Coval (YC S24) is a cutting-edge simulation and evaluation platform specifically designed for AI agents, drawing inspiration from methodologies used in the autonomous vehicle sector. This innovative app revolutionizes the testing process by automating evaluations for AI assistants across diverse modalities such as chat and voice. By streamlining the testing workflow, Coval empowers engineers to enhance test coverage and expedite the development cycle. It plays a crucial role in ensuring consistent performance of AI agents, tackling the inefficiencies and inaccuracies associated with manual testing. With Coval, developers can significantly improve the reliability of their AI systems, making it an indispensable tool for advancing AI technology.