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GCopyleaks AI Detector vs Paraphraser.io
Pricing, features, platforms and who each one suits — side by side.
VS
C
Choose Copyleaks AI Detector if…
- you're in its core audience: educators, students
P
Choose Paraphraser.io if…
- you want the lower entry price ($3.96/mo vs $13.99/mo)
- you're in its core audience: students, content writers
Side by side
Feature Copyleaks AI Detector Paraphraser.io
Pricing modelFreemiumFreemium
Starting price$13.99/mo$3.96/mo
Free plan
Free trial
API
Open source
PlatformsWeb, APIWeb, API
CategoryAI Detection & HumanizersParaphrasing & Rewriting
CompanyCopyleaks—
Based in——
Founded——
Part of——
What you'd pay
The cheapest plan that fits, per month, billed yearly where the plan offers it.
| Team size | Copyleaks AI Detector | Paraphraser.io |
|---|---|---|
| 1 person | $13.99 Personal | $3.96 Diamond |
| 5 people | $74.99 Pro | $3.96 Diamond |
| 20 people | $74.99 Pro | $3.96 Diamond |
Work it out for your team
- Paraphraser.ioDiamond$3.96/mo
- Copyleaks AI DetectorPersonal$13.99/mo
The cheapest paid plan with a published price that fits. Custom and sales-quoted plans aren't included.
What the free plans include
Copyleaks AI Detector
Free plan limits aren't published.
Paraphraser.io
- Word limit shown as 0 / 400 words in the input box
- Word changer, fluency, standard, formal & smooth modes with 600 words limit
- Other modes (Creative, Smarter, Shorten, Academic, Expand) shown as premium-gated
- Pro raises the limit to 1500 words
Key features
C
- Detects AI-generated text from ChatGPT, Gemini and others
- Plagiarism detection for text
- AI image detection
- Credit system: one credit covers 250 words or one image
- One-time extra credit purchases
- API access on enterprise plans
- LMS integration for education
P Paraphraser.io
- 10+ paraphrasing modes, including Academic, Formal and Humanize
- Custom tone mode
- Click-to-swap synonym suggestions
- Frozen words to protect key terms
- Text extraction from images and screenshots
- Speech-to-text and recorded audio input
- File upload
- Support for 20+ languages
Plans and prices
From each vendor's site. Prices change — confirm before buying.
Copyleaks AI Detector
FreeFree
Personal$16.99/mo, or $13.99/mo billed annually
Pro$99.99/mo, or $74.99/mo billed annually
Education / EnterpriseCustom
Paraphraser.io
FreeFree
Silver$4.55/week
Gold$9.55/month
Diamond$0.99/week, billed annually at $47.52
Strengths and limitations
Copyleaks AI Detector
- Free credits for new users
- Covers AI detection, plagiarism and image detection in one plan
- Annual billing lowers Personal to $13.99/mo
- Unused monthly credits are cancelled at the end of each month
- API and LMS access only on custom-priced plans
Paraphraser.io
- Free tier with five modes and no daily cap
- Supports more than 20 languages
- Accepts image, audio and file input
- Annual Diamond plan works out to about $3.96 per month
- API access only on the Diamond plan
- Advanced modes such as Creative and Academic require a paid plan
- Paid plans cap the total words and paraphrases
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Facts from each vendor's public pages, prices checked Oct 26, 2026. Editorial policy