Knob then widen

Kimi K3.1 Pro$0.604m 28s4m 23s waiting on the model3 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 short knurled cylindrical knob with chamfered top and bottom edges, matching the reference's side-view silhouette.
- GPT-6 Sol: pass: The renders show the same low cylindrical, diamond-knurled form with chamfered edges, though its proportions differ.
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's width-to-height ratio is similar to or slightly wider than the reference, consistent with a 20% diameter increase at unchanged height.
- GPT-6 Sol: fail: In the side views, the rendered part is taller relative to its diameter than the reference, rather than flatter as a 20% diameter increase would make it.
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 knurled band and both top and bottom chamfers seen in the reference are present, along with a central bore.
- GPT-6 Sol: pass: The chamfered edges and diamond-knurled side are present, and the render shows the requested 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 spans the side between the top and bottom chamfers as in the reference, and the bore is centred.
- GPT-6 Sol: pass: The knurl wraps the side between the edge chamfers, and the bore is centred on the top.
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 bosses, slots or decorative geometry appear beyond the knurl, chamfers and central bore.
- GPT-6 Sol: pass: The renders show no unexplained bosses, tabs, slots, or decorative features beyond the requested bore and reference features.
Pass:A diamond knurl around the side — crossing grooves, not smooth and not straight ridges
- Opus 5.5: pass: The side shows crossing diagonal grooves forming a diamond pattern around the circumference.
- GPT-6 Sol: pass: Diagonal grooves visibly cross in 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 only a single centred D-shaped hole.
- GPT-6 Sol: pass: The flat top face has one central hole and no other visible 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-sonnet-hard2026-11-05commit 58201d93spend $50.99 + $14.79 AI judgingOther runs: 2026-11-05T05-50-12-kimi31-vs-sonnet, 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