Usage-based pricing, a traditional model for APIs, charges customers based on resource consumption such as API calls or data volume, proving straightforward and scalable. However, this approach is increasingly inadequate for intelligent, AI-driven platforms where raw consumption does not necessarily equate to value. This has sparked a shift toward outcome-based pricing, where charges are aligned with the results achieved, such as successful transactions or qualified leads, rather than mere activity. This model better aligns with customer value by focusing on measurable performance metrics, requiring deep observability and instrumentation to track meaningful outcomes. Platforms like Moesif facilitate this transition by enabling API providers to define, track, and bill based on outcome events, offering tools to connect these metrics to revenue operations. This shift encourages product teams to focus on value creation, enhancing customer satisfaction and retention while supporting sustainable growth.