Language Model Builder (an app to learn about and build models)

In plain words

Language Model Builder is an educational app that helps users learn about and construct language models. Designed for people interested in machine learning and natural language processing, it provides hands-on tools to understand how these systems work. The app breaks down complex concepts into learnable components, making it accessible to both beginners and those with some technical background. It launched in July 2026 and is available at languagemodelbuilder.com.

written from the facts on this page · September 2026

From the sources

Language Model Builder Learn how to build AI from scratch (for free!) One of the best ways to understand technology, especially when it seems like magic, is to build a small version yourself. Language Model Builder explains the foundations behind mainstream AI tools and lets you build models from scratch. Choose a tokenizer and training data, watch the loss fall during pre-training, teach the model to answer questions, and end up chatting with something that you made. Language Model Builder has two parts: It offers both a textbook-style introduction to the foundations of how language models are built as well as beautifully designed tools for actually building a model. I often find myself…from languagemodelbuilder.com

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