AI Token Counter for ChatGPT, Claude and GPT-4
Calculate the exact number of tokens in your text for ChatGPT, Claude, GPT-4 and other AI models. Tokens are the units that models use to process text and determine API costs.
Token Counter Tool
What are tokens?
Tokens are fragments of text that language models use to process information. A token can be a complete word, part of a word, or even a special character. On average, 1 token is approximately 4 characters or 0.75 words in English.
Why count tokens?
- Optimize API costs: OpenAI, Anthropic and other providers charge per token used (input and output).
- Verify limits: Make sure your prompts don't exceed the model's limit (e.g., 4K, 8K, 128K tokens).
- Plan conversations: Manage available context in long conversations.
- Estimate costs: Calculate how much a request will cost before sending it.
🔒 Your privacy is guaranteed
Token counting is done entirely in your browser using local tokenization libraries. Your text is never sent to any external server. All processing is local and private.
Compatible Models
This token counter uses the official GPT tokenizer (tiktoken), which is compatible with:
- OpenAI: ChatGPT (GPT-3.5, GPT-4, GPT-4 Turbo, GPT-4o)
- Anthropic: Claude 2, Claude 3 (Opus, Sonnet, Haiku), Claude 3.5
- Other models: Most transformer-based models use similar tokenization
The tiktoken tokenizer is the industry standard and provides accurate results for calculating costs and managing context limits.
Usage Examples
Example 1 - Short text:
"Hello world" ≈ 2 tokens
Example 2 - Typical paragraph:
A 100-word paragraph ≈ 130-150 tokens
Example 3 - Page of text:
A 500-word page ≈ 650-750 tokens
Tip: For non-English text, the number of tokens is usually slightly higher than equivalent English text due to how tokenization works.
Frequently Asked Questions
What is a token in AI?
A token is a unit of text that AI models like ChatGPT, Claude and GPT-4 use to process language. Tokens can be whole words, parts of words, or punctuation marks. Most English words are 1-2 tokens.
How many tokens is 1000 words?
Approximately 1000 words equals about 1300-1500 tokens in English. The exact number varies depending on word length and complexity. Use our counter above for precise calculations.
How can I reduce token count in my prompts?
To reduce tokens: use shorter words, remove unnecessary punctuation, avoid repetition, and be concise. Every token counts toward API costs and context limits.
Is this token counter accurate for ChatGPT and GPT-4?
Yes! Our token counter uses the official GPT tokenizer library (tiktoken), which is the same tokenization used by OpenAI's ChatGPT, GPT-4, GPT-3.5 and other models. Results are exact.
Does the counter work offline?
Yes, once the page loads, the counter works completely offline. All processing happens in your browser - no internet connection needed after initial load.
How much does it cost to use OpenAI's API?
OpenAI charges per input and output tokens. For example, GPT-4 Turbo costs approximately $0.01 per 1000 input tokens. Use this counter to estimate your costs before making requests.