The text introduces Braintrust, an enterprise-grade stack for building and shipping AI products without guesswork. It highlights the challenges of delivering high-quality, reliable software products in the rapidly evolving AI space, where market demand for AI has skyrocketed. The authors, who have a personal connection to this problem, aim to solve it with Braintrust, which enables faster testing, automated evaluations, easy-to-use datasets, and a collaborative playground for rapid testing. The platform is designed to help teams ship higher-quality products faster, making it accessible for free, including for open-source projects and academic research.