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Sources & data

Every number on this site comes from one of these sources. Cross-referenced 2025-2026.

Cost of one prompt (reference)

⚡
0.3 Wh
💧
0.3 mL
🌍
0.2 g

The four unit costs, and what each one is

Every figure on this site starts from these four numbers. Two of them are not the same kind of number, and that is stated here rather than hidden.

Artificial intelligence & digital

Electricity

Water

CO₂: transport, food & goods

Source · data updated on June 30, 2026