Developer ToolsetTokenizer Visualizer — See How LLMs Split Text Into Tokens
Paste any text and watch GPT-4 (cl100k_base) or GPT-4o/o1 (o200k_base) split it into colored token chips, with live token/char/word stats, per-model API cost, and a side-by-side tokenizer comparison.
Runs entirely in your browser using the real gpt-tokenizer library — nothing is uploaded.
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