Token Counter
Estimate prompt tokens, text size, context window usage, and custom AI token costs locally in your browser.
Token counter workspace
Estimate prompt size, context usage, and optional model cost.
Prompt text
Cost estimate
Context window
About 127,960 tokens remain out of 128,000.
This is an estimate. Exact token counts depend on the model and its tokenizer.
Output
Questions
Is the token count exact?
No. This tool gives a local estimate because exact token counts depend on the model and tokenizer.
What context sizes are supported?
You can compare the estimate against common context windows from 8K through 1M tokens.
Can this estimate AI request cost?
Yes. Enter your own input and output prices per million tokens to calculate a local custom cost estimate.
Does Utilumo upload my input?
No. This tool is designed for local browser processing and does not send your input to a server.
Do I need an account?
No. Utilumo tools are built to work without accounts or sign-in.