Glossary

Token

A token is roughly three-quarters of a word. It is what models process and what usage is measured in.

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Why it matters

Tokens are the unit models charge in. Matter Chat prices and caps in replies instead, so you never set a token number yourself — but your usage chart counts them, and an intuition for the unit turns an abstract figure into one you can reason about.

  • Usage limits expressed in units nobody has a feel for
  • No sense of what a normal conversation actually consumes
  • Cost caps set to arbitrary round numbers

What counts as a token

Text is split into pieces that are often but not always whole words — common words are usually one token, longer or unusual ones are several. English averages roughly four characters per token, so a hundred words is about 130 tokens.

Where they are consumed

Both directions count, and in a retrieval system the input is usually the larger share: the question, the retrieved passages, and the instructions all enter the context, and the answer is generated on top.

Input

Question, retrieved passages, and system instructions.

Output

The generated answer.

Common questions

How many tokens is a typical support conversation?
It varies with how much content is retrieved, but the retrieved passages usually dominate rather than the visible exchange. The practical approach is to watch a fortnight of real usage in your analytics, then set your daily reply cap above your busiest day.
Does Matter Chat cap tokens or replies?
Replies. Tokens are what a reply costs underneath, and the analytics chart them, but the cap you set is a number of answers per day. That is the unit you are billed in and the one you can reason about — a token cap is precise about cost and useless for predicting how many customers you can serve before the bot goes quiet.

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