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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[–] plyth@feddit.org 1 points 13 hours ago* (last edited 13 hours ago) (2 children)

That are 25 request per kWh. At 10 to 25cents per kWh that's 1cent per request. That doesn't seem to be too expensive.

[–] MangoCats@feddit.it 2 points 10 hours ago

Which is why they're giving everybody free access, for now.

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