Prompt planning tool
See the token shape of an agent request
Paste the instruction you would give an agent. This is a planning estimate, not a billable tokenizer result.
English prose is estimated at about 4 characters per token.
Characters0
Estimated tokens0
Tokens / character0.000
Token-shaped chunks (an illustration, not exact tokenizer output)
Why are these only estimates? Read what a token actually is. Code, punctuation, and languages other than English can break the rule of thumb fast.