Usage-based billing has become essential for AI, SaaS, and tech companies with complex pricing needs, as it aligns costs with value and meets modern customer expectations for transparency and flexibility. According to a 2024 industry survey, more than 60% of SaaS companies now offer some form of pay-as-you-go or consumption-based pricing, a significant increase from 38% in 2021. Implementing a robust usage-based billing system requires sophisticated infrastructure capable of real-time metering, flexible pricing logic, and automated invoice generation to avoid revenue loss, customer churn, or compliance issues. Lago, a provider of billing solutions, demonstrates expertise in supporting high-throughput billing processes for AI and SaaS leaders, offering flexible pricing models, including subscriptions, prepaid credits, and add-ons, with seamless API integration and high event processing capabilities. Lago's platform facilitates automated invoicing, compliance, and supports multiple pricing models, proving advantageous for companies looking to enhance their billing infrastructure and reduce billing errors.