Next-token prediction in JavaScript

In plain words

Next-token prediction in JavaScript is a language model implementation that predicts the next word in a sequence based on training data. Built in JavaScript, it leverages the language's object structure to efficiently store and retrieve word patterns for prediction tasks. The project demonstrates how language understanding can be modeled as a word prediction problem, using JavaScript's fast object lookup to find known sentence patterns rather than recursive text searching.

written from the facts on this page · September 2026

From the sources

Next-token prediction in JavaScript — build fast language and diffusion models. - bennyschmidt/next-token-prediction

In the maker’s words, at launch

What inspired this project today was watching this amazing video by 3Blue1Brown called "But what is a GPT?" on Youtube (https://www.youtube.com/watch?v=wjZofJX0v4M - I highly recommend watching it). I added it to the repo for reference. When it clicked in my head that "knowing a fact" is nearly…

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