When you save with Enable Auto-Blog on, Sprwt estimates how many articles will still run in the current calendar month (starting tomorrow, limited by Max articles per month), multiplies by $25, adds $250 if the Backlinking Add-on is on, then adds a 3.5% processing fee. That Monthly total is charged to your card on file through Stripe as a monthly subscription (described as Blog AI — N articles/mo, plus + Backlink when the add-on is on), and the same subscription is updated to the new amount whenever you save changes. The Billing & Safety Cap box shows the breakdown (N articles x $25, Backlinking add-on, Subtotal, Processing fee (3.5%), Monthly total) and, once active, the Active Schedule view shows the Monthly subscription amount and subscription ID. Sprwt support also receives an email summary of each charge. Individual articles are not billed one at a time — the subscription is a flat monthly amount based on the estimate — but each article generation step still draws a small amount of AI Wallet credit for the title, text and featured image, so keep some balance in the wallet.