this post was submitted on 15 Aug 2025
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ChatGPT 5 power consumption could be as much as eight times higher than GPT 4 — research institute estimates medium-sized GPT-5 response can consume up to 40 watt-hours of electricity (www.tomshardware.com)
submitted 18 hours ago by homesweethomeMrL@lemmy.world to c/technology@lemmy.world
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The University of Rhode Island's AI lab estimates that GPT-5 averages just over 18 Wh per query, so putting all of ChatGPT's reported 2.5 billion requests a day through the model could see energy usage as high as 45 GWh.

A daily energy use of 45 GWh is enormous. A typical modern nuclear power plant produces between 1 and 1.6 GW of electricity per reactor per hour, so data centers running OpenAI's GPT-5 at 18 Wh per query could require the power equivalent of two to three nuclear power reactors, an amount that could be enough to power a small country.

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[–] yesman@lemmy.world 36 points 16 hours ago (9 children)

I think AI power usage has an upside. No amount of hype can pay the light bill.

AI is either going to be the most valuable tech in history, or it's going to be a giant pile of ash that used to be VC capital.

[–] homesweethomeMrL@lemmy.world 3 points 14 hours ago

That capital was ash earlier this year. The latest $40 Billion-with-a-B financing round is just a temporary holdover until they can raise more fuel. And they already burned through Microsoft, who apparently got what they wanted and are all “see ya”.

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