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 1 day 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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[–] ThePinkUnicorn@lemdro.id 3 points 3 hours ago* (last edited 3 hours ago) (1 children)

For training yes, but during operation by this studies measure Deepseek actually has an even higher power draw, according to the article. Even models with more efficient programming use insane amounts of electricity

This was higher than all other tested models, except for OpenAI's o3 (25.35 Wh) and Deepseek's R1 (20.90 Wh).

[–] A_norny_mousse@feddit.org 1 points 1 hour ago

OK I guess I didn't read far enough but your quote says that Deepseek uses less than Open AI?