# Transformer Explainer

12 Hacker News commenters recommended Transformer Explainer and 0 criticized it, November 2025 to November 2026. It was recommended in 6 of 13 months. It meets the Hacker Approved badge rule.

**Verdict:** People recommend it as a clear, interactive visualization for understanding how transformers and GPT-2 work.

## Why people recommend it

- Clear, intuitive visual explanations (3 comments): "This is hands down one of the best visualizations I have ever come across." ([source](https://news.ycombinator.com/item?id=46359952)) "i found this much more intuitive to follow" ([source](https://news.ycombinator.com/item?id=46366411)) "putting some amazing visualizations" ([source](https://news.ycombinator.com/item?id=46358003))
- Thorough explanations of how transformers work (2 comments): "this explanation of how transformers work is in the same class as Ciechanowski's work IMO" ([source](https://news.ycombinator.com/item?id=48559925)) "liking the very in-depth explanations there" ([source](https://news.ycombinator.com/item?id=49311576))
- Good for explaining LLMs to others (2 comments): "This looks great for explaining transformer!!" ([source](https://news.ycombinator.com/item?id=46464642)) "to refresh and explain llm's to friends" ([source](https://news.ycombinator.com/item?id=49311532))

## Alternatives hackers recommend

- [ciechanow.ski](https://hackerapproved.com/p/ciechanow-ski.md): 33 recommend
- [Size of Life](https://hackerapproved.com/p/size-of-life.md): 30 recommend
- [PGSimCity](https://hackerapproved.com/p/pgsimcity.md): 27 recommend
- [Ithihāsas](https://hackerapproved.com/p/ithih-sas.md): 18 recommend
- [Now I Get It](https://hackerapproved.com/p/now-i-get-it.md): 17 recommend

## Cite as

Hacker Approved, "Transformer Explainer", https://hackerapproved.com/p/transformer-explainer/ (counts from 1,795,640 Hacker News comments, November 2025 to November 2026).