TikZ: a three-set coffee Venn diagram, by gpt-6-sol
gpt-6-sol · round 4 of 2 · seed 5$0.06SVGPNGPDFvenn.tex
venn.tex · 36 lines
\documentclass[tikz,border=12pt]{standalone}
\usepackage[T1]{fontenc}
\begin{document}
\begin{tikzpicture}[font=\sffamily, line join=round]
  \definecolor{espresso}{HTML}{986344}
  \definecolor{milk}{HTML}{608D94}
  \definecolor{cold}{HTML}{5976B3}
  \definecolor{ink}{HTML}{28343B}
  \definecolor{paper}{HTML}{FCFAF6}
  \path[use as bounding box] (-6.35,-5.65) rectangle (6.35,6.05);
  \fill[paper] (-6.35,-5.65) rectangle (6.35,6.05);
  \node[font=\sffamily\bfseries\Large, text=ink] at (0,5.55) {What goes in the cup?};
  % Three translucent sets: the overlap is visible without obscuring the words.
  \fill[espresso,opacity=.16] (-1.85,1.15) circle (3);
  \fill[milk,opacity=.16] (1.85,1.15) circle (3);
  \fill[cold,opacity=.16] (0,-1.45) circle (3);
  \draw[espresso,line width=1.6pt] (-1.85,1.15) circle (3);
  \draw[milk,line width=1.6pt] (1.85,1.15) circle (3);
  \draw[cold,line width=1.6pt] (0,-1.45) circle (3);
  % Set names sit just outside the corresponding outlines.
  \node[font=\bfseries, text=espresso] at (-4.25,4.60) {Has espresso};
  \node[font=\bfseries, text=milk] at (4.25,4.60) {Has milk};
  \node[font=\bfseries, text=cold] at (0,-4.97) {Served cold};
  % Drinks in all seven occupied regions, plus the drink in no set.
  \tikzset{drink/.style={text=ink,font=\sffamily\small,align=center,inner sep=2pt}}
  \node[drink] at (-3.55,1.35) {short black};
  \node[drink] at (3.55,1.35) {babyccino};
  \node[drink] at (0,2.50) {flat white};
  \node[drink] at (-1.78,-1.52) {iced long black};
  \node[drink] at (1.88,-1.52) {milkshake};
  \node[drink] at (0,-0.33) {iced latte};
  \node[drink] at (0,-3.35) {cold brew};
  \node[drink] at (4.40,-3.45) {pour-over};
\end{tikzpicture}
\end{document}

A three-set coffee Venn diagram: GPT-6 Sol

modelopenai/gpt-6-soltasktikz-coffee-venn@v1date2026-09-27rounds4 of 8 allowedcost$0.0589thinkingmediumtokens41,965 in, 3,617 out, of which 2,340 reasoningtime1 min 6 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
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.