Auto refill keeps your credit balance topped up automatically so generations aren't interrupted when your balance runs low. You set a threshold, and when your combined plan and purchased credits fall below it, Runway charges your payment method and adds credits to your account. 

Setting up Auto Refill

1. Navigate to Plans & Billing and click Manage in the Auto Refill Credits section.
2. Select or add a card from the Payment method dropdown.
3. Configure the following:
   1. Amount per recharge — How much to charge each time credits are refilled
   2. Maximum spend per month — The most you'll be charged for auto refills in a single month
   3. Refill when credits hit — The credit balance that triggers a refill
4. Save your settings.

Auto refill runs only when your balance is at or below the threshold you set. If a generation would drop your balance below that threshold, the refill runs automatically and your generation continues without interruption.

Tracking refill activity

The Auto Refill section in your billing settings shows how much has been used to auto refill in the current period, your monthly spend limit, and which payment method is being billed. You'll also receive an email notification each time a refill succeeds or fails.

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