Packs are one-time purchases for months that need more than your allowance. Buy them from Settings, under Usage or Plan & billing.
Pack credits never reset. They stay until spent and expire only 2 years after purchase.
Your plan credits spend first each cycle; packs are the reserve.
Packs survive cancellation, though spending credits requires an active plan.
Six sizes are listed on the billing page, from Opening (50 credits, $17) to Legend (5,000 credits, $1,275). Your plan discounts them: 5% off on Creator, 10% on Pro, 15% on Max.
For what credits pay for, see the how credits work article.
