# Token (AI): what it is and how it works · Zorraquino
> A token is a unit of representation that a model uses to process information, such as a word, part of a word or a symbol.
URL: https://www.zorraquino.com/en/dictionary/ai-token

# Token (AI)

A token is a unit of representation that a model uses to process information, such as a word, part of a word or a symbol

What it means, how it is used and where it comes up, with its related concepts.

[The whole glossary](https://www.zorraquino.com/en/dictionary)

## What it is and how it works

How text is split depends on the tokenisation system and the type of content. Context limits and part of the cost of some services are expressed in tokens. A token does not correspond to a fixed word or number of characters.

Also known as

Language token

Topics

[Artificial intelligence](https://www.zorraquino.com/en/dictionary/category/inteligencia-artificial)

## Related concepts

- [Foundation model](https://www.zorraquino.com/en/dictionary/foundation-model)
- [Multimodal model](https://www.zorraquino.com/en/dictionary/multimodal-model)
- [Small language model](https://www.zorraquino.com/en/dictionary/small-language-model)