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LLM Visualizer
A browser-side LLM visualizer that simulates tokenization, embeddings, self-attention, next-token sampling, temperature, top-p, and KV cache.
LLM Visualizer
LLM visualizer
From tokens to next-token generation
This teaching lab uses only browser-side simulation data so you can inspect tokenization, embeddings, self-attention, sampling, and KV cache without loading a real model.
Input
Choose an example or type a short prompt
For explainability, v1 keeps the first 16 tokens and uses deterministic teaching weights.
Mechanism walkthrough
Watch one LLM forward pass like a debugger
Step through the LLM pipeline and the matching panel will open automatically.
