OpenAI's pricing and billing strategy leverages token-based metrics to create a predictable and accessible model for users while balancing operational costs and user experience. By adopting a pay-as-you-go system with prepaid credits, OpenAI enhances customer engagement and trust, providing clear insights into usage and expenses. The partnership with Metronome has enabled OpenAI to implement a scalable billing infrastructure that supports its rapid growth and innovation in the AI sector.