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Home/Developers/AI Token Counter

AI prompt token counter

Estimate how many tokens a prompt will use before sending it to an AI model, based on the common ~4-characters-per-token rule of thumb.

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Why use this tool

  • PrivateRuns on your device — nothing is uploaded
  • FastWorks instantly, no waiting in a queue
  • FreeNo signup, no watermark, no limits
  • Any devicePhone, tablet or computer

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Frequently asked questions

Is this exact?

No. Different AI providers use different tokenizers, so this gives a close approximation, not an exact count.

Why does token count matter?

Most AI APIs charge and limit usage by token count, so estimating ahead helps you stay within context limits and budget.

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