Klarna has leveraged its consumer-centric, AI-powered payment and shopping solutions to reshape global commerce. With over 85 million active users and 2.5 million daily transactions on its platform, Klarna is a fintech leader that simplifies shopping while empowering consumers with smarter, more flexible financial solutions. The company's flagship AI Assistant, built on LangGraph and powered by LangSmith, has revolutionized the shopping and payments experience by handling tasks ranging from customer payments to refunds, and other payment escalations. By overcoming escalation overload and scaling across global markets, Klarna needed a solution that combined speed, accuracy, and accessibility. The company partnered with LangGraph and LangSmith to evolve its AI Assistant into a reliable, scalable multi-agent system, achieving results such as faster resolutions, increased AI automation for chat handling, and improved accuracy. With the help of LangChain, Klarna has delivered superior customer experiences across the globe.