LLM Visualizer: An Interactive Tool for Building a Transformer from Scratch
evo_9 · hn · 2026-09-11
Developer Jay Visaria released LLM Visualizer, a web-based dashboard for understanding Transformers from the ground up.
- Visualizes each stage — tokenization, embeddings, attention, forward passes — with intermediate states exposed in an interactive UI
- Useful both for learning Transformer internals and as a teaching demo
- Code is open-sourced on GitHub (jayvisaria/LLM-Visualizer) and runs in the browser
A more intuitive way to grasp LLM internals than reading the papers alone.
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