How LLMs Work
Interactive visual guide based on Karpathy's lecture
Get picks like this daily. Today's launch numbers, the top launches, AI and tech news, and a daily opportunity pick, straight to your inbox.
Want to reach these readers? Sponsor an issue.
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.
HN · launched Apr 24, 2026 · 245 upvotes (top 3%) · 0 views
Niche: educational games and learning tools · 207 launches, 24 in the last 7 days ▲ +50% · Explore this niche →
Category and tags
- Education
- Content generation
- B2C
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 207 launches in educational games and learning tools →
Could you build this?
Yes The creator noted it was generated as a single HTML file from a transcript using Claude Code; it is static educational content with interactive diagrams.
Discussion
20 comments analyzed.
Competitors mentioned: Jay Alammar's Illustrated GPT-2 guide, Jay Alammar's free course on how LLMs work, tiktokenizer (for tokenization visualization)
Concerns raised: LLM-generated content lacks original value, BPE visualization misleadingly shows tokens being replaced rather than additively created, Tokenizer example performs poorly on made-up words, Skips attention mechanism entirely, Hallucinations in LLM-generated content
Feature requests: Move tokenization to end, start with byte-level model input/output, Explain attention mechanism in depth, Improve BPE visualization accuracy, Better top navigation bar (v2 addressed this)
Competitors
Other products that read as similar to this one : 149 launches clear the similarity bar, closest 8 shown.
Attention rank: #13 of 150 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 169 days after the earliest competitor.
- I used Claude Code to discover connections between 100 books · hn · 2026-01-10 · 524 upvotes · similarity 0.47
- LLM Unboxed · ph · 2026-10-20 · 2 upvotes · similarity 0.46
- Mcptube · hn · 2026-04-13 · 13 upvotes · similarity 0.46
- Building an LLM from Scratch in TypeScript · hn · 2026-10-14 · 33 upvotes · similarity 0.44
- explain-skill · github · 2026-10-27 · 17 upvotes · similarity 0.43
- LLM Wiki Compiler Inspired by Karpathy · hn · 2026-04-06 · 7 upvotes · similarity 0.43
- learn-how-llm-works · github · 2026-10-31 · 17 upvotes · similarity 0.43
- Data Engineering Book · hn · 2026-02-13 · 251 upvotes · similarity 0.43
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.