There is no such thing as a publicly available reliable AI detector. They are all nothing but a borderline scam. Answer from SEOPub on reddit.com
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Copyleaks
copyleaks.com › home › ai detector
AI Detector - Free AI Checker for ChatGPT, GPT-5, Gemini & More
Copyleaks boasts one of the largest language databases for AI content detection, supporting over 30 languages with low false-positive rates for non-native English text. Whether you’re scanning content in English, French, German, Italian, ...
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Reddit
reddit.com › r/seo › is copyleaks a reliable ai content detector?
r/SEO on Reddit: Is CopyLeaks a reliable AI content detector?
September 13, 2024 -

I make all my content writers ensure their content passes AI detection using CopyLeaks... becausse I know all of them will try to take advantage of AI to write the bulk of their content...

Now, these guys are now all telling me that the tool sucks and that even though they rewrite entire paragraphs, their content is still flagged as AI content by this tool.

What do you guys think? Should I side with my writers and ditch this tool or should I side with CopyLeaks? :)

Discussions

Is CopyLeaks a reliable AI content detector?
There is no such thing as a publicly available reliable AI detector. They are all nothing but a borderline scam. More on reddit.com
🌐 r/SEO
23
4
September 13, 2024
Is Copyleaks an reliable AI detector?
I am in the same pickle now. Either Copyleaks is ridiculously accurate, or the other ones are extremely inaccurate. How did it end for you? More on reddit.com
🌐 r/ChatGPT
73
4
May 25, 2023
ChatGPT and Copyleaks
Many of the AI-detecting systems use machine learning themselves. If that's the case, the results are not entirely deterministic, especially if passed through different UIs/APIs that might quietly mangle the input. And if you're getting different results between text and PDF input, it might also be the case that the PDFs are not as machine readable as you expect. More on reddit.com
🌐 r/AskAcademia
22
7
February 19, 2024
Copyleaks 100% AI result
Walter Writes kinda saved me here lol because i ran into the same Copyleaks mess and fwiw it reminded me how these AI detector things freak out on super normal writing. best Ai writing tool assistants and all that stuff help you spot weird phrasing, but the detectors still guessy. i literally rewrote a paragraph with the walterwrites ai humanizer just to chill the tone and it dropped the flag. professors at TESU usually just ask for a quick explanation, they know Copyleaks throws false 100s. just be honest and youre fine tbh. More on reddit.com
🌐 r/tesu
39
18
December 1, 2024
People also ask

How Accurate is Copyleaks AI Detector?

The likelihood of human-written content being mistakenly labeled as AI-generated is .03%—one of the lowest among AI detectors. 

We’re committed to digital trust and accuracy. To minimize false positives:

  • Our algorithms distinguish human-generated text specifically.
  • We utilize user feedback to enhance our models.
  • New model detection is only introduced after extensive testing.
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copyleaks.com
copyleaks.com › home › ai detector
AI Detector - Free AI Checker for ChatGPT, GPT-5, Gemini & More
Does Copyleaks offer a free AI detector?

Every new user receives a limited number of free credits to explore our AI and plagiarism detection tools before committing to a paid plan.

Our Personal and Pro plans both include full access to AI detection, plagiarism checks, detailed reports, and our explainable AI Logic feature. You can find detailed pricing information on our pricing page.

For education institutions or enterprise teams that require API access, LMS integration, or customized pricing, please contact our sales team to discuss a tailored solution.

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copyleaks.com
copyleaks.com › home › ai detector
AI Detector - Free AI Checker for ChatGPT, GPT-5, Gemini & More
How was the Copyleaks AI detection model trained?

Using AI technology, the detector can accurately recognize AI-generated text and the signals it leaves behind, adding a layer of accuracy.

Learn more about our AI Detector testing methodologies.

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copyleaks.com
copyleaks.com › home › ai detector
AI Detector - Free AI Checker for ChatGPT, GPT-5, Gemini & More
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Chrome Web Store
chromewebstore.google.com › detail › ai-content-detector-copyl › gplcmncpklkdjiccbknjjkoidpgkcakd
AI Content Detector - Copyleaks - Chrome Web Store
Verify what content was written by a human or an AI chatbot with the AI Content Detector browser extension from Copyleaks.
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Copyleaks
app.copyleaks.com › dashboard › v1
Copyleaks: AI & Machine Learning Powered Plagiarism Checker
Copyleaks plagiarism checker is the best free online plagiarism checker tool. Contact us for any inquiries about our plagiarism detection services.
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SP College
staffsupport.spcollege.edu › hc › en-us › articles › 41435997611163-Copyleaks-AI-Logic-AI-Source-Match
Copyleaks AI Logic, AI Source Match – Faculty & Staff Support
Introduction“AI Logic” is Copyleaks’ enhanced AI content detection module. It doesn’t just flag whether a text might be AI-generated — it seeks to explain how and why a text is flagged. AI Source M...
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Google Workspace
workspace.google.com › marketplace › app › ai_and_plagiarism_checker_copyleaks › 484212953959
AI and Plagiarism Checker - Copyleaks - Google Workspace Marketplace
Copyleaks brings its powerful AI and plagiarism detection tools directly into Google Docs™, streamlining your writing and editing process. Instantly scan your content without leaving your document and receive clear feedback on originality.
Find elsewhere
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HIX Bypass
bypass.hix.ai › copyleaks
Copyleaks AI Detector - HIX Bypass
Bypass AI detection with HIX Bypass's undetectable AI tool. Make your AI- or ChatGPT-generated text undetectable for free today!
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Canisius
blogs.canisius.edu › coli › copyleaks-canisiuss-plagiarism-and-ai-content-detector
Copyleaks: Canisius’s Plagiarism and AI Content Detector | Center for Online Learning and Innovation
July 24, 2025 - On a more positive note, Copyleaks does allow for faculty to scan individual assignments as needed using the Teacher Scanning Tool: ... The Scanning Tool allows faculty to upload individual documents and scan them for plagiarism and AI detection.
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Medium
medium.com › aimonks › bypass-copyleaks-ai-detection-tips-tricks-91bedb096ce5
How to Bypass Copyleaks AI Detection - An All-Inclusive Guide | 𝐀𝐈 𝐦𝐨𝐧𝐤𝐬.𝐢𝐨
June 3, 2024 - This enables it to produce authentic-sounding content that can achieve high human scores on even the most stringent AI detectors like Copyleaks. The platform can humanize AI text from any AI language model, be it ChatGPT, Claude, Jasper, or GPT-4.
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Sapling
sapling.ai › ai-content-detector
AI Content Detector | GPT-5, Claude 4.5, Gemini 2.5 Detection
Free AI content detector with 97% accuracy. Detects GPT-5, Claude 4.5, Gemini 2.5, Qwen3, DeepSeek-V3 and other AI models. Analyze text, PDFs, and Word documents.
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Moodle
moodle.org › plugins › plagiarism_copyleaks
Moodle Plugins directory: Copyleaks Plagiarism and AI Content Detector plugin | Moodle.org
Bring the power of Copyleaks, an official solution provider, to Moodle! Quickly and easily detect potential plagiarism, AI-generated content, paraphrasing, and more.
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BrandWell
brandwell.ai › ai-content-detector
The AI Detector is a Real-time AI Checker and ChatGPT Detector |
October 22, 2024 - The AI Detector detects content marketing done with ChatGPT, Gemini, and Claude. Built-in plagiarism scanner. 100% free. Start your AI Checker scan now.
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University of Illinois Springfield
uis.edu › colrs › instructional-tools › academic-integrity › copyleaks-plagiarism-and-ai-detection-canvas
Copyleaks Plagiarism and AI Detection for Canvas | University of Illinois Springfield
Copyleaks can assist instructors in detecting and preventing plagiarism. Copyleaks crawls the internet for content that is not behind paywalls. It also has an integrated AI detector that is enabled and scored separately from the plagiarism detector. Copyleaks is integrated into Canvas Assignments ...
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LogicWeb
logicweb.com › copyleaks-ai-content-detector
Copyleaks – AI content detector - LogicWeb
November 9, 2025 - Verifies if content is human or AI-written. ... The 'AI Detector' by Copyleaks is a comprehensive tool designed to distinguish whether content was created by a human or an AI. It efficiently analyses the characteristics of the text and asserts if it is AI-generated or human-written.
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Originality.AI
originality.ai › blog › copyleaks-ai-content-detection-review
Copyleaks AI Content Detection Review – Originality.AI
October 27, 2025 - Today’s AI writing tools rely on existing data to generate content and fail at providing meaningful insights or original ideas. So, how can you make sure the content on your site is human-written and likely to be indexed by Google? This is where Copyleaks comes to the rescue.
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Gowinston
gowinston.ai › home › blog › copyleaks ai detector (& plagiarism checker) review – does it actually work?
Copyleaks AI Detector Review
February 2, 2024 - We then tested our detector on this dataset. It correctly identified 99.98% of the AI texts and 99.5% of the human texts. This gave an overall accuracy of 99.74%. Here are some of Copyleaks’ other interesting tools and features:
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ZDNET
zdnet.com › home › innovation › artificial intelligence
I've been testing AI content detectors for years - these are your best options in 2025 | ZDNET
October 29, 2025 - If you want to test a content detector yourself using the same text blocks, you can pull them from this document. To evaluate AI detectors, I reran my five-test series across 11 detectors. In other words, I cut and pasted 55 individual tests (I had a lot of coffee). Detectors I tested include BrandWell, Copyleaks, GPT-2 Output Detector, GPTZero, Grammarly, Monica, Originality.ai, QuillBot, Undetectable.ai, Writer.com, and ZeroGPT.