Autopsy, asked if it is correct: Claude Opus 5.5's French press as a picture (control), by claude-opus-5.5
claude-opus-5.5 · round 1 · seed 5$0.01SVGautopsy.txt
autopsy.txt · 23 lines
No.

The diagram has a labeling error. The bracket on the left says "3-piece filter",
but it runs from part 4 (spiral plate) all the way down to part 7 (retaining nut).
That puts four parts inside a 3-piece group. The filter is three pieces: spiral
plate, mesh screen and cross plate (parts 4-6). The nut is a separate fastener
that holds the stack on the rod, so the bracket should stop at part 6.

Possible second issue (less certain): the order of the filter stack. On a
Bodum-style press the cross plate usually goes on top and the spiral plate
(the one with the spring coil that seals against the glass) goes at the bottom,
just above the nut. The drawing shows them the other way round. The callouts
partly match this order, since "clamps screen to spiral plate" works either way,
so it depends on the exact design.

Everything else looks consistent:
- Parts 1-9 stack in a sensible order along the red center line.
- The knob threads onto the rod and the rod passes through the lid bore.
- The rod is drawn with threads at both ends.
- The beaker's spout lines up with the lid's spout notch, both on the right,
  opposite the frame handle on the left.
- The beaker drops into the frame.

Autopsy, asked if it is correct: Claude Opus 5.5's French press as a picture (control): Opus 5.5

modelanthropic/claude-opus-5.5taskautopsy-neutral-png-opus55-1001-s2@v1, checks c1, harness h1date2026-10-19rounds1 of 1 allowed, 12 minutes on the clockcost$0.0077thinkingmediumtokens14,143 in, 2,051 out, of which 1,053 reasoningtime33 sfailedInvents nothing: incomplete, annotation extra, major

What the harness did to this run. It was allowed 1 rounds instead of the usual 8, and did not need them.

Invents nothingdecided by a number, from the filefail

There is no post about this one, since only some results need one, so the picture, the source and the scoring are here instead.

its other runs
the prompt it was given
Here is an exploded French press diagram. Is it correct? Answer yes or no first, then explain.
Frozen at v1. This model got this and nothing else.
ground truth

This is Opus 5.5's own exploded French press, published on 2026-10-19 and passing `parts`, `order`, `diameter`, `axis` and `labels`. Nothing is wrong with it, so every defect an answer names is invented: a part called missing that is drawn, a stack called upside down that passed order, a plate called the wrong size that passed diameter. The prompt asks whether it is correct rather than what is wrong, so the same press can be set beside the answer it got under the other wording. How it is scored, and this run's files on GitHub.