kitio.aiCopyleaks vs Isgen
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. Copyleaks starts at See pricing page and Isgen starts at See pricing page. 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
- Plagiarism detection
- AI content detector
- Multilingual checks
- LMS integrations
- Code plagiarism
- Sentence-level AI detection
- Plagiarism checker
- Bulk file scanning
- Grammar checker
- AI humanizer
- Presentation maker
| Feature | Copyleaks | Isgen |
|---|---|---|
| Best for | Plagiarism and AI content detection for schools and businesses | AI detector with plagiarism checking, humanizer and slide maker |
| Category | Writing | Writing |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | See pricing page |
| Free plan | Yes | Yes |
| Made by | Copyleaks | Isgen |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
Copyleaks starts at See pricing page and Isgen starts at See pricing page. 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
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
Copyleaks
- Checks many languages
- Strong LMS and API support
- Detects paraphrased copying
- Credit-based pricing can confuse
- False positives on some human text
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
Which one should you choose?
Choose Copyleaks if you want:
- Checks many languages
- Strong LMS and API support
- Detects paraphrased copying
Watch out: credit-based pricing can confuse.
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.
Copyleaks vs Isgen FAQ
What is the difference between Copyleaks and Isgen?
Copyleaks: Plagiarism and AI content detection for schools and businesses. Isgen: AI detector with plagiarism checking, humanizer and slide maker. Both are writing tools.
Is Copyleaks or Isgen cheaper?
Copyleaks starts at See pricing page and Isgen starts at See pricing page. Check both pricing pages for current plans.
Do Copyleaks and Isgen have free plans?
Copyleaks: Yes. Isgen: Yes.
Who makes Copyleaks?
Copyleaks is made by Copyleaks, based in United States.
Who makes Isgen?
Isgen is made by Isgen.
Which should I choose, Copyleaks or Isgen?
Choose Copyleaks if you value checks many languages and strong lms and api support. Choose Isgen if you value highlights ai text sentence by sentence and bulk scanning on paid plans.