Developer Tools
AI Text Tokenizer
Analyze and visualize how AI models see your text. Count tokens, estimate costs, and optimize your prompts for OpenAI models.
Input Text
Pricing Guide
GPT-4
$0.03/1K Tokens (In)
GPT-4 Turbo
$0.01/1K Tokens (In)
GPT-3.5 Turbo
$0.0005/1K Tokens (In)
Why Tokenize?
AI models don't read words—they read tokens. One token is roughly 4 characters or 0.75 words in English. Precise counting helps you optimize prompt engineering and control API billing.