Token Counter - Count Tokens for AI Models
Free Token Counting Tool for GPT, Claude, Gemini
Count tokens and estimate costs for AI models with support for multiple tokenizers
Quick Examples
What is Token Counting?
Token counting is essential for working with AI language models like OpenAI GPT-4, Claude, and Google Gemini. Tokens are the basic units that AI models use to process text, representing words, parts of words, or characters. Understanding token usage helps optimize your prompts and manage API costs effectively.
Different AI models use different tokenization methods. For example, GPT models use tiktoken encoding, while Claude uses a different approach. Our token counter supports all major AI models and provides accurate token counts with real-time cost estimation for API usage.
Why Token Counting Matters
Cost Management
AI APIs charge based on token usage. By counting tokens before making requests, you can estimate costs and optimize your budget for AI model usage.
Context Limits
Each AI model has a maximum context window. Knowing your token count ensures your prompts fit within model limits and prevent truncation.
Performance Optimization
Shorter prompts generally process faster and cost less. Token counting helps you find the optimal balance between detail and efficiency.
Multi-Model Comparison
Compare costs across different AI models for the same text. Our tool shows price differences to help you choose the most cost-effective option.
Supported AI Models
Our token counter supports all major AI language models with accurate tokenization and pricing:
OpenAI Models
- • GPT-4 Turbo
- • GPT-4
- • GPT-3.5 Turbo
Google Models
- • Gemini 2.5 Pro
- • Gemini 2.5 Flash
- • Gemini 1.5 Pro/Flash
Anthropic Models
- • Claude 3 Opus
- • Claude 3 Sonnet
- • Claude 3 Haiku
How to Use the Token Counter
- Paste or type your text in the input area above
- Select the AI model you plan to use from the dropdown menu
- Click "Count Tokens" to get detailed analysis
- Review token count, cost estimation, and model comparisons
- Use the insights to optimize your prompts and manage costs
The tool provides real-time character, word, and line counts as you type, making it easy to track your content length. Cost comparisons help you choose the most economical AI model for your needs.