Arewefastyet is an automatic benchmarking tool that runs daily micro and macro benchmarks to monitor Vitess performance. It utilizes PlanetScale's Insights tool for database monitoring, which provides detailed query-level insights. By leveraging Insights, Arewefastyet was able to detect slow queries and improve their performance by 85% through the addition of indexes. The tool allows users to easily identify problematic queries, debug issues, and make data-driven improvements in a timely manner.