AI Tools
Prompt Token Estimator
A quick sanity check before shipping a prompt into production — how many tokens it actually costs, and how much context-window headroom it leaves.
FreeNo sign-upRuns in your browser
Model
How it works
- 1Paste your draft prompt
- 2Pick a target model
- 3See token count, input cost and context usage
Who this is for
- Checking a system prompt isn't eating your context budget
- Estimating cost before a batch job
- Comparing prompt length across draft revisions
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