← mecheval / run / a3-octagonal-flange-01 / openai-direct-gpt-5-mini / 20260429T000616Z-ba90
run 20260429T000616Z-ba90
Summary
| status | fail |
| score | 0.00 (0/6) |
| submission | self-run |
| model | openai-direct-gpt-5-mini (openai) |
| started | 2026-04-29T00:06:16.192Z |
| ended | 2026-04-29T00:08:04.243Z |
| tokens | 668 in · 5,329 out · 5,997 total |
| wallclock | 108.0s |
| tool calls | 1 |
| task hash | 91605c57469285ce… |
| vcad hash | 8e57a2e8b348fa0f… |
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_solidfail
solid invalid
params + details
params: {
"type": "valid_solid"
}
details: {
"error": "parse: Invalid JSON vcad file: invalid value: expected key to be a number in quotes at line 4 column 5",
"reason": "fatal evaluation error"
}
1
bboxfail
? off by 0.00mm
params + details
params: {
"type": "bbox",
"min": [
-21.65,
-20,
0
],
"max": [
21.65,
20,
8
],
"tolerance_mm": 0.3
}
details: {
"reason": "no valid solid to measure"
}
2
mass_propsfail
mass props off
params + details
params: {
"type": "mass_props",
"volume_mm3": 9347.81,
"tolerance_pct": 1.5
}
details: {
"reason": "no valid solid to measure"
}
3
hole_countfail
found 0/8 holes of ⌀5mm
params + details
params: {
"type": "hole_count",
"diameter_mm": 5,
"expected": 8,
"diameter_tolerance_mm": 0.05
}
details: {
"actual": 0,
"diameter_mm": 5,
"diameter_tolerance_mm": 0.05,
"expected": 8,
"found": []
}
4
hole_positionsfail
8/8 mispositioned
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": [
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
15,
0
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
10.61,
10.61
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
0,
15
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
-10.61,
10.61
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
-15,
0
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
-10.61,
-10.61
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
0,
-15
]
},
{
"pass": false,
"reason": "no candidate cylindrical feature of this diameter remained unmatched",
"spec_xy": [
10.61,
-10.61
]
}
],
"tolerance_mm": 0.2,
"unmatched_extras": []
}
5
step_roundtripfail
STEP roundtrip failed
params + details
params: {
"type": "step_roundtrip",
"tolerance_pct": 1.5
}
details: {
"reason": "no valid solid to round-trip"
}
Tool calls
0
openai.chat.completions.createok
108040ms
args
{
"model": "gpt-5-mini",
"max_tokens": 8000,
"system_chars": 1674,
"user_chars": 564
}What the model built
no render available — vcad-render did not produce geometry for this attempt
.vcad source
{
"version": "0.1",
"nodes": {
"cube_axis": {
"id": "cube_axis",
"name": "axis_aligned_square_prism",
"op": {
"type": "Cube",
"size": {
"x": 40,
"y": 40,
"z": 8
}
}
},
"trans_axis": {
"id": "trans_axis",
"name": "translate_axis_square_to_center",
"op": {
"type": "Translate",
"child": "cube_axis",
"offset": {
"x": -20,
"y": -20,
"z": 0
}
}
},
"cube_rot": {
"id": "cube_rot",
"name": "rotated_square_prism",
"op": {
"type": "Cube",
"size": {
"x": 40,
"y": 40,
"z": 8
}
}
},
"trans_rot": {
"id": "trans_rot",
"name": "translate_rot_square_to_center",
"op": {
"type": "Translate",
"child": "cube_rot",
"offset": {
"x": -20,
"y": -20,
"z": 0
}
}
},
"rot45": {
"id": "rot45",
"name": "rotate_45_deg",
"op": {
"type": "Rotate",
"child": "trans_rot",
"angles": {
"x": 0,
"y": 0,
"z": 45
}
}
},
"octagon": {
"id": "octagon",
"name": "octagonal_prism_intersection",
"op": {
"type": "Intersection",
"left": "trans_axis",
"right": "rot45"
}
},
"cyl_0": {
"id": "cyl_0",
"name": "hole_0",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_0": {
"id": "tcyl_0",
"name": "translate_hole_0",
"op": {
"type": "Translate",
"child": "cyl_0",
"offset": {
"x": 15,
"y": 0,
"z": 0
}
}
},
"cyl_1": {
"id": "cyl_1",
"name": "hole_1",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_1": {
"id": "tcyl_1",
"name": "translate_hole_1",
"op": {
"type": "Translate",
"child": "cyl_1",
"offset": {
"x": 10.606602,
"y": 10.606602,
"z": 0
}
}
},
"cyl_2": {
"id": "cyl_2",
"name": "hole_2",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_2": {
"id": "tcyl_2",
"name": "translate_hole_2",
"op": {
"type": "Translate",
"child": "cyl_2",
"offset": {
"x": 0,
"y": 15,
"z": 0
}
}
},
"cyl_3": {
"id": "cyl_3",
"name": "hole_3",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_3": {
"id": "tcyl_3",
"name": "translate_hole_3",
"op": {
"type": "Translate",
"child": "cyl_3",
"offset": {
"x": -10.606602,
"y": 10.606602,
"z": 0
}
}
},
"cyl_4": {
"id": "cyl_4",
"name": "hole_4",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_4": {
"id": "tcyl_4",
"name": "translate_hole_4",
"op": {
"type": "Translate",
"child": "cyl_4",
"offset": {
"x": -15,
"y": 0,
"z": 0
}
}
},
"cyl_5": {
"id": "cyl_5",
"name": "hole_5",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_5": {
"id": "tcyl_5",
"name": "translate_hole_5",
"op": {
"type": "Translate",
"child": "cyl_5",
"offset": {
"x": -10.606602,
"y": -10.606602,
"z": 0
}
}
},
"cyl_6": {
"id": "cyl_6",
"name": "hole_6",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_6": {
"id": "tcyl_6",
"name": "translate_hole_6",
"op": {
"type": "Translate",
"child": "cyl_6",
"offset": {
"x": 0,
"y": -15,
"z": 0
}
}
},
"cyl_7": {
"id": "cyl_7",
"name": "hole_7",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"tcyl_7": {
"id": "tcyl_7",
"name": "translate_hole_7",
"op": {
"type": "Translate",
"child": "cyl_7",
"offset": {
"x": 10.606602,
"y": -10.606602,
"z": 0
}
}
},
"u01": {
"id": "u01",
"name": "union_0_1",
"op": {
"type": "Union",
"left": "tcyl_0",
"right": "tcyl_1"
}
},
"u23": {
"id": "u23",
"name": "union_2_3",
"op": {
"type": "Union",
"left": "tcyl_2",
"right": "tcyl_3"
}
},
"u45": {
"id": "u45",
"name": "union_4_5",
"op": {
"type": "Union",
"left": "tcyl_4",
"right": "tcyl_5"
}
},
"u67": {
"id": "u67",
"name": "union_6_7",
"op": {
"type": "Union",
"left": "tcyl_6",
"right": "tcyl_7"
}
},
"u0123": {
"id": "u0123",
"name": "union_0_1_2_3",
"op": {
"type": "Union",
"left": "u01",
"right": "u23"
}
},
"u4567": {
"id": "u4567",
"name": "union_4_5_6_7",
"op": {
"type": "Union",
"left": "u45",
"right": "u67"
}
},
"holes": {
"id": "holes",
"name": "all_holes_union",
"op": {
"type": "Union",
"left": "u0123",
"right": "u4567"
}
},
"final": {
"id": "final",
"name": "octagonal_flange_with_holes",
"op": {
"type": "Difference",
"left": "octagon",
"right": "holes"
}
}
},
"materials": {},
"part_materials": {},
"roots": [
{
"root": "final",
"material": "default"
}
]
}