How accurate is the token estimate?

It uses a rough estimate of 1.3 tokens per word for English text. Actual token counts vary by model tokenizer.

What pricing is used?

GPT-4o: $2.50/M input tokens, Claude Sonnet: $3.00/M input tokens, Gemini Flash: $0.10/M input tokens. Prices are approximate and may change.

Does it count output tokens?

No. It estimates the token count for the input text only. Output token pricing is usually different.

Why do different models have different costs?

Each AI company sets its own pricing based on model capability, compute costs, and market strategy.

AI Token Counter

AI-Era Tools

Estimate token count and API costs for GPT-4o, Claude Sonnet, and Gemini Flash.

100% client-side processing

100% client-side — your text never leaves your browser

Input

0 characters|0 words|0 lines

Token Estimates

Words

Estimated Tokens

$0.000000

GPT-4o ($2.50/M input tokens)

$0.000000

Claude Sonnet ($3.00/M input tokens)

$0.000000

Gemini Flash ($0.10/M input tokens)

0 characters|0 words|0 lines

How to Use AI Token Counter Online

Paste your data into the input field above
The result appears instantly in the output area
Click "Copy" to copy the result to your clipboard

Estimate token count and API costs for GPT-4o, Claude Sonnet, and Gemini Flash.. Runs 100% client-side — no data is sent to any server.

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