How LLMs Work – Interactive visual guide based on Karpathy's lecture

Name: How LLMs Work – Interactive visual guide based on Karpathy's lecture
Availability: InStock
Author: ynarwal__

by ynarwal__·Apr 24, 2026·245 points·55 comments

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AI Analysis

●●SolidEye CandyCozyRabbit Hole

Interactive Karpathy lecture visualizer when static blog posts already explain this.

Strengths

•Live tokenizer demo lets you type text and see BPE tokenization in real time
•Single HTML file with no dependencies, loads instantly and works offline
•Click-to-reveal pipeline stages make complex training process digestible

Weaknesses

•Content derived entirely from existing lecture, no novel technical insights
•Educational LLM explainers are crowded with similar interactive alternatives

Post Description

All content is based on Andrej Karpathy's "Intro to Large Language Models" lecture (youtube.com/watch?v=7xTGNNLPyMI). I downloaded the transcript and used Claude Code to generate the entire interactive site from it — single HTML file. I find it useful to revisit this content time to time.