TikZ: a three-set coffee Venn diagram, by claude-haiku-5.5
claude-haiku-5.5 · round 1 · seed 1$0.00SVGPNGPDFvenn.tex
venn.tex · 37 lines
\documentclass[tikz,border=10pt]{standalone}
\usepackage[T1]{fontenc}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}
\begin{tikzpicture}[
  every node/.style={font=\small, align=center},
  setlabel/.style={font=\bfseries\normalsize},
]
  % universal set
  \draw[rounded corners=4pt, thick] (-6.2,-4.6) rectangle (6.2,4.4);

  % three circles
  \coordinate (E) at (-1.5,0.9);
  \coordinate (M) at (1.5,0.9);
  \coordinate (C) at (0,-1.2);
  \draw[thick, fill=red!30,   opacity=0.6] (E) circle (2.6);
  \draw[thick, fill=blue!25,  opacity=0.6] (M) circle (2.6);
  \draw[thick, fill=green!30, opacity=0.6] (C) circle (2.6);

  % set labels
  \node[setlabel, anchor=south east] at (-2.6,3.6) {Has espresso};
  \node[setlabel, anchor=south west] at (2.6,3.6) {Has milk};
  \node[setlabel, anchor=north] at (0,-4.0) {Served cold};

  % regions
  \node at (-2.5,0.9) {Short black};
  \node at (2.5,0.9) {Babyccino};
  \node at (0,-2.6) {Cold brew};
  \node at (0,2.1) {Flat white};
  \node at (-1.75,-0.9) {Iced long\\black};
  \node at (1.75,-0.9) {Milkshake};
  \node at (0,0.1) {Iced\\latte};
  \node at (5.0,-3.4) {Pour-over};
\end{tikzpicture}
\end{document}
gallery/A three-set coffee Venn diagram/Claude Haiku 5.5, run 1

A three-set coffee Venn diagram: Claude Haiku 5.5

modelanthropic/claude-haiku-5.5tasktikz-coffee-venn@v1, checks c2, harness h1date2026-10-08rounds1 of 8 allowed, 12 minutes on the clockcost$0.0031thinkingmediumtokens16,936 in, 4,660 out, of which 3,377 reasoningtime34 s
Compilesdecided by a number, from the filepass
Seven regions, three namesdecided by a number, from the filepass
Every drink in its regiondecided by a number, from the filepass
No label on an edgedecided by a number, from the filepass

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
A three-set coffee Venn diagram, by Claude Haiku 5.5, run 2run 2 · 3r · $0.0053A three-set coffee Venn diagram, by Claude Haiku 5.5, run 3run 3 · 1r · $0.0030
same prompt, other modelsall 61 runs on A three-set coffee Venn diagram →
the prompt it was given
Using LaTeX and TikZ, draw a Venn diagram of three overlapping circles labelled "Has espresso", "Has milk" and "Served cold". Write each of these drinks in the region where it belongs: short black, flat white, iced latte, iced long black, cold brew, babyccino, milkshake, pour-over.
Frozen at v1. This model got this and nothing else.
ground truth

Short black is espresso only, flat white espresso and milk, iced long black espresso and cold, iced latte all three, babyccino milk only, milkshake milk and cold, cold brew cold only, and pour-over outside every circle. The circles and words are read back out of the compiled PDF, each word has to be centred in its own region, and no letter may touch a circle's outline, with the line's width counted. How it is scored, and this run's files on GitHub.