AI Token Counter
Count tokens for any AI model. Estimate API costs with custom pricing including cache hits. Runs entirely in your browser.
What is a token in AI?
A token is a unit of text that AI models process. In English, roughly 1 token equals 4 characters or 0.75 words. In CJK languages, 1 token is approximately 1.5-2 characters.
Does this tool work for all AI models?
Yes. This tool uses a universal approximation algorithm that works for all LLM models including GPT, Claude, Gemini, Llama, Mistral, and more. The estimate is typically within 5-10% of exact counts.
How accurate is the token counting?
The counting uses a universal approximation algorithm based on BPE tokenization patterns. It provides close estimates (typically within 5-10%) but may differ slightly from exact API counts due to model-specific tokenization.
How do I estimate API costs?
Expand the Cost Estimation section and enter your API pricing for input, output, and cache hit tokens. The tool will calculate the estimated cost based on the token count and your pricing.
Is my text sent to any server?
No. All token counting is performed locally in your browser. Your text never leaves your device and is not sent to any server.