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In the proposed setting, a symbiotic relation between the expansion of AI and the accumulation of human capital stands out as the driver of long-term sustained growth. Two versions of the model are scrutinized. In the first version, the representative capitalist is an optimal planner, while workers (who are heterogeneous regarding their productivity levels) are hand-to-mouth consumers. In the second version, every agent formulates an intertemporal plan and may, simultaneously, be a worker and an investor. 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