Token Calculator
Heuristic estimation (not exact): Chinese ≈ 0.7 tokens/char, English ≈ 4 chars/token. Costs are rough estimates.
FAQ
What is a token?
A token is the smallest unit of text a large language model processes. Roughly 4 English characters or one English word ≈ 1 token; 1–2 Chinese characters ≈ 1 token.
Do all models count tokens the same way?
Not exactly. OpenAI uses the tiktoken tokenizer; other models' tokenizers are not fully public. This tool uses a heuristic formula, so results are approximate.
How can I reduce token usage?
Shorten prompts, remove redundant text and use more concise phrasing to cut token usage and API cost.