Campus Katral · Lesson 1 · 10 min

Words are not how AI sees words

In one sentence

A language model predicts the next token. A token is a shard of text — not a thought.

Nila

Nila

Campus mentor

AI is not a person. It is a next-word engine with a very good memory of patterns.

Read the idea, watch the picture, then try it with your hands.

Watch the idea

The concept

Text

What you type

Tokens

Shards, not thoughts

Next token

Temperature changes the guess

Words are not how the model sees words

A language model predicts the next token — a shard of text, not a thought. English often splits on spaces and pieces of words. Tamil may split differently, so the same idea can cost more tokens and fit worse in the window.

Temperature is randomness, not honesty

Low temperature: the model picks the most likely next shard. High temperature: it samples stranger shards. That can look creative. It can also look like a confident error. Never treat wildness as evidence.

The desk of notes is finite

The context window is everything the model can see at once: your prompt, the retrieved notes, the chat so far. Overflow, and early instructions fall off the desk. That is a systems fact, not a personality.

Worked example

Same poem, different cost

A twelve-word English line might be twelve tokens. The Tamil translation might be many more. If you paste a long Tamil brief plus sources, you hit the desk limit sooner. Pin the rule at the end.

Picture to keep

Prompt → Tokens → Next token

  1. 1Tokenize
  2. 2Attend
  3. 3Predict