How does an AI actually work?

We said AI predicts the next word. Let's see how it learns to do that.

Step 1: It reads a huge amount of text

Before you ever talk to it, the AI is trained. It reads billions of sentences — books, articles, websites. Nobody hands it a rulebook of grammar. Instead, it slowly notices patterns: which words go together, how questions get answered, how a story flows.

Step 2: It predicts the most likely continuation

Once trained, the AI plays a guessing game every time you use it. You give it some words, and it asks itself: "Given everything I have seen, which word most likely comes next?" It picks a word, adds it, and repeats — word by word — until the answer is complete.

Try it yourself below. Start a sentence and watch how the model suggests what might come next:

[[demo:next-word]]

Notice there is no single "correct" next word — only words that are more or less likely. That is why the same question can give slightly different answers each time.

> Because it works by likelihood, AI can sound confident even when it is guessing. Sounding fluent is not the same as being right — something we will come back to.