Count AI Tokens Online

Paste text and instantly see estimated token count for GPT-4o, Claude, Gemini, and more. Shows words and characters too.

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How to use

  1. Select the AI model you plan to use.
  2. Paste or type your prompt or text into the box.
  3. Token count, word count, and character count update instantly.

Frequently asked questions

How are AI tokens counted?

This tool estimates tokens using character and word counts calibrated per model. GPT models average ~4 characters per token; Claude models use a slightly different ratio. For exact counts, use the provider API tokenizer.

Why does token count matter?

LLM APIs charge per token. Knowing your prompt size helps you stay within context limits and estimate costs before sending a request.

Which models are supported?

GPT-4o, GPT-4o mini, GPT-4, GPT-3.5 Turbo, Claude Sonnet, Claude Opus, Gemini Pro, and Llama 3. Select a model to apply its tokenization estimate.

Is my text sent to a server?

No. Token counting runs entirely in your browser. Your text never leaves your device.

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