kitio.aiGPTZero vs AI Detector Pro
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. GPTZero starts at See pricing page and AI Detector Pro starts at $27.98/mo. Check both pricing pages for current plans.
Find text likely to trigger AI detectors and revise it in an editor
Freemium · $27.98/moAt a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- AI probability score
- Sentence highlighting
- Writing replay in Google Docs
- Plagiarism checker
- API
- Multilingual AI detection
- Highlights likely triggers
- Overused AI phrase finder
- AI Eraser rewriting
- Scan-as-you-type beta
- API access
| Feature | GPTZero | AI Detector Pro |
|---|---|---|
| Best for | AI detector that flags machine-written text for teachers and editors | Find text likely to trigger AI detectors and revise it in an editor |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $27.98/mo |
| Free plan | Yes | Yes |
| Made by | GPTZero | AI Detector Pro |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
GPTZero starts at See pricing page and AI Detector Pro starts at $27.98/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Free
Free
- Free sign-up, no card required
- Try detection and humanizing
Basic
$27.98/mo
- 103 AI scans a month
- Unlimited humanizations
- Scan rollover
Unlimited
$49.98/mo
- Unlimited AI scans
- Humanization rollover
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
GPTZero
- Free tier for regular checks
- Writing replay shows the drafting process
- LMS integrations
- Scores are probabilities, not proof
- Can misjudge non-native English writing
AI Detector Pro
- Explains why text looks AI-written
- Supports seven languages
- Unused scans roll over
- Basic plan capped at 103 scans a month
- Full price is high without a promo code
- Detection results are approximate
Which one should you choose?
Choose GPTZero if you want:
- Free tier for regular checks
- Writing replay shows the drafting process
- LMS integrations
Watch out: scores are probabilities, not proof.
Choose AI Detector Pro if you want:
- Explains why text looks AI-written
- Supports seven languages
- Unused scans roll over
Watch out: basic plan capped at 103 scans a month.
GPTZero vs AI Detector Pro FAQ
What is the difference between GPTZero and AI Detector Pro?
GPTZero: AI detector that flags machine-written text for teachers and editors. AI Detector Pro: Find text likely to trigger AI detectors and revise it in an editor. Both are writing tools.
Is GPTZero or AI Detector Pro cheaper?
GPTZero starts at See pricing page and AI Detector Pro starts at $27.98/mo. Check both pricing pages for current plans.
Do GPTZero and AI Detector Pro have free plans?
GPTZero: Yes. AI Detector Pro: Yes.
Who makes GPTZero?
GPTZero is made by GPTZero, based in United States.
Who makes AI Detector Pro?
AI Detector Pro is made by AI Detector Pro.
Which should I choose, GPTZero or AI Detector Pro?
Choose GPTZero if you value free tier for regular checks and writing replay shows the drafting process. Choose AI Detector Pro if you value explains why text looks ai-written and supports seven languages.