GPT Calculator API

Use this Free API to calculate token count and cost of your GPT Prompt. Or use the Online Tool.

This is a Free API not intended to be used in production. Please use the official OpenAI pricing rates and tokenizer packages for the most accurate results.

OpenAI Pricing

Example cURL Request


  -H "Content-Type: application/json" 

  -d '{ 

    "promptText": "my prompt text", 

    "model": "gpt-4" 


Example Response


  "tokenNum": 3, 

  "rate": 0.03