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Token Counter

Real-time tokenizer for GPT, Claude, Llama, and Gemini. Analyze token counts, estimate costs, and visualize context window limits.

Context: 200,000 tokens$0.015 / 1k
Tokens0
Characters / Words0 / 0
Est. Cost (Prompt)$0.0000
Context Window Usage0.00% (0 / 200,000)
Token Heatmap
Visualized tokens will appear here...

The Ultimate Online Token Counter & Visualizer

When building applications with Large Language Models (LLMs), understanding how your text is processed is critical. That is exactly where our token counter steps in. Whether you are an AI researcher, a prompt engineer, or an everyday user, you need a reliable online token counter to ensure your prompts fit within strict context windows and budgets. We built the best free token counter available today to solve this exact problem.

By using our tool, you can effortlessly count tokens in prompt inputs before you ever send an API request. This prevents unexpected errors and helps you optimize your workflows. Because it provides a real time token count, you receive instantaneous feedback as you type or paste your documents. And the best part? It is a token counter without login required—you get an unlimited token counter free of charge, right in your browser.

Comprehensive LLM Token Counter Support

Different AI models tokenize text differently. A single word might be one token in one model, but split into three tokens in another. That's why a universal llm token counter is essential. Our platform is designed to be a definitive ai token counter supporting the industry's most popular models.

  • OpenAI Token Counter: Whether you're working with GPT-4, GPT-4o, or the newest GPT-5.5 series, our token counter openai ensures you have pixel-perfect accuracy for your ChatGPT prompts.
  • Claude Token Counter: Anthropic's Claude models have unique tokenization quirks. Our tool calculates exactly how Claude 3.5 Sonnet and Claude 4.8 Opus interpret your text.
  • Gemini Token Counter: Google's Gemini models have massive context windows up to 2 million tokens. Use our platform to accurately measure large document uploads.

Beyond just counting numbers, this application functions as an advanced token visulizer. It provides a heatmap representation of exactly how the tokenizer splits your words. This deep level of insight is invaluable for debugging strange LLM behaviors where a word might be chopped in an unexpected way.

Free Token Cost Estimator & Calculator

Tokens equal money. Every time you send a request to a commercial API, you are billed by the token. Our platform serves as a powerful token cost calculator, instantly converting your token counts into real-world dollar amounts based on the latest 2026 pricing tiers.

With our free token cost estimator, you can compare the llm token cost across different providers instantly. Simply select your desired model from the dropdown menu, and the estimated cost for your prompt is dynamically updated. This allows developers to make cost-effective decisions about whether to route a specific prompt to a heavy-duty reasoning model or a faster, cheaper alternative.

Privacy First: Process Locally

We understand that you may be pasting sensitive code, proprietary business data, or private conversations into this tool. Because our system is a token counter without login, we do not save, store, or transmit your text to any external servers for tokenization. The counting logic runs entirely client-side in your local browser, making it the most secure online token counter you can use.

Bookmark this page and make it a permanent part of your AI development stack. Whether you need a dedicated openai token counter, a robust claude token counter, or an intuitive token visulizer, our platform offers the speed, accuracy, and privacy you demand.

Frequently Asked Questions

What is an LLM token and why do I need an online token counter?

A token is a piece of a word (often 3-4 characters) that Large Language Models use to read text. Counting them is crucial because models have strict context limits and charge per token. A dedicated online token counter prevents API errors and helps you manage your llm token cost before running prompts.

How does this free token cost estimator calculate prices?

Our free token cost estimator multiplies your exact token count by the current 2026 API pricing tiers for the model you select. This acts as a reliable token cost calculator giving you immediate financial estimates for both frontier and workhorse models.

Is this an unlimited token counter free of charge?

Yes. This platform is an entirely unlimited token counter free to use. There are no daily limits, paywalls, or hidden fees. We built the best free token counter to empower developers globally.

Is it safe to count tokens in a prompt here?

Absolutely. Your privacy is paramount. This is a token counter without login that processes your text 100% locally in your browser. When you count tokens in prompt inputs, no data is sent to our servers.

How is the OpenAI token counter different from the Claude token counter?

Models use distinct tokenization libraries. An openai token counter (like for GPT-5.5) uses the `cl100k_base` or `o200k_base` encoding, while a claude token counter uses Anthropic's proprietary logic. The same paragraph may yield slightly different token totals depending on the model.

Can I use this as a Gemini token counter for large documents?

Yes, you can upload massive documents directly into our gemini token counter. Google's Gemini models support massive 1M-2M token context windows, and our visualizer comfortably handles large text parsing.

What exactly does the token visualizer heatmap show?

Our token visulizer breaks your text down and assigns alternating background colors to individual tokens. This heatmap reveals exactly where words are split, offering deep insight for debugging code blocks or non-English text formatting.

How accurate is the real time token count?

It is exceptionally precise. Because tokenization is performed in your browser as you type without waiting for a server response, the real time token count gives you instant, zero-debounce accuracy.

Do I need an account to use this ai token counter?

No account or API key is ever required. It is an entirely frictionless ai token counter ready to use instantly from any device.

Why are token costs different between GPT-5.5 and Claude 4.8?

AI providers price their models based on the compute required. A massive flagship reasoning model costs more per 1k tokens than a smaller "flash" or "instant" model. Our llm token counter updates your estimated bill instantly when you switch models, ensuring you never overpay.