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EnergyReported
OpenAI does not disclose GPT-4o's resource footprint, so Stanford's 2026 AI Index Report turned to independent researchers' estimates of the water needed to cool the servers behind it — as much as 1.58 million kilolitres a year for GPT-4o inference, more than the annual drinking-water needs of 1.2 million people
Verified 2026-09-05
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