Knob then widen

Sonnet 5.5, effort high$0.292m 18s2m 2s waiting on the model2 builds

Reference
iso
front
back
top
bottom
left
right

89of 100

built: 100
geometry: 84
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, allowing for the requested change: 20 % larger in diameter than the photo, height and bore unchanged
- Opus 5.5: pass: The render is a squat knurled cylindrical knob with chamfered top and bottom edges, matching the reference's side silhouette.
- GPT-6 Sol: pass: The render shows the same low, round knurled part with chamfered edges as the reference.
Fail:Proportions match: the relative sizes of the major dimensions agree with the reference within what the eye can judge, allowing for the requested change: 20 % larger in diameter than the photo, height and bore unchangedAI judges disagreed
- Opus 5.5: pass: The side view shows a diameter-to-height ratio of roughly 3.2:1 versus about 2.8:1 in the reference, consistent with a wider diameter at the same height.
- GPT-6 Sol: fail: The rendered side profile looks taller relative to its diameter than the reference, rather than flatter after a 20% diameter increase.
Pass:Every major feature visible in the reference (holes, slots, bosses, tabs, lips) is present in the result, allowing for the requested change: 20 % larger in diameter than the photo, height and bore unchanged
- Opus 5.5: pass: The diamond knurl band, the top and bottom chamfers, and a central bore are all present.
- GPT-6 Sol: pass: The visible chamfered edges and knurled side are present, and the top render shows a bore.
Pass:Those features sit where the reference has them, allowing for the requested change: 20 % larger in diameter than the photo, height and bore unchanged
- Opus 5.5: pass: The knurl covers the side band between the chamfers as in the reference, and the bore is centred on the top.
- GPT-6 Sol: pass: The knurl wraps the side, the chamfers border the top and bottom, and the bore is centred.
Pass:Nothing is present that the reference does not show — no decorative or unexplained geometry, allowing for the requested change: 20 % larger in diameter than the photo, height and bore unchanged
- Opus 5.5: pass: No extra decorative geometry is visible beyond the knurl, the chamfers and the central bore.
- GPT-6 Sol: pass: The renders show no added bosses, slots, or decorative features beyond the knurl and specified bore.
Pass:A diamond knurl around the side — crossing grooves, not smooth and not straight ridges
- Opus 5.5: pass: The side views clearly show crossing diagonal grooves forming a diamond pattern.
- GPT-6 Sol: pass: Crossing diagonal grooves form a diamond pattern around the side.
Pass:A flat top face with a single hole in its centre and nothing else cut into it
- Opus 5.5: pass: The top view shows a flat face with a single central D-shaped hole and nothing else cut into it.
- GPT-6 Sol: pass: The top face is flat and has one central opening with no other cuts.

Measured

✓ watertight: ok
✓ one sub-part named knob: ok
✓ diameter grew by 20 %: ok
✓ height kept: ok
✓ the bore is unchanged: ok
✗ chamfered at the top rim: predicate returned false

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This is an older run. See the current results.

Run kimi31-vs-sonnet2026-11-05commit 0f156dfaspend $12.07 + $2.76 AI judgingOther runs: 2026-11-05T06-56-21-kimi31-sonnet-hard, 2026-10-16T18-49-10-hard-compact-2026-10-16, 2026-09-23T06-56-16-hard-baseline-2026-09-23, 2026-09-10T19-44-23-baseline-2026-09, 2026-09-04T20-02-10-stage2-hard-cases, 2026-09-04T19-48-31-screen-14-fixed