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Fix price formatting for display of model total cost #42

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Fix price formatting for display of model total cost #42

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14 changes: 8 additions & 6 deletions index.html
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Original file line number Diff line number Diff line change
Expand Up @@ -495,13 +495,15 @@ <h2>Model prices (per million tokens)</h2>
}

function formatCost(totalCost) {
const dollars = trimZeros(totalCost.toFixed(6));
if (totalCost >= 1) {
return `$${dollars}`;
} else {
const cents = trimZeros((totalCost * 100).toFixed(4));
return `$${dollars} (${cents} cents)`;
// Show whole dollar amounts without decimals (e.g. $60)
// and amounts with cents with two decimal places (e.g. $3.20, $0.05).
if (!isFinite(totalCost) || isNaN(totalCost)) return '$0';
const rounded = Math.round(totalCost);
// Treat values very close to integers as integers to avoid floating point noise
if (Math.abs(totalCost - rounded) < 1e-9) {
return `$${rounded}`;
}
return `$${totalCost.toFixed(2)}`;
}

function setPreset(modelKey) {
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