Photo knob oblique

GPT-5.6 Sol, effort high$0.292m 25s2m 22s waiting on the model2 builds

Reference
iso
front
back
top
bottom
left
right

86of 100

built: 100
geometry: 77
AI judge: 6 of 7

What the AI judge checked

Pass:The overall form matches the reference: the same kind of object, the same silhouette from the matching angle
- Opus 4.8: pass: The rendered part is a short cylindrical knurled knob with a central top hole, matching the reference silhouette.
- GPT-5.6 Sol: pass: The renders show the same cylindrical, low-profile knob silhouette with a flat top, chamfered rims, and textured side.
Fail:Proportions match: the relative sizes of the major dimensions agree with the reference within what the eye can judgeAI judges disagreed
- Opus 4.8: pass: The diameter-to-height ratio of a wide, short disc matches the reference proportions.
- GPT-5.6 Sol: fail: The produced knob appears noticeably taller relative to its diameter than the squat knob in the reference.
Pass:Every major feature visible in the reference (holes, slots, bosses, tabs, lips) is present in the result
- Opus 4.8: pass: The knurled side, top chamfer, and central bore with a flat are all present as in the reference.
- GPT-5.6 Sol: pass: The central D-shaped bore, flat top, diamond-patterned side, and chamfers at both rims are all visible.
Pass:Those features sit where the reference has them
- Opus 4.8: pass: The hole is centered on the top face and knurl covers the side, matching reference placement.
- GPT-5.6 Sol: pass: The bore is centered on the top and the knurled pattern occupies the cylindrical side between the rim chamfers as in the reference.
Pass:Nothing is present that the reference does not show — no decorative or unexplained geometry
- Opus 4.8: pass: No extra geometry beyond knurl, chamfers, and central bore is visible.
- GPT-5.6 Sol: pass: No additional holes, bosses, tabs, slots, or unrelated decorative features are visible.
Pass:A diamond knurl around the side — crossing grooves, not smooth and not straight ridges
- Opus 4.8: pass: The side shows crossing diagonal grooves forming a diamond knurl pattern.
- GPT-5.6 Sol: pass: Two opposing diagonal ridge sets visibly cross around the side to form a diamond knurl pattern.
Pass:A flat top face with a single hole in its centre and nothing else cut into it
- Opus 4.8: pass: The flat top has a single central bore (with the internal flat) and nothing else cut into it.
- GPT-5.6 Sol: pass: The top is flat and contains one centered D-shaped hole with no other visible cuts.

One reviewer

Verdict: acceptable (from the ranking's acceptable line, not typed on this attempt)

Measured

✓ watertight: ok
✓ one sub-part named knob: ok
✓ diameter is 38.13 mm: ok
✗ height is 12 mm ± 10 %: predicate returned false
✓ the bore clears 9.5 mm to 10.64 mm deep: ok
✓ the bore is not oversize: ok
✓ the D flat is where the prompt put it: ok
✓ the flat is not cut too deep: ok
✓ the bore is blind: ok
✗ chamfered at the top rim: predicate returned false
✗ chamfered at the bottom rim: predicate returned false
✓ the side is full at mid-height: ok
✓ the top face is flat out to 34.7 mm: ok

Loading the transcript…

Run baseline-2026-092026-09-10commit 41aec7daspend $339.70 + $48.02 AI judging, 7 unpricedOther runs: 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed