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I Tokenized 10,000 Real Prompts: The "4 Characters 1 Token" Rule Is Off by More Than 20% on 4 Out of 10 of Them

This story is from 2026-10-14. It is preserved in the archive; the latest stories are on the live feed.

For three months I priced every LLM feature with one number: 4 characters ≈ 1 token . It is everywhere. It is in blog posts, in pricing calculators, in the back of my head when somebody asks "roughly how much will this cost". It feels safe because it is conservative: it rounds up the token count, s…

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  1. 2026-10-14 13:21 · DEV Community — AI
    I Tokenized 10,000 Real Prompts: The "4 Characters 1 Token" Rule Is Off by More Than 20% on 4 Out of 10 of Them

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