Interactive demo
Tokenizer Playground
Real models use byte-pair encoding; this simplified demo splits words into small pieces so you can feel why token counts drive cost and context limits. Type anything and watch the pieces.
Type anything — see how AI sees it:
Simplified demo splitter (real models use BPE — same idea, smarter pieces).
ChatGPTspaceisspacegreatspaceatspaceRAG!
💡 11 simplified tokens ≈ billed & limited. That’s why chunking matters. Learn →
Embed this demo
Paste into any site or lesson. Uses clean mode (no nav).
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