ZeroGPT
Free + Paid
Simple free checker that estimates how much of a text was written by AI.
AI Detectors & PlagiarismVisit
GPTZero
Checks whether text was likely written by AI, with sentence-level highlights.
What is GPTZero?
GPTZero estimates how likely it is that a piece of text was written by an AI model. It highlights sentences, gives an overall result and offers writing reports for teachers. It runs on the web, with a Chrome extension, LMS integrations and an API.
Best for: Teachers and editors who want a second opinion on whether text is AI-written.
What you can do with GPTZero
Check a student essay for AI writing
Review submitted articles before publishing
Scan many documents with the API
Key features
- AI-written text detection
- Sentence-level highlights
- Writing process reports for teachers
- Chrome extension and API
GPTZero pros and cons
Pros
- Clear, easy-to-read results
- Built for education
- Free plan for occasional checks
Cons
- No detector is fully accurate; treat results as a signal
- Free plan has word limits
GPTZero pricing
Free + Paid
GPTZero has a free plan, with paid plans that add more usage or features. Plans change often, so check the official site for current prices.
How to get started
- Open gptzero.me and create a free account.
- Try one real task first: check a student essay for AI writing.
- Compare the result with ZeroGPT or Copyleaks, then keep the one that fits how you work.
Compare GPTZero
Side-by-side comparisons of features, pricing, pros and cons.
GPTZero alternatives
Other tools that do a similar job, ranked by our editors.
Copyleaks
Free + PaidAI content detector and plagiarism checker for schools and businesses.
AI Detectors & PlagiarismVisitTurnitin
PaidAcademic integrity platform for plagiarism checks and AI writing detection.
AI Detectors & PlagiarismVisitPangram
Free + PaidAI text detector built to tell human writing from AI with low false positives.
AI Detectors & PlagiarismVisitWinston AI
Free trialDetects AI-written text and AI images, with plagiarism checks and readable reports.
AI Detectors & PlagiarismVisitScribbr AI Detector
Free + PaidStudent-friendly AI detector from the academic writing site Scribbr.
AI Detectors & PlagiarismVisit
Top AI content detectors
How GPTZero compares with the best in AI Detectors & Plagiarism.
1. GPTZero
Free + PaidChecks whether text was likely written by AI, with sentence-level highlights.
AI detection, plagiarism checking and fact checking for publishers and writers.
3. Copyleaks
Free + PaidAI content detector and plagiarism checker for schools and businesses.
4. Turnitin
PaidAcademic integrity platform for plagiarism checks and AI writing detection.
5. Hive AI Detector
Free + PaidDetects AI-generated images, video, audio and text using Hive's models.
GPTZero FAQ
What is GPTZero?
GPTZero estimates how likely it is that a piece of text was written by an AI model. It highlights sentences, gives an overall result and offers writing reports for teachers. It runs on the web, with a Chrome extension, LMS integrations and an API.
Is GPTZero free?
GPTZero has a free plan, with paid plans that add more usage or features. Check the official site for current limits and prices.
What can you do with GPTZero?
With GPTZero you can check a student essay for AI writing; review submitted articles before publishing; scan many documents with the API.
Who is GPTZero best for?
Teachers and editors who want a second opinion on whether text is AI-written.
Does GPTZero have an app?
GPTZero runs as web app, chrome extension and api; we know of no dedicated phone or desktop app.
Who makes GPTZero?
GPTZero is made by GPTZero.
What are the best alternatives to GPTZero?
Popular alternatives include ZeroGPT, Copyleaks, Turnitin and Pangram. See the full ranking on our AI Detectors & Plagiarism page.
AltFTool is not affiliated with GPTZero. This summary was written by our editors from the tool's public information. Browse all 451 AI tools