Copyleaks
copyleaks.com
AI-powered plagiarism and AI-content detection platform for education and enterprise.
Quick Information
- Category:
- Writing & Chat
- Pricing:
- Freemium
- Platforms:
- Web
- API Available:
- Yes
- Last Verified:
- September 2026
What Is Copyleaks?
Copyleaks combines AI content detection and plagiarism checking in a single unified report, supporting cross-language detection across more than 100 languages — genuinely useful for academic institutions and publishers dealing with translated or cross-language content, a gap many single-purpose AI detectors don't cover. Its 2026 pricing runs Essential at $8.99/month (100 pages/month) for individual users, Personal at $13.99/month (annual) combining AI and plagiarism detection with AI image detection, and Pro at $99.99/month (or $74.99/month annual) with 1,000 monthly credits, up to 25 seats, website scanning, and analytics.
Copyleaks claims 99.1% AI-detection accuracy, but it's worth knowing that independent 2026 benchmarks put real-world performance in a meaningfully lower range — roughly 77% to 96% depending on test methodology — a gap common across the entire AI-detection category rather than unique to Copyleaks specifically. That's an important caveat for any high-stakes use case like academic integrity enforcement, where false positives or negatives carry real consequences.
It's aimed at educators, publishers, and content teams needing combined AI-detection and plagiarism checking, especially those dealing with multilingual or cross-language content, with the accuracy caveat worth factoring into how much weight any single detection result should carry. See our Writing & Chat tools directory for related tools like Originality.ai.
What Can You Use Copyleaks For?
Combined AI and plagiarism detection
Checks content for both AI generation and plagiarism in a single unified report.
Cross-language plagiarism detection
Detects plagiarism across more than 100 languages, including translated content.
AI image detection
Detects AI-generated images alongside text-based AI detection.
Copyleaks Features
- Unified AI and plagiarism report — Combines AI content detection and plagiarism checking into one report.
- Cross-language detection — Detects plagiarism even when content has been translated from one language to another.
- AI image detection — Identifies AI-generated images in addition to text.
- Website scanning — Scans entire websites for plagiarism and AI content on the Pro tier.
Who Is Copyleaks For?
- Educators and academic institutions — Checks student work for both plagiarism and AI generation in a single report.
- Publishers and content teams — Uses cross-language detection to catch plagiarism across translated content.
Copyleaks Pros & Limitations
What We Like
- Combines AI detection and plagiarism checking, covering more ground than single-purpose tools
- Cross-language detection across 100+ languages is a genuine differentiator
- Affordable entry-level Essential plan for individual users
Limitations
- Real-world accuracy (77-96% per independent benchmarks) falls short of the claimed 99.1%
- False positives/negatives carry real consequences for high-stakes uses like academic integrity
- Pro-tier features like website scanning require a significant cost jump from Personal
Copyleaks Pricing
| Plan | Price | Main Features |
|---|---|---|
| Essential | $8.99/month | 100 pages/month (~25,000 words) |
| Personal | $13.99/month (annual) | Unified AI and plagiarism detection, AI image detection |
| Pro | $99.99/month ($74.99 annual) | 1,000 monthly credits, up to 25 seats, website scanning, analytics |
| Education/Enterprise | Custom | Per-seat or institution-wide pricing |
Pricing was last verified September 2026. Check the official website for the latest pricing.
AI Listing Jungle Ranking
- Global Rank:
- #638
- Overall Score:
- 21.6/100
- Monthly Users:
- –
- Rank Change:
- ▲ 3
This ranking reflects AI Listing Jungle's own independent scoring methodology and is not an endorsement by Copyleaks or its company. How Our Rankings Work
Frequently Asked Questions
How accurate is Copyleaks’ AI detector?
Copyleaks claims 99.1% accuracy, but independent 2026 benchmarks show real-world performance between 77% and 96% depending on methodology.
Does Copyleaks detect cross-language plagiarism?
Yes, it supports plagiarism detection across more than 100 languages, including translated content.
Does Copyleaks detect AI-generated images?
Yes, AI image detection is included starting on the Personal plan.
How much does Copyleaks cost?
Plans range from $8.99/month (Essential) to $99.99/month (Pro), with custom pricing for education and enterprise.
Our Take
Copyleaks' combined AI-and-plagiarism detection and genuine cross-language support address a real gap that single-purpose detectors miss.
Treat any single detection result as one data point rather than definitive proof — independent accuracy benchmarks fall meaningfully short of the vendor's claimed accuracy rate.
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