DocETL is a new tool for processing unstructured data, designed to analyze complex documents such as legal or medical texts. This system uses advanced language models (LLM) to break down documents into smaller, more manageable units, making the analysis process more efficient and accurate. DocETL stands out for its ability to optimize processing operations by carefully balancing accuracy and computational cost. This system is particularly useful for companies dealing with large volumes of unstructured data, allowing them to extract key information and gain operational insights more efficiently and precisely.