AppFolio has released Realm-X Assistant, an AI-powered copilot designed to improve the efficiency of property managers' day-to-day work by providing intelligent, real-time assistance through a conversational interface. The company used LangChain and later transitioned to LangGraph for flexibility and control, simplifying response aggregation and enabling parallel branch execution to reduce latency and code complexity. Additionally, AppFolio leveraged LangSmith to monitor production traffic, pinpoint issues, and iterate on workflows, while also using dynamic few-shot prompting to improve system performance. The company prioritizes user experience and feedback through rigorous testing and evaluation, ensuring high-quality outputs and continuous improvement. With its focus on innovation and expansion, AppFolio continues to empower property managers with the Realm-X Assistant.