Stats

Typesets its apps: tabular-nums on figures and · between metadata, more of both than any model.

Gray

slate53%

Accent

indigo

Corners

rounded-md

• Draws icons from one table of SVG paths through an <Icon name> component, in 8 of its 12 apps; no other model does in more than 3

  const ICONS = {
    inbox: [
      'M22 12h-6l-2 3h-4l-2-3H2',
  // …
  type IconName = keyof typeof ICONS;
  // …
  {ICONS[name].map((d) => (
    <path key={d} d={d} />
  ))}

  Email client
• Switches off React's exhaustive-deps rule 14 times, twice as often as any other model

  const starredCount = useMemo(() => items.filter((i) => i.starred && isAlive(i)).length, [items]); // eslint-disable-line react-hooks/exhaustive-deps

  File browser

Warm stone grays in light mode that flip to cool zinc in dark mode.

Gray

zinc58%

Accent

teal

Corners

rounded-md

• Handlers are nested functions, rarely named handleX

  function markRead(id: string) {
    setThreads((current) =>
      current.map((thread) =>
        thread.id === id
          ? { ...thread, messages: thread.messages.map((item) => ({ ...item, unread: false })) }
          : thread,
      ),
    );
  }

  Email client
• Respects reduced motion in 5 of its 12 apps, more than any model; only two others do, in 4 apps between them

  <div className="h-24 animate-pulse rounded-xl bg-stone-200 motion-reduce:animate-none dark:bg-slate-800" />

  Analytics dashboard

Offers several names for one prop: leftIcon, leadingIcon, startIcon and iconStart.

Gray

slate73%

Accent

blue

Corners

rounded

• About 70 JSX comments per app, nearly five times the next model

  {/* Navigation Section */}
  <div className="flex-1 overflow-y-auto px-2 space-y-5 py-1 text-xs">
    {/* Mailboxes Group */}

  Email client
• Exports every interface, even in a one-file app

  export interface LabelInfo {
    id: LabelId;
    name: string;
    dotColor: string;
    badgeBg: string;
    badgeText: string;
  }

  Email client

Builds apps from tiny primitives like IconButton, Kbd and EmptyState around a thin root.

Gray

slate45%

Accent

indigo

Corners

rounded-md

• JSDoc on the props of all 21 components; six models write none

  /** Visual style of the button. */
  variant?: ButtonVariant;
  /** Size preset. `icon` renders a square button intended for a single icon child. */
  size?: ButtonSize;
  /** Shows a spinner, sets `aria-busy`, and prevents interaction while true. */
  loading?: boolean;

  Button component
• Switches off React's exhaustive-deps rule 7 times, second only to Opus 5.5

  () => sliceData(records, filters, currentStart, filters.range),
  // eslint-disable-next-line react-hooks/exhaustive-deps
  [records, filters.range, filters.channel, filters.device, filters.country],

  Analytics dashboard

Packs whole panels onto single lines, some over 3,600 characters, with no comments.

Gray

slate94%

Accent

indigo

Corners

rounded-lg

• Snapshots undo history with structuredClone, which no other model uses

  const snapshot = useCallback((): History => ({ sheets: cloneSheets(sheets), sheetId, selection: structuredClone(selection) }), [sheets, sheetId, selection]);

  Spreadsheet
• focus: rings where others use focus-visible

  className="ml-auto rounded-md p-1.5 text-slate-400 hover:bg-slate-200 hover:text-slate-700 focus:outline-none focus:ring-2 focus:ring-violet-500 dark:hover:bg-slate-800 dark:hover:text-slate-200"

  Email client

Switches gray family from file to file: zinc, neutral, slate or plain gray.

Gray

slate36%

Accent

blue

Corners

rounded-lg

• Keeps SVG gradient ids unique with useId

  const gid = useId();
  // …
  <linearGradient id={gid} x1="0" y1="0" x2="0" y2="1">

  Analytics dashboard
• Memoizes spreadsheet cells with React.memo

  const CellView = React.memo(function CellView(props: CellViewProps) {

  Spreadsheet

Comment-free apps in 1,000-character lines, a third without spaces after commas.

Gray

slate100%

Accent

indigo

Corners

rounded-lg

• Its Icon helper opens exactly like GPT-5.6 Sol's

  const Icon = ({ name, className = "h-4 w-4" }: { name: string; className?: string }) => {

  Analytics dashboard
• Handlers are bare verbs like update() and open()

  const update = (id:string, change:Partial<Mail>) => setMails(ms=>ms.map(m=>m.id===id?{...m,...change}:m));
  const open = (m: Mail) => { setSelected(m.id); if(m.unread) update(m.id,{unread:false}); };

  Email client

Comment-free lines thousands of characters long, hand-tuned with values like tracking-[.18em].

Gray

slate100%

Accent

indigo

Corners

rounded-lg

• Reaches for Array.at(-1), which no other model's apps use

  const prev = history.at(-1); if (!prev) return;

  Spreadsheet
• Unicode glyphs like ◈ and ▶ stand in for icons

  {kind === "image" ? "◈" : kind === "video" ? "▶" : kind === "sheet" ? "XLS" : kind === "archive" ? "ZIP" : kind.toUpperCase()}

  File browser

Writes each app like a documented codebase: product banner, section dividers, small components.

Gray

slate52%

Accent

indigo

Corners

rounded-md

• A named SVG component for every icon

  function PlusIcon(props: React.SVGProps<SVGSVGElement>) {
    return (
      <svg viewBox="0 0 20 20" fill="none" stroke="currentColor" strokeWidth={2} strokeLinecap="round" strokeLinejoin="round" {...props}>
        <path d="M10 4v12M4 10h12" />
      </svg>
    );
  }

  Calendar
• Splits apps into the most components, down to a one-line divider

  function ToolbarDivider() {
    return <div className="mx-1 h-5 w-px bg-slate-300 dark:bg-slate-600" aria-hidden="true" />;
  }

  Spreadsheet

Compressed TypeScript: one-line interfaces and tiny positional factories like mk() and att().

Gray

slate97%

Accent

blue

Corners

rounded-md

• The only model to size charts with ResizeObserver

  const ro = new ResizeObserver((entries) => {
    for (const e of entries) setWidth(Math.max(320, e.contentRect.width));
  });
  ro.observe(el);

  Analytics dashboard
• Toggles dark mode on the host page's <html>, outside its own root

  if (dark) document.documentElement.classList.add("dark");
  else document.documentElement.classList.remove("dark");

  Calendar

Stiff, nearly contraction-free UI copy: “I am seeing a weird flicker.”

Gray

slate70%

Accent

indigo

Corners

rounded-md

• Writes custom hooks in 5 of its 12 apps, more than any model

  function useDropdown() {
    const [open, setOpen] = useState(false);
    const ref = useRef<HTMLDivElement>(null);
    useEffect(() => {
      function onClick(e: MouseEvent) {

  Issue tracker
• Follows the OS theme live with a matchMedia listener

  const m = window.matchMedia('(prefers-color-scheme: dark)');
  setSystemDark(m.matches);
  const handler = (e: MediaQueryListEvent) => setSystemDark(e.matches);
  m.addEventListener('change', handler);

  Settings

Hedges component APIs with fallback chains like props.startIcon ?? props.leadingIcon ?? props.iconStart.

Gray

zinc51%

Accent

blue

Corners

rounded-lg

• Box-drawing // ─── section ─── banners

  // ─── Types ──────────────────────────────────────────────────────────────────

  Email client
• Hard-codes the 1280px frame into its layout math

  const left = Math.min(anchor.x, 1280 - panelW - 16);

  Calendar

One giant, comment-free component per app, 570 to 1,150 lines long.

Gray

slate96%

Accent

blue

Corners

rounded-md

• Memoizes values but never callbacks: no useCallback in any of its 12 apps

  const mailboxStats = useMemo(() => {
    const unreadByMailbox: Record<Mailbox, number> = {
      inbox: 0,

  Email client
• Verb-first actions like archiveThread, rarely handleX

  function toggleStar(threadId: string) {
    setThreads((prev) => prev.map((thread) => (thread.id === threadId ? { ...thread, starred: !thread.starred } : thread)));
  }
  
  function archiveThread(threadId: string) {

  Email client

Pastes Feather and Heroicons SVG source verbatim, down to xmlns and closing </line> tags.

Gray

gray62%

Accent

blue

Corners

rounded

• Writes any 111 times, where five models never do

  Inbox: (props: any) => <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round" {...props}>

  Email client
• shadcn animate-in classes that plain Tailwind ignores

  className="bg-white dark:bg-gray-800 rounded-xl shadow-2xl w-full max-w-md overflow-hidden animate-in fade-in zoom-in-95 duration-200"

  Calendar

Swaps drawn icons for emoji and glyphs: ⏸ ⏭ transport buttons, 📊 empty states.

Gray

gray66%

Accent

blue

Corners

rounded

• Asks picsum for random photos, so images change on every load

  url: 'https://picsum.photos/600/400?random=1'

  Social feed
• Math.random() in its mock data, despite the ban

  stats.visitors > 0 ? (Math.random() * 0.12 + 0.06) * 100 : 0,

  Analytics dashboard