LangSmith offers a solution to the challenges posed by evaluating outputs from Large Language Models (LLMs) through the development of "self-improving" LLM-as-a-Judge evaluators, which streamline the process of aligning LLM evaluations with human preferences. This approach mitigates the need for extensive prompt engineering by storing human corrections as few-shot examples that inform future evaluations, allowing the system to adapt over time. The concept leverages the strengths of few-shot learning and user feedback, enabling LLM evaluators to assess generative AI systems accurately, addressing essential factors like correctness and relevance. This method enhances the alignment of LLM outputs with human standards, thereby bridging the gap between machine capabilities and human expectations. LangSmith's innovative system facilitates more reliable and efficient evaluation processes, empowering teams to refine their AI applications with confidence.