← mecheval / run / a2-stepped-block-01 / openai-direct-gpt-5 / 20260428T215312Z-6765

run 20260428T215312Z-6765

a2-stepped-block-01 · openai-direct-gpt-5

Summary

statusPASS
score1.00 (4/4)
submissionself-run
modelopenai-direct-gpt-5 (openai)
started2026-04-28T21:53:12.819Z
ended2026-04-28T21:53:31.460Z
tokens658 in · 1,613 out · 2,271 total
wallclock18.6s
tool calls1
task hashf89fc615a163d859…
vcad hashb1f36e4ada95dc7d…

Prompt

Start with a rectangular block 50mm long (X) × 30mm wide (Y) × 20mm tall (Z), centered in X and Y with the bottom face on the XY plane (so it spans x in [-25, 25], y in [-15, 15], z in [0, 20]). Cut away the upper +X corner: remove material in the region x in [0, 25], y in [-15, 15], z in [10, 20]. The result has an L-shape when viewed from +Y. Output a single solid.

Checks

0
valid_solid
pass
params + details
params: {
  "type": "valid_solid"
}

details: {
  "root_count": 1,
  "solids_produced": 1
}
1
bbox
pass
params + details
params: {
  "type": "bbox",
  "min": [
    -25,
    -15,
    0
  ],
  "max": [
    25,
    15,
    20
  ],
  "tolerance_mm": 0.05
}

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": 0.05
}
2
mass_props
pass
params + details
params: {
  "type": "mass_props",
  "volume_mm3": 22500,
  "tolerance_pct": 0.1
}

details: {
  "volume": {
    "actual_mm3": 22500,
    "deviation_pct": 0,
    "pass": true,
    "spec_mm3": 22500,
    "tolerance_pct": 0.1
  }
}
3
step_roundtrip
pass
params + details
params: {
  "type": "step_roundtrip",
  "tolerance_pct": 0.1
}

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": 0.061644140029689765
      },
      "index": 0,
      "pass": true,
      "volume": {
        "deviation_pct": 0,
        "original_mm3": 22500,
        "pass": true,
        "roundtripped_mm3": 22500
      }
    }
  ],
  "tolerance_pct": 0.1
}

Tool calls

0
openai.chat.completions.create
ok
18630ms
args
{
  "model": "gpt-5",
  "max_tokens": 8000,
  "system_chars": 1674,
  "user_chars": 431
}

What the model built

isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260428T215312Z-6765.vcad

.vcad source

{
  "version": "0.1",
  "nodes": {
    "1": { "id": 1, "name": "Base Block Cube", "op": { "type": "Cube", "size": { "x": 50, "y": 30, "z": 20 } } },
    "2": { "id": 2, "name": "Positioned Base Block", "op": { "type": "Translate", "child": 1, "offset": { "x": -25, "y": -15, "z": 0 } } },
    "3": { "id": 3, "name": "Cut Volume Cube", "op": { "type": "Cube", "size": { "x": 25, "y": 30, "z": 10 } } },
    "4": { "id": 4, "name": "Positioned Cut Volume", "op": { "type": "Translate", "child": 3, "offset": { "x": 0, "y": -15, "z": 10 } } },
    "5": { "id": 5, "name": "Stepped Block", "op": { "type": "Difference", "left": 2, "right": 4 } }
  },
  "materials": {},
  "part_materials": {},
  "roots": [
    { "root": 5, "material": "default" }
  ]
}

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