One credit ≈ 500 words of AI help (what you paste + what we return). Longer papers use more credits; short replies use fewer. Monthly credits reset each calendar month.
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Packs cost a bit more per credit than subscribing — enough for a crunch week, with a nudge to upgrade next term. Credits expire after 90 days; caps apply by plan at checkout.
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Credits expire after 90 days
Caps apply by plan