What the free tier gives you
No standing free tier reported; credits are bought.
What the paid tier costs
Reported at 16.99 US dollars a month, or 13.99 billed yearly, for 100 credits at 250 words a credit.
What they claim
The vendor states 99.1 percent accuracy and a false positive rate under 0.2 percent. That is their figure on their corpus; independent testers report human text flagged in the mid to high single digits. Neither number can be checked from outside.
Plagiarism check
- Copyleaks
- Reported as credit based, 1 credit per 250 words. Checks the web, academic journals and shared or private data hubs.
- Blurwrite
- Coming soon. The plagiarism check is being built and is not live yet.
What we do differently
- A separate calibration for every language we publish, never one threshold translated across languages.
- The false positive rate is measured on writing by non-native speakers, the half the published detectors get wrong, and it is on the accuracy page.
- A reading carries our confidence rating and a mark on every sentence, and it is never presented as a verdict.
- Where the detector is weaker, on older model generations and on very short text, the accuracy page says so.