Prompt
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Density heatmap
longer words · CJK · code
Paste a prompt to color tokens by density.
sparse
dense (CJK / long / code)
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Chars
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Words
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Tokens (GPT)
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Tokens / word
Token counts
Estimated USD cost
Prices as of Aug 2026. Public list prices per 1M tokens. GPT uses o200k_base; Claude/Gemini are estimates.
100% client-side. Your prompt is never POSTed. Tokenizer loads from jsDelivr; GoatCounter only records a page view.