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GPTZero vs Illuminarty

GPTZero: Checks whether text was likely written by AI, with sentence-level highlights. Illuminarty: Checks images and text for signs of AI generation and suggests the likely model. Here is how they compare on features, pricing, platforms, pros and cons.

Quick verdict

GPTZero

Best for: Teachers and editors who want a second opinion on whether text is AI-written.

Stands out for: Clear, easy-to-read results; Built for education.

Illuminarty

Best for: Curious users and journalists checking whether an image is AI-made.

Stands out for: Handles images and text; Free tier.

Side-by-side comparison

Comparison of GPTZero, Illuminarty
GPTZero
Visit gptzero.me (opens in a new tab)
Illuminarty
Visit illuminarty.ai (opens in a new tab)
What it isChecks whether text was likely written by AI, with sentence-level highlights.Checks images and text for signs of AI generation and suggests the likely model.
Pricing
Free + Paid
Free + Paid
Free to useYesYes
CategoryAI Detectors & PlagiarismAI Detectors & Plagiarism
Editor rank#1 in category#13 in category
Made byGPTZeroIlluminarty
Best forTeachers and editors who want a second opinion on whether text is AI-written.Curious users and journalists checking whether an image is AI-made.
Key features
  • AI-written text detection
  • Sentence-level highlights
  • Writing process reports for teachers
  • Chrome extension and API
  • AI image detection
  • AI text detection
  • Highlights suspect regions
  • Chrome extension
Pros
  • Clear, easy-to-read results
  • Built for education
  • Free plan for occasional checks
  • Handles images and text
  • Free tier
  • Visual region highlights
Cons
  • No detector is fully accurate; treat results as a signal
  • Free plan has word limits
  • Accuracy varies with newer models
  • Advanced features are paid
Use it to
  • Check a student essay for AI writing
  • Review submitted articles before publishing
  • Scan many documents with the API
  • Check a social media image for AI generation
  • Test text for AI writing
  • Spot edited regions in a picture
Web app
Chrome extension
API

GPTZero vs Illuminarty: questions

Is GPTZero better than Illuminarty?

Neither wins for everyone. Our editors rank GPTZero slightly higher overall in AI Detectors & Plagiarism, but Illuminarty can be the better fit: Curious users and journalists checking whether an image is AI-made.

Which is free, GPTZero or Illuminarty?

Both can be used without paying: GPTZero is free + paid and Illuminarty is free + paid. Paid plans add more usage or features.

Can I use GPTZero and Illuminarty together?

Yes. Many people keep both and pick per task, for example check a student essay for AI writing with GPTZero, and check a social media image for AI generation with Illuminarty.

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