What is the term for curves that show costs declining at a predictable rate as experience with a product increases?

The term that describes curves illustrating costs declining at a predictable rate as experience with a product increases is "Experience Curves." Experience curves depict the relationship between accumulated production experience and the costs of production. As production increases and employees become more skilled, processes are refined, and efficiencies are found, the average costs per unit typically decrease. This phenomenon relates closely to the idea that with increased familiarity and learning, both from a labor and production standpoint, organizations can achieve greater efficiency, leading to lower costs.

Learning curves are similar in describing how individuals or organizations gain proficiency over time, but they specifically highlight the speed of learning rather than the cost aspect over time. Cost curves refer broadly to graphical representations of costs against various levels of output but do not necessarily capture the experiential aspect reflected in experience curves. Efficiency curves illustrate the relationship between output and efficiency but again do not specifically address the cost behavior linked to experience and learning.