AI Token Counter

Estimate token count and API cost for GPT-4, Claude, Gemini, and Llama models with live counting.

🤖 AI Token Counter

Estimate token count and cost for GPT-4, Claude, and other AI models

OpenAI GPT-4o — ~4 chars/token, 128K context

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What is an AI Token Counter?

An AI token counter is a tool that estimates how many tokens a piece of text will consume when sent to large language model APIs like OpenAI's GPT-4, Anthropic's Claude, or Google's Gemini. Tokens are the fundamental billing unit for AI APIs: each API call is priced per token, and understanding token usage is essential for cost optimization and staying within context window limits.

CodeHelper's AI Token Counter provides instant token estimates for all major models, calculates API costs for both input and output, and shows context window usage as a visual progress bar.

Key Features

  • Multi-Model Support: Estimates for GPT-4o, GPT-4 Turbo, GPT-3.5, Claude Opus/Sonnet/Haiku, Gemini 1.5 Pro, and Llama 3.
  • Cost Estimation: See the estimated API cost for both input (prompt) and output (completion) pricing.
  • Context Window: Visual progress bar showing what percentage of the model's context window your text uses.
  • Live Counting: Token count updates as you type for real-time feedback.
  • Text Statistics: Word count, character count, and line count alongside token estimates.

How to use the AI Token Counter

  1. Select the AI model you are using.
  2. Paste your prompt, system message, or any text.
  3. View the estimated token count, cost, and context window usage instantly.

Whether you are optimizing prompts for cost, checking context window limits, or estimating API budgets, this free token counter helps you manage AI API usage effectively.