AI Token Counter
Calculate tokens and estimate API costs for GPT-4, Claude 3, Llama, and other AI models before making expensive API calls.
💳 Cost Breakdown
Per 1K tokens📈 Model Pricing Reference
How AI Token Counting Works
Tokens are the fundamental units that AI models use to process text. Understanding token counts is crucial for managing API costs and staying within context limits. This tool provides accurate estimates based on each model's tokenization approach.
What is a Token?
A token can be as short as one character or as long as one word. For English text, 1 token is approximately 4 characters or 0.75 words on average. Special characters, code, and non-English text may tokenize differently.
GPT-4 & GPT-3.5
Uses cl100k_base tokenizer. Approximately 4 characters per token for English text.
Claude 3 Models
Uses custom tokenizer optimized for natural language. Roughly 3.5 characters per token.
Llama & Others
Various tokenizers with similar ratios. Always verify with official tools for production use.
Tips for Reducing Token Usage
Write concise prompts, remove unnecessary whitespace, and use clear instructions. Consider using cheaper models for simple tasks and reserve advanced models like GPT-4 and Claude 3 Opus for complex reasoning.