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Is CuToken free to use?
The 3-pass optimizer on this page is free, with no signup. CuToken Pro (a DeepSeek-powered second refinement pass) requires a free account — new accounts get 5 Pro optimizations at no cost, then it's pay-as-you-go. See pricing.
How accurate is the token counting?
Approximate (~3.8-4.0 chars/token). For exact counts, use the Python version with tiktoken or a PHP tiktoken extension. The optimizer works on relative savings, so approximations are consistent.
Can it break my prompt meaning?
Safe mode: never. Balanced/Aggressive: guarded by grammar checks (dangling prepositions, doubled determiners, modal+to, balanced quotes). Confidence score indicates risk. Review output for aggressive mode.
Does it work with non-English prompts?
Optimized for English. non-English is supported only in PRO version
What's the max prompt length?
No hard limit in the optimizer. Practical limit is your model's context window minus completion budget. The web demo caps at ~4000 chars for UX.