Case Study: ChatGPT Scales to Millions of Mobile Subscribers with RevenueCat

How OpenAI scaled ChatGPT to millions of mobile subscribers with RevenueCat

ChatGPT, the mobile app from OpenAI, needed a way to launch quickly while preparing for explosive subscriber growth and global demand. To support monetization and app store billing at scale, OpenAI partnered with RevenueCat.

RevenueCat provided a custom-built subscription infrastructure, including a streamlined SDK mode that reduced backend calls, security enhancements, and support for new app store and iOS 18 subscription flows. The result was a fast launch in just two months, #1 App Store rankings in the U.S., UK, Germany, and other markets, and reliable handling of millions of users and traffic surges without slowing down OpenAI’s product team.

ChatGPT

Sara Conlon

Head of Financial Engineering