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Count Tokens with tiktoken: Characters Are Not Tokens, Chunking by Tokens and Context Budgets

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Self-Hosting & Infra intermediate 6 min read $0.01 Updated 2026-10-20

Measured with tiktoken cl100k_base: token counts for English, punctuation, digits, accented text, emoji, indentation and German; encode/decode round trips; slicing 3,001 tokens into 1,000-token chunks; and why other models need their own tokenizer.

Estimate LLM costs and avoid context overflow with real token counts. See how words, numbers, accents, emoji and Japanese tokenize, split text on token boundaries, and budget a prompt.

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