TikZ: a three-set coffee Venn diagram, by claude-opus-5.5
claude-opus-5.5 · round 2 of 2 · seed 2$0.10SVGPNGPDFvenn.tex
venn.tex · 32 lines
\documentclass[border=5pt]{standalone}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}[font=\sffamily\small]
  \def\r{2.3}
  \coordinate (A) at (0,0);      % espresso
  \coordinate (B) at (2.8,0);    % milk
  \coordinate (C) at (1.4,-2.4); % cold
  \draw[rounded corners, thick] (-3.2,-5.6) rectangle (6.0,3.3);
  \node[anchor=north west] at (-3.1,3.25) {All drinks};
  \fill[red!60!black, opacity=.18] (A) circle (\r);
  \fill[blue!60, opacity=.18] (B) circle (\r);
  \fill[cyan!70!green, opacity=.18] (C) circle (\r);
  \draw[thick, red!60!black] (A) circle (\r);
  \draw[thick, blue!70] (B) circle (\r);
  \draw[thick, cyan!60!black] (C) circle (\r);
  % circle labels
  \node[font=\sffamily\bfseries, red!60!black] at (-0.6,2.6) {Has espresso};
  \node[font=\sffamily\bfseries, blue!70!black] at (3.4,2.6) {Has milk};
  \node[font=\sffamily\bfseries, cyan!40!black] at (1.4,-5.0) {Served cold};
  % drinks
  \node at (-0.8,0.5) {short black};
  \node at (3.6,0.5) {babyccino};
  \node at (1.4,-3.5) {cold brew};
  \node at (1.4,0.9) {flat white};
  \node at (1.4,-0.8) {iced latte};
  \node[align=center] at (0.05,-1.75) {iced\\long black};
  \node at (2.62,-1.62) {milkshake};
  \node at (4.9,-4.8) {pour-over};
\end{tikzpicture}
\end{document}
gallery/A three-set coffee Venn diagram/Opus 5.5, run 2

A three-set coffee Venn diagram: Opus 5.5

modelanthropic/claude-opus-5.5tasktikz-coffee-venn@v1date2026-09-29rounds2 of 8 allowedcost$0.0952thinkingmediumtokens26,355 in, 2,090 out, of which 704 reasoningtime54 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 Opus 5.5, run 1run 1 · 2r · $0.0933A three-set coffee Venn diagram, by Opus 5.5, run 3run 3 · 1r · $0.0537
same prompt, other modelsall 50 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.