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AI Token Counter

Paste your text to count tokens and see estimated costs across popular AI models — all calculations run in your browser.

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How to use AI Token Counter

  1. Paste or type your text into the input area.
  2. View the estimated token count and character count.
  3. See cost estimates for each model listed below.

What is AI Token Counter?

Token counting is essential for managing AI API costs. This tool estimates token counts using a heuristic tokenizer and instantly shows what your text would cost to process across GPT-4o, Claude Sonnet, Gemini Pro, and more.

Understanding token counts helps you optimize prompts, stay within context windows, and budget API spend accurately.

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FAQ

Is this an exact token count?
It's a close estimate based on common tokenization patterns. For exact counts, use the provider's tokenizer.
Does it support different tokenizers?
This uses a general-purpose heuristic. Different models tokenize text slightly differently.

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Author

OH
Omar Hassan"The Number Cruncher"

Engineer & Unit Conversion Specialist

Omar is a mechanical engineer by training and a unit-conversion enthusiast by passion. He has built calibration systems for aerospace and automotive manufacturers and knows firsthand how a single decimal error can cost millions in rework. His mission is to make every conversion instant, accurate, and accessible to everyone, whether they are a student, tradesperson, or practicing engineer, with no advanced degree required.

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