This article demonstrates how Cleanlab Studio, an AI tool, can be used to automatically improve the accuracy of a legal judgement prediction model by identifying and correcting issues in large datasets. By using this tool, users can achieve top-quality data and improved models with just a few clicks. The article showcases the effectiveness of Cleanlab Studio on the European Court of Human Rights dataset, where it managed to obtain a 14% error reduction on model predictions compared to state-of-the-art methods like fine-tuned OpenAI Large Language Models.