AI Token Counter
Estimate token counts for text by AI model.
* These are estimates and may differ from actual token counts. Exact counts depend on the model's tokenizer.
How to Use AI Token Counter
Enter text in the text area and token counts will be estimated in real-time along with character count, word count, and line count. Select from GPT-4, GPT-3.5, or Claude in the AI model dropdown to see model-specific token estimates. Useful for pre-checking API costs and adjusting prompt lengths. All processing runs in your browser. No data is sent to any server.
Frequently Asked Questions (FAQ)
Q. How accurate is the token count estimation?
A. This tool performs character-based estimation. For English text, approximately 4 characters equal 1 token, while for Japanese text, approximately 1-2 characters equal 1 token. Since exact token counts depend on the model's tokenizer, please use these as rough estimates.
Q. Which AI models are supported?
A. GPT-4, GPT-3.5, and Claude (Anthropic) are supported. Estimation coefficients based on each model's tokenizer characteristics are used.