LLM Token Counter
Estimate LLM token counts in real time. GPT-4/Claude/Gemini with API cost approximation.
Data is never sent to the server. Everything runs locally in your browser. Safe for sensitive information.
▶About this tool
Estimate the token count of your text for GPT-4, Claude, and Gemini in real time. See approximate API costs per model.
How many tokens will this prompt cost? Paste your text to get instant estimates for GPT-4, Claude, and Gemini, along with approximate API costs. Perfect for optimizing prompts, checking context window limits, and budgeting API usage.
Tool interface
Characters
0
Words
0
Lines
0
Est. tokens
0
| Model | Est. tokens | Input cost (est.) |
|---|
Token count is a character-based estimate. Actual count depends on the model's tokenizer. Prices are as of 2025.
Usage
- Paste or type text
- See real-time character/word/token counts
- Check per-model API cost estimates
When to use
API cost estimation, prompt optimization, context window checks.
Examples
100 Japanese chars ≈ 50-70 tokens, 100 English words ≈ 130 tokens.
FAQ
How accurate is the estimate?
This uses character-based heuristics. For exact counts, use model-specific tokenizers like tiktoken.
What is a token?
The smallest unit LLMs process. English words are 1-3 tokens; Japanese characters are 1-2 tokens each.