As businesses increasingly incorporate large language models (LLMs) and generative AI into their operations, maintaining customer trust and safety becomes challenging due to unpredictable behaviors from AI agents. Automated benchmarks often fall short in capturing the complexities of real-world interactions, especially in specialized domains, necessitating a hybrid evaluation approach that combines human and automated techniques. LangSmith and Labelbox address this need by offering enterprise-grade solutions for LLM monitoring, human evaluation, and data labeling. LangSmith provides a platform for developing, testing, and monitoring LLM applications, offering features like dataset management and prompt experimentation, while Labelbox focuses on optimizing data labeling and supervision to enhance model performance. The integration of these platforms aims to improve the reliability and performance of generative AI applications by leveraging human feedback and advanced monitoring, ultimately enhancing the quality of interactions in production environments.