Best AI content detectors
Tools that estimate whether a piece of writing was produced by ChatGPT, Claude, Gemini or another AI model, often bundled with plagiarism checks.
5 apps, ordered by visits from AppBreakup and how often our research lists each one as an alternative. Open any app to see its alternatives.
All AI content detectors
- Alternatives to GPTZero
AI detector that estimates how much of a text was written by ChatGPT, Claude or Gemini.
Free plan + paidWeb, Browser extension - Alternatives to Originality.ai
AI and plagiarism checker for publishers, agencies and content teams.
Free plan + paidWeb, Browser extension - Alternatives to Copyleaks
AI content detector and plagiarism checker for text, code, images and video, with a developer API.
Free plan + paidWeb, Browser extension - Alternatives to ZeroGPT
- Alternatives to Pangram
AI text and image detector that flags machine-written passages and checks for plagiarism.
Free plan + paidWeb, Browser extension
Popular comparisons
Common questions
What are the best AI content detectors?
Based on how often our research lists them as alternatives and visits from AppBreakup, the leading AI content detectors right now are GPTZero, Originality.ai, Copyleaks, ZeroGPT and Pangram.
Are there free AI content detectors?
Yes. GPTZero (free plan + paid), Originality.ai (free plan + paid), Copyleaks (free plan + paid), ZeroGPT (free plan + paid) and Pangram (free plan + paid) have a free option, out of 5 free or freemium apps we track.
Which AI content detectors are open source?
None of the apps in this category is open source.