kitio.aiGPTZero vs Decopy AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. GPTZero starts at See pricing page and Decopy AI starts at $9.99/mo. Check both pricing pages for current plans.
At 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
- AI content detector
- AI text humanizer
- YouTube summarizer
- Video transcripts
- Speech to text
- Text to speech
| Feature | GPTZero | Decopy AI |
|---|---|---|
| Best for | AI detector that flags machine-written text for teachers and editors | AI detector, humanizer, summarizer and transcript tools in one site |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $9.99/mo |
| Free plan | Yes | Yes |
| Made by | GPTZero | Decopy AI |
| 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 Decopy AI starts at $9.99/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- 10 quotas per month
- 10 credits
- Limited basic features
Lite
$9.99/mo
- 1,200 quotas per month
- 800 credits
- Batch YouTube transcription
Basic
$19.99/mo
- 3,000 quotas per month
- 2,000 credits
Premium
$29.99/mo
- Unlimited basic features
- 5,000 credits
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
Decopy AI
- Many writing and study tools in one place
- Free plan to try
- Cheaper with yearly billing
- Free plan has only 10 quotas a month
- Two-tier quota and credit system is confusing
- Detector results are not definitive
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 Decopy AI if you want:
- Many writing and study tools in one place
- Free plan to try
- Cheaper with yearly billing
Watch out: free plan has only 10 quotas a month.
GPTZero vs Decopy AI FAQ
What is the difference between GPTZero and Decopy AI?
GPTZero: AI detector that flags machine-written text for teachers and editors. Decopy AI: AI detector, humanizer, summarizer and transcript tools in one site. Both are writing tools.
Is GPTZero or Decopy AI cheaper?
GPTZero starts at See pricing page and Decopy AI starts at $9.99/mo. Check both pricing pages for current plans.
Do GPTZero and Decopy AI have free plans?
GPTZero: Yes. Decopy AI: Yes.
Who makes GPTZero?
GPTZero is made by GPTZero, based in United States.
Who makes Decopy AI?
Decopy AI is made by Decopy AI.
Which should I choose, GPTZero or Decopy AI?
Choose GPTZero if you value free tier for regular checks and writing replay shows the drafting process. Choose Decopy AI if you value many writing and study tools in one place and free plan to try.