AI Token Counter
Estimate prompt tokens and custom model cost locally in your browser.
Input
About This Tool
Estimate tokens, words, characters, and API cost for AI prompts before sending them to an LLM. It is designed for long-tail, practical searches where users need a fast answer before moving back into their workflow.
Frequently Asked Questions
How accurate is this token counter?
It uses a practical estimate based on text length and word patterns. Exact token counts vary by model tokenizer, but this is useful for planning prompt size and rough API cost.
Does my prompt leave my browser?
No. The estimate runs in your browser and the text is not uploaded to a server.
Can I use my own model prices?
Yes. Enter the input and output price per one million tokens to estimate cost for any provider or model.