Watch a language model
actually think.
llamers is a complete, from-scratch transformer — tokenizer, attention, RoPE, KV cache, sampling, even training — running live in pure JavaScript. No mocks, no magic. Open the hood and watch every token take shape.
See the attention
Per-head heatmaps update as each token is generated.
Watch the cache grow
The KV cache fills one position at a time — exactly as in real runtimes.
Train it yourself
Real backpropagation in the browser. Watch the loss fall, then generate.