← mecheval / run / a3-octagonal-flange-01 / openai-direct-gpt-4o-mini / 20260428T232606Z-bd4a
run 20260428T232606Z-bd4a
Summary
| status | fail |
| score | 0.00 (0/6) |
| submission | self-run |
| model | openai-direct-gpt-4o-mini (openai) |
| started | 2026-04-28T23:26:06.101Z |
| ended | 2026-04-28T23:26:20.223Z |
| tokens | 669 in · 827 out · 1,496 total |
| wallclock | 14.1s |
| tool calls | 1 |
| task hash | 91605c57469285ce… |
| vcad hash | 4cfc6e9812520d98… |
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 type: map, expected u64 at line 134 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
14114ms
args
{
"model": "gpt-4o-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": {
"1": {
"id": 1,
"name": "Octagonal Prism",
"op": {
"type": "Cube",
"size": {
"x": 40,
"y": 40,
"z": 8
}
}
},
"2": {
"id": 2,
"name": "Bolt Hole",
"op": {
"type": "Cylinder",
"radius": 2.5,
"height": 8,
"segments": 32
}
},
"3": {
"id": 3,
"name": "Holes",
"op": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": 15,
"y": 0,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": 10.606601,
"y": 10.606601,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": 0,
"y": 15,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": -10.606601,
"y": 10.606601,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": -15,
"y": 0,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": -10.606601,
"y": -10.606601,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": 0,
"y": -15,
"z": 0
}
},
"right": {
"type": "Union",
"left": {
"type": "Translate",
"child": 2,
"offset": {
"x": 10.606601,
"y": -10.606601,
"z": 0
}
},
"right": {
"type": "Translate",
"child": 2,
"offset": {
"x": 15,
"y": 0,
"z": 0
}
}
}
}
}
}
}
}
}
}
},
"4": {
"id": 4,
"name": "Flanged Octagon",
"op": {
"type": "Difference",
"left": 1,
"right": 3
}
}
},
"materials": {},
"part_materials": {},
"roots": [{ "root": 4, "material": "default" }]
}