AI detector
GPTZero
Popular AI writing detector with a free plan and Writing Replay.
The best value AI detector, with a useful free plan.
Where it appears
Budget pickThe Best AI DetectorWhat’s good
- False positive rate below 1% in 2025 research
- Free plan with 10,000 words/month
- Low price
What to know
- Prices load only in a browser
- Older versions had many false positives
Key features
- 150,000 words/month on Essential
- Plagiarism checks
- Chrome extension
- Authorship and Writing Replay
Works with
Where this comes from
01GPTZero pricing
02GPTZero pricing tracker