arXiv Machine Learning By Amirreza Zeinali, Jon Saad-Falcon, Avanika Narayan, Mersad Abbasi, Jonathan S. Hartley, John Hennessy, Christopher Re, Azalia Mirhoseini

Joules-to-GDP: How Much Economic Value Do AI Systems Produce per Unit of Energy?

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The paper introduces metrics for measuring the economic value produced by AI systems per unit of energy, namely Net Value per Joule (NVJ) and Time Saving per Joule (TSJ). It evaluates 220 public GDPval tasks across 44 occupations using five open-weight models and four accelerator types, finding that the highest dollar value per task does not always align with the highest value per joule. The study highlights variations in performance across models and hardware, such as GLM 5.2 achieving the highest net dollar value and Gemma 4 31B delivering a higher NVJ and TSJ with less energy.

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