ABOUT FREE TOKEN COUNTER

Know what a prompt costs before you send it.

Free Token Counter turns AI prompts into clear numbers — tokens, request cost, monthly spend, and context-window fit — for 671+ models, entirely in your browser with nothing uploaded.

Why it exists

Every call to an AI model is billed in tokens, and prompts that overflow a context window get silently truncated. Yet the usual ways to check token counts either reveal the number only after you have already paid for the request, or require pasting sensitive text into a third-party box. Free Token Counter was built to give an instant, honest, private answer first: paste a prompt, pick a model, and see exactly what it will cost and whether it fits — before a single billable request.

What we have built

671+ model counters spanning OpenAI, Anthropic Claude, Google Gemini, DeepSeek, Mistral, xAI Grok, Meta Llama, Alibaba Qwen, and many more.

Exact in-browser tokenizers for the OpenAI, Llama 3, Qwen, and DeepSeek families — not just rough estimates — with every other provider clearly labeled as an estimate.

A full toolkit: cost analyzer, model comparison, tokenizer visualizer, image-token and prompt-caching calculators, a chat/conversation counter, context-window tables, and word/token converters.

Always-current pricing: the curated catalog is verified daily against official provider pages, published as a free pricing API and a price-change tracker.

A browser extension that counts any selected text on the page, on-device.

Our principles

Privacy first. Counting runs in your browser. Prompt text is never uploaded to a server — there is no server to upload it to.

Honest accuracy. We label what is exact versus estimated, and never claim a count we cannot back up. For billing-exact Claude and Gemini numbers, we offer a bring-your-own-key option that talks to the provider directly.

Free and open. No accounts, no paywalls, no signup. The pricing data is free to reuse with attribution.

Who it is for

Prompt engineers checking prompt size before production, developers budgeting OpenAI, Anthropic, or Google API spend, writers and researchers checking whether a document fits a context window, and product and finance teams modeling high-volume costs. Free Token Counter is independent and is not affiliated with any AI provider; provider names are used only to identify the tokenizers and pricing being estimated.

Have a correction or request? Reach us on the contact page.