API pricing involves selecting the right metrics and pricing models to maximize revenue while balancing customer retention. Common metrics include charging per API call, request/response body count, unique user, or API key, with pricing models ranging from standard and package to graduated and volume-based. Determining API pricing also requires considering costs, added value, and whether to use subscription or usage-based models. Regularly assessing and adjusting pricing ensures competitiveness and value delivery, while integrating features like SLA and support can enhance revenue. Moesif aids in API monetization by providing analytics to identify valuable endpoints, optimize pricing, and track usage and retention, offering tools for implementing and managing monetization strategies efficiently.