How CAPTCHA API Per-1000 Pricing Works: Billing Formula, Refund Policy, and True Effective Unit Price

CAPTCHA recognition API per-1000 pricing typically divides the per-1000 rate by 1000 and charges per successful recognition; failed tasks are usually not charged or the pre-authorized amount is refunded. This article explains the billing trigger, refund policy, price differences by CAPTCHA type, volume discounts, and how to calculate the true effective unit price based on business success count, including extra costs from retries, score thresholds, proxies, and session issues.