What is GPTZero?
GPTZero detects text generated by ChatGPT, Claude, Gemini and other models, highlighting AI-likely sentences. It is widely used by teachers and includes writing-process replay, plagiarism checks and an API.
Best for: Teachers, Editors.
Key features
- Sentence-level AI highlighting
- Writing replay (Docs)
- Plagiarism scan
- Batch file scanning
- API
Pros and cons
Pros
- Widely trusted in education
- Clear, explainable results
- Free tier available
Cons
- No detector is fully reliable
- Can flag heavily edited human text
GPTZero pricing
| Pricing model | Free plan |
|---|---|
| Starting price | Free |
| Platforms | Web, Chrome, API |
| Launched | 2023 |
Prices change often. Check the GPTZero website for current plans.
Our verdict
GPTZero scores 8.6/10 in our review. Its biggest strength: widely trusted in education. The main drawback: no detector is fully reliable. If it isn't the right fit, ChatGPT is the closest alternative.
GPTZero compared
Frequently asked questions
What is GPTZero?
GPTZero detects text generated by ChatGPT, Claude, Gemini and other models, highlighting AI-likely sentences. It is widely used by teachers and includes writing-process replay, plagiarism checks and an API.
Is GPTZero free?
GPTZero has a free plan with limits.
What are the best GPTZero alternatives?
Popular alternatives include ChatGPT, Grammarly, Notion, Google Translate.
Who is GPTZero best for?
GPTZero is best for teachers, editors.