“The most investment on AI data centers is being done by Microsoft, with most spent on GPUs($20 billion) and other AI spend ($20 billion) which makes total capex of $40 billion. The cost spent on training and R&D by Microsoft is $3 billion, cost on inference is $3 billion which makes total operating cost of $6 billion. This makes a total of $46 billion that Microsoft is spending on AI data centers.”
https://www.digitalinformationworld.com/2024/12/the-hidden-cost-of-innovation-how-tech.html