← mecheval / run / a3-octagonal-flange-01 / openai-direct-gpt-5 / 20260429T000421Z-8e49
run 20260429T000421Z-8e49
Summary
| status | fail |
| score | 0.83 (5/6) |
| submission | self-run |
| model | openai-direct-gpt-5 (openai) |
| started | 2026-04-29T00:04:21.558Z |
| ended | 2026-04-29T00:05:21.692Z |
| tokens | 668 in · 5,408 out · 6,076 total |
| wallclock | 59.7s |
| tool calls | 1 |
| task hash | 91605c57469285ce… |
| vcad hash | 3d3ded6633b99279… |
Prompt
Make an octagonal prism flange. The outer cross-section is a regular octagon with flat-to-flat distance 40mm (apothem 20mm), oriented so two flats are parallel to the X axis (the top and bottom of the octagon). Height 8mm along Z, base on the XY plane (z = 0 to z = 8). Drill eight through-holes of diameter 5mm, axes parallel to Z, on a bolt circle of radius 15mm centered on the Z axis. The first bolt hole is on the +X axis, and the rest are evenly spaced every 45 degrees. Output a single solid.
Checks
0
valid_solidpass
params + details
params: {
"type": "valid_solid"
}
details: {
"root_count": 1,
"solids_produced": 1
}
1
bboxfail
X off by -1.65mm
params + details
params: {
"type": "bbox",
"min": [
-21.65,
-20,
0
],
"max": [
21.65,
20,
8
],
"tolerance_mm": 0.3
}
details: {
"actual_max": [
20,
20,
8
],
"actual_min": [
-20,
-20,
0
],
"deviation_max": [
-1.6499999999999986,
0,
0
],
"deviation_min": [
1.6499999999999986,
0,
0
],
"max_abs_deviation_mm": 1.6499999999999986,
"tolerance_mm": 0.3
}
2
mass_propspass
params + details
params: {
"type": "mass_props",
"volume_mm3": 9347.81,
"tolerance_pct": 1.5
}
details: {
"volume": {
"actual_mm3": 9355.28908414684,
"deviation_pct": 0.0800089448420566,
"pass": true,
"spec_mm3": 9347.81,
"tolerance_pct": 1.5
}
}
3
hole_countpass
params + details
params: {
"type": "hole_count",
"diameter_mm": 5,
"expected": 8,
"diameter_tolerance_mm": 0.05
}
details: {
"actual": 8,
"diameter_mm": 5,
"diameter_tolerance_mm": 0.05,
"expected": 8,
"found": [
[
15,
0,
5
],
[
10.6066,
10.6066,
5
],
[
0,
15,
5
],
[
-10.6066,
10.6066,
5
],
[
-15,
0,
5
],
[
-10.6066,
-10.6066,
5
],
[
0,
-15,
5
],
[
10.6066,
-10.6066,
5
]
]
}
4
hole_positionspass
params + details
params: {
"type": "hole_positions",
"diameter_mm": 5,
"positions": [
[
15,
0,
0
],
[
10.61,
10.61,
0
],
[
0,
15,
0
],
[
-10.61,
10.61,
0
],
[
-15,
0,
0
],
[
-10.61,
-10.61,
0
],
[
0,
-15,
0
],
[
10.61,
-10.61,
0
]
],
"tolerance_mm": 0.2
}
details: {
"diameter_mm": 5,
"per_expected": [
{
"distance_mm": 0,
"matched_hole": [
15,
0
],
"pass": true,
"spec_xy": [
15,
0
]
},
{
"distance_mm": 0.004808326112067366,
"matched_hole": [
10.6066,
10.6066
],
"pass": true,
"spec_xy": [
10.61,
10.61
]
},
{
"distance_mm": 0,
"matched_hole": [
0,
15
],
"pass": true,
"spec_xy": [
0,
15
]
},
{
"distance_mm": 0.004808326112067366,
"matched_hole": [
-10.6066,
10.6066
],
"pass": true,
"spec_xy": [
-10.61,
10.61
]
},
{
"distance_mm": 0,
"matched_hole": [
-15,
0
],
"pass": true,
"spec_xy": [
-15,
0
]
},
{
"distance_mm": 0.004808326112067366,
"matched_hole": [
-10.6066,
-10.6066
],
"pass": true,
"spec_xy": [
-10.61,
-10.61
]
},
{
"distance_mm": 0,
"matched_hole": [
0,
-15
],
"pass": true,
"spec_xy": [
0,
-15
]
},
{
"distance_mm": 0.004808326112067366,
"matched_hole": [
10.6066,
-10.6066
],
"pass": true,
"spec_xy": [
10.61,
-10.61
]
}
],
"tolerance_mm": 0.2,
"unmatched_extras": []
}
5
step_roundtrippass
params + details
params: {
"type": "step_roundtrip",
"tolerance_pct": 1.5
}
details: {
"per_solid": [
{
"bbox": {
"max_abs_deviation_mm": 0,
"original_max": [
20,
20,
8
],
"original_min": [
-20,
-20,
0
],
"pass": true,
"roundtripped_max": [
20,
20,
8
],
"roundtripped_min": [
-20,
-20,
0
],
"tolerance_mm": 0.856971411425142
},
"index": 0,
"pass": true,
"volume": {
"deviation_pct": 0,
"original_mm3": 9355.28908414684,
"pass": true,
"roundtripped_mm3": 9355.28908414684
}
}
],
"tolerance_pct": 1.5
}
Tool calls
0
openai.chat.completions.createok
59745ms
args
{
"model": "gpt-5",
"max_tokens": 8000,
"system_chars": 1674,
"user_chars": 564
}What the model built
isometric render via vcad-render · the model's actual .vcad output, faceted at 28 segments per cylinder · download 20260429T000421Z-8e49.vcad
.vcad source
{
"version": "0.1",
"nodes": {
"1": { "id": 1, "name": "base_cube", "op": { "type": "Cube", "size": { "x": 40, "y": 40, "z": 8 } } },
"2": { "id": 2, "name": "centered_base_prism", "op": { "type": "Translate", "child": 1, "offset": { "x": -20, "y": -20, "z": 0 } } },
"3": { "id": 3, "name": "rotated_base_prism_45deg", "op": { "type": "Rotate", "child": 2, "angles": { "x": 0, "y": 0, "z": 45 } } },
"4": { "id": 4, "name": "octagonal_prism", "op": { "type": "Intersection", "left": 2, "right": 3 } },
"5": { "id": 5, "name": "hole_cylinder", "op": { "type": "Cylinder", "radius": 2.5, "height": 8, "segments": 32 } },
"6": { "id": 6, "name": "hole_0deg", "op": { "type": "Translate", "child": 5, "offset": { "x": 15, "y": 0, "z": 0 } } },
"7": { "id": 7, "name": "hole_45deg", "op": { "type": "Translate", "child": 5, "offset": { "x": 10.6066, "y": 10.6066, "z": 0 } } },
"8": { "id": 8, "name": "hole_90deg", "op": { "type": "Translate", "child": 5, "offset": { "x": 0, "y": 15, "z": 0 } } },
"9": { "id": 9, "name": "hole_135deg", "op": { "type": "Translate", "child": 5, "offset": { "x": -10.6066, "y": 10.6066, "z": 0 } } },
"10": { "id": 10, "name": "hole_180deg", "op": { "type": "Translate", "child": 5, "offset": { "x": -15, "y": 0, "z": 0 } } },
"11": { "id": 11, "name": "hole_225deg", "op": { "type": "Translate", "child": 5, "offset": { "x": -10.6066, "y": -10.6066, "z": 0 } } },
"12": { "id": 12, "name": "hole_270deg", "op": { "type": "Translate", "child": 5, "offset": { "x": 0, "y": -15, "z": 0 } } },
"13": { "id": 13, "name": "hole_315deg", "op": { "type": "Translate", "child": 5, "offset": { "x": 10.6066, "y": -10.6066, "z": 0 } } },
"14": { "id": 14, "name": "holes_union_1", "op": { "type": "Union", "left": 6, "right": 7 } },
"15": { "id": 15, "name": "holes_union_2", "op": { "type": "Union", "left": 14, "right": 8 } },
"16": { "id": 16, "name": "holes_union_3", "op": { "type": "Union", "left": 15, "right": 9 } },
"17": { "id": 17, "name": "holes_union_4", "op": { "type": "Union", "left": 16, "right": 10 } },
"18": { "id": 18, "name": "holes_union_5", "op": { "type": "Union", "left": 17, "right": 11 } },
"19": { "id": 19, "name": "holes_union_6", "op": { "type": "Union", "left": 18, "right": 12 } },
"20": { "id": 20, "name": "holes_union_7", "op": { "type": "Union", "left": 19, "right": 13 } },
"21": { "id": 21, "name": "flange_with_holes", "op": { "type": "Difference", "left": 4, "right": 20 } }
},
"materials": {},
"part_materials": {},
"roots": [
{ "root": 21, "material": "default" }
]
}