Generative AI is gaining popularity, but its reliability needs to be tested to ensure it operates ethically and effectively. Evaluating AI agents helps assess their performance in various tasks, such as data analysis, customer service, content creation, and software development. The evaluation process involves testing accuracy, effectiveness, efficiency, robustness, and ethical compliance of the agent's behavior. To measure these aspects, a combination of structured metrics like task completion rates, adaptive task evaluations, and quantitative techniques like benchmarking is used. Additionally, human oversight is crucial to ensure that AI agents align with human values and expectations. The evaluation framework should be designed to balance factors for effectiveness and efficiency, optimize accuracy relative to inference costs, and incorporate feedback loops for continuous improvement. As AI agents advance, new metrics and tools will be needed to capture advanced capabilities like autonomous decision-making and emergent properties.