This study's primary goal is to investigate and gain better knowledge of the relationship between ChatGPT usage dimensions such as analyzing data, managing risk, optimizing portfolios, forecasting market trends, and conducting sentiment analysis and investment decisions of investors in the Pakistan stock market, as well as the moderating role of financial literacy. The sample for this study included individual stock market investors in Pakistan. Using a self-administered questionnaire and a cross-sectional design, a non-probability convenience sampling technique followed by snowball techniques was used to collect data from 388 active and potential individual investors. The study's findings showed that ChatGPT usage dimensions have a positive and significant impact on investment decision making. Furthermore, financial literacy is found to moderate the relationship between optimizing portfolios, forecasting market trends, and investment decision making. The study's findings outlined practical implications for the researcher, financial advisors, individual investors, governmental decision-makers, policymakers, and stock market authorities who are interested in leveraging the benefits of artificial intelligence and machine learning in investment decision making in the context of emerging economies like Pakistan.