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Deb's avatar

Here's what ChatGPT told me:

what is the estimated annual cost of an average person using ChatGPT each day in lieu of a search engine?

ChatGPT said:

Great question—let’s estimate the annual energy and dollar cost of a person using ChatGPT daily instead of a traditional search engine like Google.

⚙️ Assumptions

Factor Value

Daily usage 10 questions/day

Days/year 365

Energy per ChatGPT query ~0.005–0.01 kWh

Energy per Google search ~0.0003 kWh

Electricity cost $0.15/kWh (U.S. average)

🔋 Annual Energy Use

ChatGPT

10 queries/day × 365 days × 0.0075 kWh (average)=27.375 kWh/year

10 queries/day×365 days×0.0075 kWh (average)=27.375 kWh/year

Google (for comparison)

10×365×0.0003=1.095 kWh/year

✅ ChatGPT uses ~25× more energy per query than Google, due to the complexity of running large AI models.

💵 Annual Dollar Cost

ChatGPT 27.375 ×$0.15=$4.11/𝑦𝑒𝑎𝑟

27.375×$0.15=$4.11/year

Google

1.095×$0.15=$0.16/𝑦𝑒𝑎𝑟

1.095×$0.15=$0.16/year

✅ Summary

Metric ChatGPT Google

Annual energy ~27.4 kWh ~1.1 kWh

Annual cost ~$4.11 ~$0.16

So if one average person used ChatGPT for 10 queries a day instead of Google, it would cost about $4/year in energy—small in personal terms, but meaningful when scaled across millions of users.

Let me know if you want the carbon footprint comparison too!

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