kitio.aiIsgen vs TheChecker.AI
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Isgen starts at See pricing page and TheChecker.AI starts at $9.90/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
- Sentence-level AI detection
- Plagiarism checker
- Bulk file scanning
- Grammar checker
- AI humanizer
- Presentation maker
- AI probability scoring
- Paragraph-level analysis
- PDF and document upload
- Text humanizer
- MCP tools for Claude
| Feature | Isgen | TheChecker.AI |
|---|---|---|
| Best for | AI detector with plagiarism checking, humanizer and slide maker | AI text detector with a humanizer and an MCP connector for Claude |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $9.90/mo |
| Free plan | Yes | Yes |
| Made by | Isgen | TheChecker.AI |
| Based in | – | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Isgen starts at See pricing page and TheChecker.AI starts at $9.90/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Up to 5,000 characters per check
- Basic AI detection
Academic
$8/mo billed yearly
- 350,000 detection words a month
- Premium plagiarism checker
- Batch file upload
Writing
$15/mo billed yearly
- 50,000 humanizer words a month
- AI proofreader
- 4,000 presentation credits
Ultimate
$24/mo billed yearly
- Unlimited words
- Humanizer and proofreader
- 8,000 presentation credits
- Priority support
3 plans
Monthly
$9.90/mo
- Unlimited AI detections
- 5,000 humanizer words a month
- PDF and document upload
Yearly
$99/yr
- Everything in Monthly
- Billed once a year
Enterprise
Contact sales
- LMS and API integration
- Bulk user management
- Advanced analytics
Prices in USD, checked Nov 5, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
Isgen
- Highlights AI text sentence by sentence
- Bulk scanning on paid plans
- Bundles plagiarism and grammar checks
- AI detectors can flag human writing
- Free checks capped at 5,000 characters
- Listed prices assume yearly billing
TheChecker.AI
- Unlimited checks on the paid plan
- Works inside Claude through MCP
- Humanizer credits never expire
- Detection scores are probabilistic, not proof
- Humanizer words are capped each month
- Free option is only a demo
Which one should you choose?
Choose Isgen if you want:
- Highlights AI text sentence by sentence
- Bulk scanning on paid plans
- Bundles plagiarism and grammar checks
Watch out: ai detectors can flag human writing.
Choose TheChecker.AI if you want:
- Unlimited checks on the paid plan
- Works inside Claude through MCP
- Humanizer credits never expire
Watch out: detection scores are probabilistic, not proof.
Isgen vs TheChecker.AI FAQ
What is the difference between Isgen and TheChecker.AI?
Isgen: AI detector with plagiarism checking, humanizer and slide maker. TheChecker.AI: AI text detector with a humanizer and an MCP connector for Claude. Both are writing tools.
Is Isgen or TheChecker.AI cheaper?
Isgen starts at See pricing page and TheChecker.AI starts at $9.90/mo. Check both pricing pages for current plans.
Do Isgen and TheChecker.AI have free plans?
Isgen: Yes. TheChecker.AI: Yes.
Who makes Isgen?
Isgen is made by Isgen.
Who makes TheChecker.AI?
TheChecker.AI is made by TheChecker.AI.
Which should I choose, Isgen or TheChecker.AI?
Choose Isgen if you value highlights ai text sentence by sentence and bulk scanning on paid plans. Choose TheChecker.AI if you value unlimited checks on the paid plan and works inside claude through mcp.