AI Token Counter

Count tokens for GPT-4, Claude, and Llama models. Estimate API costs before sending requests.

How tokenization works: LLMs split text into tokens — roughly 1 token ≈ 4 characters or ¾ of a word in English. Common words are often a single token; rare words, punctuation, and non-English text may use more.

⚠ Claude and Llama counts use the cl100k_base tokenizer as an approximation. Actual token counts may differ by ±5–15%. Pricing shown is approximate and may not reflect current provider rates.