Token Counter

Paste text (or upload a file) to count tokens and see exactly what it costs to send to GPT, Claude, Gemini, DeepSeek and 550+ other models — using a real BPE tokenizer (o200k_base), not a word-count estimate. Everything runs in your browser; nothing is uploaded.

Cost of this text across popular models

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What is a token?

LLM APIs don't bill by word or character — they bill by token, the unit the model actually reads. A token is a common chunk of text: whole short words ("the", "and"), pieces of longer words ("token" + "izer"), punctuation, or whitespace. In English, one token averages about 4 characters or ¾ of a word, but the exact split depends on the tokenizer — which is why a real BPE count beats any rule of thumb.

This tool runs o200k_base, the byte-pair-encoding scheme used by OpenAI's current models, directly in your browser. Your text never leaves the page.

FAQ

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Token counters by model

Every priced model gets its own token counter, pre-filled with its price — jump straight to one instead of picking it from the list above.