AI Token & Cost Calculator
Securely calculate the token count of your system prompts and context payload. Compare LLM API costs instantly across OpenAI, Anthropic, and Google.
Estimated API Cost
Cost to process this exact text volume
Why Count Your AI Tokens?
In the world of Large Language Models (LLMs), you aren't billed per word—you are billed per token. A token is a piece of a word. When interacting with APIs like OpenAI's GPT-4o, Anthropic's Claude 3.5, or Google's Gemini, understanding your token payload is critical for estimating operational costs.
100% Client-Side Privacy
Unlike many AI tools, our Token Calculator is built with absolute privacy in mind. We utilize a WebAssembly (WASM)
compilation of the tiktoken library. This means your proprietary code, sensitive documents, and system prompts
are tokenized directly on your CPU. No data is ever sent to a server.
How Pricing is Calculated
We calculate costs against the modern LLM standard of Price per 1 Million (1M) Tokens. The tool splits the estimate into two groups:
- Input Cost: The cost you pay to feed your prompt/context into the model.
- Output Cost: The estimated cost if the model were to generate this exact volume of text back to you (Output tokens are generally 3x-4x more expensive).
Pro Tip for Prompt Engineering
White space counts! Removing unnecessary line breaks, double spaces, and tabs from your JSON/Code payloads before sending them to an LLM API can save you thousands of tokens over time.