "name": "Fin_Yp10", "op": { "type": "Translate", "child": 3, "offset": { "x": -25, "y": 8.5, "z": 5 } } },

    "7": { "id": 7, "name": "Union_Base_Fin1", "op": { "type": "Union", "left": 2, "right": 4 } },
    "8": { "id": 8, "name": "Union_Add_Fin2", "op": { "type": "Union", "left": 7, "right": 5 } },
    "9": { "id": 9, "name": "Union_Add_Fin3", "op": { "type": "Union", "left": 8, "right": 6 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 9, "material": "default" }
  ]
}

generated 2026-06-19T01:47:55.560Z · static site, regenerate with npm run build -w @mecheval/leaderboard