Statsig has collaborated with Langchain to develop a new package, statsig-langchain, which facilitates online experimentation in AI applications by allowing developers to set up event logging and experiment assignments quickly. The integration offers tools for managing parameters and logging inputs and outputs, providing visibility into model and user metrics such as cost and latency. This setup allows developers to run experiments without extensive code changes, thereby gaining insights into feature performance and user engagement. The package is aimed at developers using OpenAI for building chatbot-style applications, with plans to expand support to other languages and extensions. The collaboration emphasizes the importance of online experimentation for refining AI applications, highlighting examples where traditional offline testing may fail to capture user interaction nuances. The package aims to streamline experimentation by linking Langchain applications with Statsig's infrastructure, offering a comprehensive approach to evaluate AI systems in real-world conditions.