Originality.AI
The detector to pick if you are a publisher or agency policing freelance output at volume, because the team history and writing replay matter more than the raw score. A free Basic tier (three AI-only scans a day, 2,000 words each) now lets you test it before paying. Do not use it to accuse a student; no detector is accurate enough to carry that weight.
Pros
- Credit model is legible: 100 words per credit, no hidden weighting
- API on the higher tier makes batch pipelines possible
- Chrome extension works inside Google Docs, where the writing actually happens
- Writing replay from revision history is process evidence, not just a score
- Free Basic tier allows three AI-only scans a day with file upload, no subscription needed
Cons
- Monthly subscription credits expire, so a light month is wasted spend
- The jump from $14.95 to $179 a month is a steep single step
- False positives on heavily edited or non-native English writing are a documented hazard across every detector
- Accuracy benchmarks are largely vendor-run