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.

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

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

AI-Era Tools

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

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

Input

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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

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The estimated token count is displayed along with cost estimates for popular models.
Use this to budget API costs before making calls.