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Yunedia Tools

LLM-Token-Zähler

Zählen Sie Tokens mit dem echten BPE-Tokenizer für OpenAI-Modelle (exakt), plus klar gekennzeichnete Schätzungen für Claude, Gemini und andere Modelle.

Enter some text to see the count.

So funktioniert es

  1. Paste the text you want to count.
  2. Pick a model. GPT-4o family and GPT-4/3.5 are counted exactly with the real tokenizer.
  3. Claude, Gemini, Llama and Mistral show an estimate, always labeled as one, with the heuristic stated.

Hinweise

Exact counts run entirely in your browser with gpt-tokenizer (o200k_base / cl100k_base); your text is never sent to a server. Other providers do not publish a browser tokenizer, so this page offers only a character-based estimate for them and never presents it as exact.

Häufige Fragen

How far off can the estimates be?
For English prose, often within 10–20%, but code, long numbers and CJK text can be far off. Keep a margin when budgeting from an estimate.
Why does Japanese cost more tokens?
BPE tokenizers are trained mostly on English, so a Japanese character typically becomes about one token (sometimes more). You can verify this with the exact GPT counters on this page.