# Credits

Understand how credits work, track usage, and top up.

## Articles

1. [Refunds for a failed or incorrect run](/content/help/category/credits/credit-refund-failed-run/index.html) - What to do when credits were used on a run that failed or went wrong. (2 min)
2. [Out of credits: top up or upgrade](/content/help/category/credits/out-of-credits-top-up-or-upgrade/index.html) - Choose between a one-time top-up, auto top-ups, and moving to a higher plan. (3 min)
3. [How credits work and how to save them](/content/help/category/credits/how-credits-work/index.html) - What uses credits, what a typical task costs, and how to make your allowance last. (4 min)
4. [Referral and reward credits](/content/help/category/credits/referral-and-reward-credits/index.html) - Why referral and reward credits sometimes do not appear, and how to fix it. (3 min)
5. [I paid but my credits haven't shown up](/content/help/category/credits/paid-but-credits-not-showing/index.html) - What to do if your balance hasn't updated right after a payment. (2 min)

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