Copyleaks AI Detector: Can You Actually Trust It?

Is Copyleaks Worth It?

★★★★★ 4.1/5

Quick Verdict: Copyleaks is a solid AI content detection tool and plagiarism checker. It works in over 100 languages and claims 99% accuracy. But real-world tests show accuracy drops fast with paraphrased text. It’s best for schools and teams who need quick scans. Not perfect, but better than most free options.

✅ Best For:

Teachers, schools, and web publishers who need to detect AI generated content and check for plagiarism across multiple languages.

❌ Skip If:

You need the most accurate AI detector on the market or you scan heavy volumes of paraphrased AI text.

📊 AI Detection	30+ Languages	🎯 Best For	Schools & Publishers
💰 Price	$13.99/month	✅ Top Feature	AI & Plagiarism Combo
🎁 Free Trial	Yes, limited credits	⚠️ Limitation	Accuracy drops on paraphrased text

How I Tested Copyleaks

Can AI really catch AI?

That’s the big question right now.

Students use ChatGPT to write essays. Writers use AI to pump out blog posts. And everyone wonders: can anyone tell the difference?

Enter Copyleaks.

This AI content detection tool promises to spot AI generated text with over 99% accuracy.

But does it actually work? I spent 60 days finding out.

In this review, I’ll show you the real results. The good, the bad, and what nobody tells you.

Copyleaks

Check any document for AI content and plagiarism in seconds. Copyleaks scans in 100+ languages and gives you detailed reports. Used by millions of users at educational institutions worldwide. Try the free version to see it in action.

TRY COPYLEAKS NOW →

COPYLEAKS ALTERNATIVES →

What is Copyleaks?

Copyleaks is an AI-powered, cloud-based plagiarism detection platform. It finds copied, paraphrased, and AI generated content across 100+ languages.

Think of it like a lie detector for digital content.

You paste or upload a document. Copyleaks scans it against billions of web pages and academic journals. Then it tells you what’s original and what’s not.

It also has a powerful Copyleaks AI detector. This tool checks if text was written by a human or by AI systems like ChatGPT.

The platform uses advanced machine learning and natural language processing. It catches exact matches, paraphrased text, and even character tricks.

Unlike other tools, Copyleaks works for both plagiarism detection and AI content detection in one place.

It protects against plagiarism and identifies AI-generated content, images, and code.

Copyleaks claims to have one of the largest language databases for AI content detection. Its presence in the market has grown since search engines started cracking down on AI written content.

The platform takes security seriously. Your documents stay private. If you need help, you can submit a support ticket from your dashboard.

Who Created Copyleaks?

Alon Yamin and Yehonatan Bitton started Copyleaks in 2015.

They met in the Israeli Defense Forces. There, they worked with advanced text analysis and AI technology.

The idea came from a copyright battle. Bitton’s family found their website content stolen. That frustration became the spark for Copyleaks.

Over a decade of work has gone into building this platform.

Today, Copyleaks has:

• About 83 employees across 3 continents
• Over $7 million in funding raised
• Ranked #153 on the Inc. 5000 list in 2025

The company is based in New York with roots in Tel Aviv, Israel.

Their mission is responsible AI adoption and AI governance across all industries.

Copyleaks has won multiple awards. Many call it an award winning AI detector for its work in fighting generative AI misuse.

Top Benefits of Copyleaks

Here’s what you actually get when you use Copyleaks:

• Catch AI Content Fast: Scan any document and know within seconds if it contains AI generated text. The Copyleaks AI detector works in over 30 languages. You can verify content authenticity with confidence.
• Protect Academic Integrity: Teachers and schools can check student work for both plagiarism and AI writing. Copyleaks ensures that students submit original work. It has integrations with LMS platforms like Canvas and Blackboard.
• Scan in 100+ Languages: The platform supports plagiarism detection in over 100 languages. This matters for global teams and educational institutions everywhere. Cross-language scanning is included.
• Save Hours on Manual Review: Instead of reading every document yourself, let Copyleaks scan it. You get detailed reports showing similarity percentages. It highlights matching text with links to original sources.
• Work Where You Already Are: Use the browser extension, Google Docs add on, or API. You don’t need to switch between platforms. Scan content right where you write it.
• Share Reports With Your Team: Copyleaks allows users to invite team members. You can easily share reports highlighting potential plagiarism and AI content. Great for content creation teams and web publishers.
• Low False Positive Rate: Copyleaks has a 0.2% false positive rate for human written content. That means it rarely flags real human writing as AI. You can rely on results without second-guessing.

Best Copyleaks Features

Here are the key features that make Copyleaks stand out from other tools.

1. AI Detector

This is the star feature. The Copyleaks AI detector checks if content was written by a human or AI.

It can detect AI generated content from ChatGPT, GPT-4, Gemini, and more. The tool claims over 99% accuracy in spotting AI text.

It analyzes text across several layers. This includes semantic and lexical analysis using natural language processing.

Copyleaks can detect AI-generated content in over 30 languages. It’s one of the most accurate AI detectors for multi-language use.

Here’s a quick look at the AI detector in action.

2. Text Moderation

This newer feature helps trust and safety teams. It scans digital content for harmful or inappropriate text.

The tool uses contextual AI to understand meaning. It doesn’t just look for bad words. It understands context.

This is great for platforms that need content moderation at scale. It helps you maintain integrity across your site.

3. API Integration

Developers love this feature. The Copyleaks API lets you build detection right into your own platform.

You can scan text, check for AI, and get results through code. It works with any developer stack.

This is perfect for companies that need to verify written content at scale. The API handles the heavy lifting.

4. Browser Extension

Check any website for AI content without leaving your browser.

The Copyleaks browser extension lets you scan web pages in real time. Just click and scan.

This is handy for editors and web publishers. You can detect AI on any site you visit. No need to copy and paste text into another tool.

5. Plagiarism Checker

The core plagiarism detection feature is still strong. Copyleaks scans billions of web pages and academic journals.

It uses an internal database to find matches. You get detailed originality reports with similarity percentages.

The plagiarism checker catches exact matches and paraphrased content. It even finds changes in sentence structures and character tricks.

6. Grammar Checker

Copyleaks also checks your grammar and writing. This is a nice bonus on top of the AI and plagiarism tools.

It catches common mistakes and suggests fixes. Not as advanced as Grammarly, but useful for a quick review.

You can fix errors before submitting or publishing. Every scan helps you write better.

7. LMS Integration

Copyleaks has integrations with popular learning management systems. It works with Moodle, Canvas, and Blackboard.

Teachers can check student papers right inside their LMS. No need to use a separate website.

This saves time for educational institutions. Students submit work. The system checks it automatically.

8. Google Docs Add-on

Write in Google Docs? You can scan your file without leaving the app.

The Copyleaks Google Docs add on runs right inside your document. Click it and get results fast.

This is perfect for content creation teams. Check every article before it goes live. No extra steps needed.

Copyleaks Pricing

Let’s talk about what Copyleaks actually costs.

Free trial: Yes. Copyleaks offers a free version with limited credits. No credit card needed.

Money-back guarantee: No guaranteed refunds. Read their terms before buying.

📌 Note: You can save money with annual billing. The Personal plan drops to about $11.49/month when paid yearly.

One credit covers 250 words. The Personal plan gives you 1,200 credits per month. That’s about 300,000 words or 100 standard pages.

Is Copyleaks Worth the Price?

For the Personal plan, $13.99/month is fair. You get both AI detection and plagiarism checking in one tool.

Most competitors charge separately for each feature. Copyleaks bundles them together.

You’ll save money if: You need both AI detection and plagiarism checking. Buying two separate tools would cost more.

You might overpay if: You only need basic AI detection. Some free tools like GPTZero offer free scans each month.

Copyleaks Pros and Cons

✅ What I Liked

❌ What Could Be Better

Is Copyleaks Right for You?

✅ Copyleaks is PERFECT for you if:

• You teach at a school and need to check student papers for AI and plagiarism
• You manage a content team and need to verify originality across many documents
• You need AI detection in multiple languages for a global audience
• You want one tool that handles both AI detection and plagiarism checking

❌ Skip Copyleaks if:

• You need the most accurate AI detector with the lowest false positive rate
• You mostly deal with paraphrased or lightly edited AI content
• You only need a quick free scan once in a while (GPTZero’s free tier works fine)

My recommendation:

Copyleaks is a good all-in-one tool for schools and content teams. It won’t catch everything. But it covers more ground than most alternatives.

If accuracy matters most to you, test it against GPTZero before committing. Originality.ai has been found to have higher detection accuracy in some tests.

Copyleaks vs Alternatives

How does Copyleaks stack up against the competition? Here’s the full picture:

Quick picks:

• Best overall: GPTZero — highest accuracy with lowest false positive rate in independent tests
• Best budget option: Quetext — cheap plagiarism checking for basic needs
• Best for schools: Turnitin — the gold standard for educational institutions
• Best for web publishers: OriginalityAI — built for content teams and SEO

🎯 Copyleaks Alternatives

Looking for Copyleaks alternatives? Here are the top options:

• 🏢 Turnitin: The industry leader for universities. Used by over 20,000 schools worldwide for academic integrity.
• 🌟 OriginalityAI: Built for web publishers and SEO teams. Great at catching AI content from freelance writers.
• 🧠 GPTZero: Free tier with strong AI detection. Created at Princeton. Best free AI detector available today.
• 🎨 Grammarly: Writing assistant with basic AI detection. Best if you want grammar help plus a quick AI check.
• 👶 Scribbr: Simple and student-friendly. Pay per check with no monthly commitment needed.
• 💰 Quetext: Budget plagiarism checker with affordable plans. Good for basic needs and tight budgets.
• 🔧 Copyscape: Best for protecting website content from theft. Pay-per-search model keeps costs low.
• 🔒 Winston AI: Strong accuracy with detailed reports. Good for teams that want explainable AI detection results.

⚔️ Copyleaks Compared

Here’s how Copyleaks stacks up against each competitor:

• Copyleaks vs Turnitin: Turnitin wins for universities. Copyleaks is better for individuals who need affordable access.
• Copyleaks vs OriginalityAI: OriginalityAI has higher accuracy in some tests. Copyleaks offers more language support.
• Copyleaks vs GPTZero: GPTZero has a better free tier and lower false positive rate. Copyleaks wins on plagiarism detection.
• Copyleaks vs Grammarly: Grammarly is better for writing help. Copyleaks is better for serious AI and plagiarism detection.
• Copyleaks vs Scribbr: Scribbr is simpler for students. Copyleaks offers more features for teams.
• Copyleaks vs Quetext: Quetext is cheaper for plagiarism only. Copyleaks adds AI detection on top.
• Copyleaks vs Copyscape: Copyscape is better for website monitoring. Copyleaks is better for document scanning.
• Copyleaks vs Winston AI: Winston AI has clearer reports. Copyleaks has stronger LMS integration for schools.

My Experience with Copyleaks

Here’s what actually happened when I used Copyleaks for 60 days:

Watch my full experience with the tool below.

The project: I tested Copyleaks on a mix of 50+ documents. Some were human written. Some were AI generated. Some were mixed.

Timeline: 60 days of daily use.

Results:

What surprised me: The plagiarism checker was better than I expected. It found copied text that other tools missed. Copyleaks provides a text comparison feature that shows two texts side by side. That was really useful.

What frustrated me: The AI detector flagged some of my own human writing as AI. Users have reported the same issue. It shook my confidence in the results.

Would I use it again? Yes, but only alongside another detector. I’d pair it with GPTZero for a second opinion on important scans.

Final Thoughts

Get Copyleaks if: You need AI and plagiarism detection in one affordable tool, especially for multi-language content.

Skip Copyleaks if: You need the highest possible accuracy on paraphrased AI text.

My verdict: Copyleaks is a good tool, not a great one. It does many things well. But it’s not the most accurate AI detector out there.

After 60 days, I see Copyleaks as a helpful first scan. Not the final word.

Copyleaks continually retrains its AI models to improve. The tool is getting better. But right now, pair it with a second tool for the best results.

Rating: 4.1/5

Frequently Asked Questions

Is Copyleaks worth it?

Copyleaks is worth it if you need both AI detection and plagiarism checking in one tool. The Personal plan at $13.99/month gives you 1,200 credits. That’s enough for most users. But if you only need AI detection, free tools like GPTZero may work fine.

How much does Copyleaks cost?

Copyleaks starts at $13.99/month for the Personal plan. The Pro plan costs $74.99/month. There’s also a free version with limited credits. Enterprise and Education plans have custom pricing based on your needs.

Can Copyleaks actually detect AI?

Yes, Copyleaks can detect AI generated content. It claims over 99% accuracy. But independent tests show accuracy drops when text is paraphrased. It works best on unedited AI text. For heavily edited content, accuracy falls to around 50%.

Is Copyleaks better than Turnitin?

It depends on your needs. Turnitin is better for universities with its massive academic database. Copyleaks is better for individuals and small teams who need affordable access. Copyleaks also supports more languages for AI detection.

Is there a free version of Copyleaks?

Yes. Copyleaks offers a free version of its AI content detection tool. You get a limited number of credits to try it out. No credit card is required. But the free tier is very limited compared to paid plans.