# Next Token Prediction, Explained in Plain Language > Source: > Published: 2026-08-21 12:00:00+00:00 # Next Token Prediction, Explained in Plain Language An AI writes one little piece at a time. It never knows the whole sentence up front — it only ever picks **what comes next**. ## Words get cut into pieces The pieces are called **tokens**. A short word is usually one piece. A long word breaks into a few. ## It's read a mountain of text It has seen, over and over, **which piece usually follows which**. That's all the "knowing" it really does. ## It scores every possible piece Not one answer — a **whole list**, each with a score. "jelly" scores highest here. "rocks" barely registers, but it still gets a number. ## Pick one Usually the top score wins. Sometimes it rolls dice weighted toward the tall ones instead — just enough to keep the writing from sounding the same every time. ## Do that a few hundred times Score the list, pick a winner, glue it onto the end — then ask again with the whole longer line. Watch the table underneath update each round as a new piece gets picked and stitched on. No plan, no outline — just the next little piece, guessed over and over, until it decides to stop. **Next token prediction** — that's the real name for it.