kitio.aiPrepostseo vs Detecting-AI.com
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Prepostseo has the lower starting price: about $10 a month, against $15 for Detecting-AI.com.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Plagiarism checker
- Paraphrasing tool
- AI content detector
- Grammar checker
- Developer APIs
- AI text detection
- Sentence-level highlights
- Plagiarism checker
- Fact checker
- REST APIs
- MCP server
| Feature | Prepostseo | Detecting-AI.com |
|---|---|---|
| Best for | Free plagiarism checker, paraphraser and AI detector in one site | AI text detector with plagiarism checks and developer APIs |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | $10/mo | $15/mo |
| Free plan | Yes | Yes |
| Made by | Prepostseo | Detecting-AI.com |
| Based in | Pakistan | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
|
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Both offer: Plagiarism checker.
Pricing compared
Prepostseo has the lower starting price: about $10 a month, against $15 for Detecting-AI.com.
Free plan
Cheapest paid plan
Top plan
Free trial
3 plans
Basic
$10/mo
- 5K words per submission
- Plagiarism checker and humanizer
Standard
$20/mo
- 15K words per submission
- Higher query limits
Company
$45/mo
- 25K words per submission
- Highest query limits
6 plans
Free
Free
- Scans up to 15,000 characters
- No signup required
Writer
$6/mo billed yearly
- Unlimited AI detection
- 1M characters per scan
- Plagiarism credits
Pro
$13/mo billed yearly
- Unlimited AI detection
- More plagiarism credits
- Fact checker
Scholar
$20/mo billed yearly
- For long research documents
- Largest plagiarism allowance
AI Detector API
$15/mo
- 100,000 detector words
- REST endpoint and MCP tool
API Bundle
$35/mo
- 100,000 words per API
- Detector, humanizer and plagiarism
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
Prepostseo
- Many free tools without sign-up
- APIs available
- Low-cost premium plans
- Ad-heavy free pages
- Quality below dedicated tools
Detecting-AI.com
- Free scans without an account
- Accepts PDF and DOCX uploads
- API and MCP options for developers
- Free scans limited to 15,000 characters
- Consumer plan prices shown on yearly billing
- Detection scores are probabilistic, not proof
Which one should you choose?
Choose Prepostseo if you want:
- Many free tools without sign-up
- APIs available
- Low-cost premium plans
Watch out: ad-heavy free pages.
Choose Detecting-AI.com if you want:
- Free scans without an account
- Accepts PDF and DOCX uploads
- API and MCP options for developers
Watch out: free scans limited to 15,000 characters.
Prepostseo vs Detecting-AI.com FAQ
What is the difference between Prepostseo and Detecting-AI.com?
Prepostseo: Free plagiarism checker, paraphraser and AI detector in one site. Detecting-AI.com: AI text detector with plagiarism checks and developer APIs. Both are writing tools.
Is Prepostseo or Detecting-AI.com cheaper?
Prepostseo has the lower starting price: about $10 a month, against $15 for Detecting-AI.com.
Do Prepostseo and Detecting-AI.com have free plans?
Prepostseo: Yes. Detecting-AI.com: Yes.
Who makes Prepostseo?
Prepostseo is made by Prepostseo, based in Pakistan.
Who makes Detecting-AI.com?
Detecting-AI.com is made by Detecting-AI.com.
Which should I choose, Prepostseo or Detecting-AI.com?
Choose Prepostseo if you value many free tools without sign-up and apis available. Choose Detecting-AI.com if you value free scans without an account and accepts pdf and docx uploads.