Tokenizer Playground
See how AI reads your text
Runs 100% in your browser using the GPT tokenizer. Nothing is sent to any server.
33
Tokens
149
Chars
27
Words
4.52
Chars/tok
cl100k_base (GPT-4 / GPT-4o family)
Hello,·world!·Innovation·AI·Lab·tokenizes·text·so·language·models·can·read·it.⏎⏎Each·chunk·below·is·one·token·—·the·atomic·unit·an·LLM·actually·sees.
Rule of thumb: ~4 characters per token in English. Prices are usually per 1M tokens.