Part 1 of 5 · freeIntroduction
You ask an online AI a question, and the answer appears within seconds. The work itself does not happen in your phone. It happens in a data center, a building full of machines that process and store information. Those machines draw electricity around the clock, even though nobody ever sees them.
In 2025, according to the International Energy Agency, all data centers together used about 1.5% of the world's electricity. That figure covers every kind of online service, not AI alone. But facilities built for AI are multiplying fast. A short reply costs little on its own. Yet machines still run for every one of them, and several systems draw power at the same time to produce it.
The rest is in the Sophia app.The remaining parts, the open-book quiz and the full glossary. Free to start; Premium unlocks everything.
- 2Servers come first
- 3Training, then answering
- 4One request has no fixed cost
- 5Power grids under strain
Open-book quiz8 questions whose answers are in the text.
Glossary7 terms explained in a tap.
30 languagesThe same course, from French to Japanese.
