Our AI Checker, available for free below, is the?Most Accurate?AI Detector for GPT4.1, ChatGPT4o, Gemini 2.5, Claude 3.7, DeepSeek V3 and other popular AI writing tools.
Trusted by Industry Leaders
By narrowing our focus on website content and serving the SEO community (digital marketers, content marketers, copy editors, website publishers and writers) we have built the most accurate AI checker with the extra features you need to be able to hit publish with integrity!
Our?complete patented content quality solution?includes our accurate AI Checker, Plagiarism Checker, Readability Checker, Fact Checker and Grammar Checker. Using Originality.ai allows you to ensure all content meets your standards. We are not against AI generated content, but believe that YOU should be the one making the decision on if and when you publish it. Do you want your writers to copy and paste their text from ChatGPT without you knowing?
A complete suite of QA/QC products
In addition to our AI checker features listed on this page we have a complete suite of AI tools to help Editors including?Plagiarism Checking,?Fact Checking?&?Readability Checking.
AI Checker???
Most Accurate?AI Detector for all AI writing tools. Try now for free.
Plagiarism Checker???
See if text has been plagiarized from anywhere on the internet.
Content Optimizer???
AI-powered content optimization that helps your content predictably rank better in Google.
Readability Checker? ?
Optimize readability for your target audience to communicate clearly.?
Bulk Scan???
Scale content QA and scan an entire website’s content easily.
Grammar Checker???
Say goodbye to typos. Catch grammar and spelling errors before you publish.
Fact Checker???
Use our fact checking aid to help ensure your content is factually correct.
Originality.ai identified As The Most Accurate AI Detector Across Multiple Studies
Our AI-Generated Text Detector has repeatedly been shown to be the most accurate at detecting AI-generated content by both our?internal testing?and?3rd party peer-reviewed research papers.
Across all Large Language Models (LLMs) including GPT4.1, ChatGPT4o, Gemini 2.5, Claude 3.7, DeepSeek V3 and other popular AI writing tools we are able to detect AI generated text. Any AI Detectors accuracy claim that is not supported with an in-depth analysis, should be viewed skeptically.
Study
Results Shown
Accuracy comparison of AI text detection tools on AH&AITD
Percentage correct for GPT-4 papers
Mean accuracy at FPR=5% for detectors on non-adversarial outputs
Mean accuracy for ChatGPT-generated and AI rephrased articles
Mean AUROC of GPT-3.5 vs. human-written, GPT-4 vs. human-written, mixed human/GPT-3.5 vs. human-written, mixed human/GPT-4 vs. human-written, translated vs, human-written
Mean accuracy for (a) human vs. AI and (b) human vs. disguised
Originaltiy.ai
97.09
100
85
100
87.9
86.5
GPTZero
63.77
57
67
45
77.28
84.5
Writer
69.05
40
Not included
Not included
Not included
Not included
CopyLeaks
Not included
100
Not included
Not included
Not included
Not included
TurnItIn
Not included
100
Not included
62
Not included
Not included
Binoculars
Not included
Not included
80
Not included
Not included
Not included
FastDetectGPT
Not included
Not included
74
Not included
Not included
Not included
ZeroGPT
Not included
83
66
92
Not included
85
GPT-2 Output Detector
Not included
Not included
Not included
85
Not included
Not included
Sapling
66.66
33
Not included
Not included
75.92
Not included
Winston
Not included
Not included
71
Not included
Not included
77
GPTkit
55.29
Not included
Not included
Not included
Not included
Not included
Zylalab
68.23
Not included
Not included
Not included
Not included
Not included
SEO.ai
Not included
83
Not included
Not included
Not included
Not included
Scribbr
Not included
69
Not included
Not included
Not included
Not included
Grammica
Not included
62
Not included
Not included
Not included
Not included
Crossplag
Not included
69
Not included
Not included
Not included
Not included
OpenAI
Not included
40
Not included
Not included
Not included
Not included
IvyPanda
Not included
40
Not included
Not included
Not included
Not included
GPTRadar
Not included
31
71
Not included
Not included
Not included
Content at Scale
Not included
52
Not included
50
Not included
Not included
ContentDetector.ai
Not included
7
Not included
Not included
Not included
Not included
GLTR
Not included
Not included
63
Not included
Not included
Not included
RoBERTa-Base (GPT2)
Not included
Not included
59
Not included
Not included
Not included
RoBERTa-Large (GPT2)
Not included
Not included
57
Not included
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Not included
RoBERTa-Base (ChatGPT)
Not included
Not included
45
Not included
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LLMDet
Not included
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35
Not included
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Not included
3rd Party AI Detection Accuracy Studies
Originality.ai was shown to be the most accurate AI detector across multiple published studies. Including the most in depth analysis to date looking at 12 detectors and 11 LLM's.
Read more ?Internal AI Detection Benchmark & Study
Our detector was the most accurate across multiple publicly available datasets tested covering blog posts, books, research papers, essays, news, wiki and reviews. We built and open-sourced a testing tool to help others replicate on their own data.
Read more ?Our unfair advantage
AI Detectors without an in-depth analysis verified by third party studies should be used with caution.
Sign up now????Large AI Models
Because we are not built for Students and therefore we only offer the limited free AI Checker above we can focus our resources on using a larger AI detection model.
Focused on Published Text, Not Academia, Research, or Historical
Instead of training our detector on all types of written text our model specializes on content meant to be published on the internet or in print and created for the average reader (web content, blog posts, books, news etc).
Built and Trained on “Adversarial” Datasets
We have a full time “Red Team” that is actively testing strategies to make undetectable AI content. Once they find a strategy (such as Paraphrase Plagiarism) that can create high quality?undetectable AI?generated text and bypass our AI content detector we improve our AI technology and make it detectable.
Demonstrate Originality With Writing Replays
Demonstrate Originality With Writing Replays: Using our Free AI Detection Chrome Extension you can visualize the entire writing process of any Google Document helping to reduce the chance of a false positive causing problems.
Having the ability to visualize how the document was created (a sped up character by character/word by word replay) helps resolve any uncertainty about whether or not text is AI or human generated.
Free AI Checker Chrome Extension
Quick scan
Check for AI Content on Any Website Quickly
With our Chrome Extension you can check any webpage you are visiting to see if it is AI written text.
Easy copy paste
Quickly Check Content Using our Copy/Paste Window
The easy to use copy and paste text window allows you to check any piece of content within any text editor, such as Wordpress.
Identify Copy Paste
Watch a Writer Write and Monitor for AI-generated copy
With our Chrome Extension you can watch the writer write the entire document at a sped up speed.
Document History
See A Table & Graph Of Activity By the Author
See a history of the writing sessions, durations, authors and number of characters to verify if content is Original.
Features Our Enterprise Customers Love
We understand the world of large volume content operations and Originality.ai is built to be the complete solution which allows organizations to hit publish with integrity and at scale. The risks associated with publishing AI generated content (negative impact on Google search results, factually incorrect/embarrassing AI hallucinations published) have never been greater.
Sign up now????Team?Management
Add, remove and monitor usage of your organizations users. Assign roles as Admin, Manager or User? to limit individual ability to access the whole set of features.
AI Checker API
Well Documented, Reliable, Fully Featured and Fast API Access. See the AI detection?API documentation?that your developers will love to work with.?
Your Text is Encrypted
TLS 1.2 or higher is achieved with our end-to-end military grade 256 bit encryption. That means, your content is highly protected, even our back-end engineers cannot access them.
Data Not Used in Training
Opt-Out Of Your Data Being Used in Future AI Training. You can select to have none of your data used for any AI training. Or, you may choose to be generous enough to opt-in.
A Complete QA/QC Solution
Plagiarism Checking, Fact Checking and a Readability checker are all included in our complete solution for organizations to be able to hit publish with integrity.
One-Click delete Scan History
We provide an easy 1-click option to delete all of your scan history. With time, Scan History gets flooded with numerous scans, you may choose to wipe all out just by a click.
Sentence Level Highlighting
Our AI content detector will highlight sentences indicating the probability of whether or not each sentence was AI written or human written.
AI Detection Models to Suit Your Needs…
The use of AI in content writing is nuanced. We have models that are tuned to your specific use case. Whether you allow AI editing or want NO AI to get past your review we have a model that is optimized for your approach to AI text detection.
For students & teachers
Lite 1.0.1
When you allow AI editing (think grammarly)
For professionals
Turbo
Zero tolerance policy on use of AI
For Non-English texts
Multi Language
Optimized for 30 Languages
Including Spanish, Portuguese, French, German, Dutch, Arabic and many other languages.
Features of our AI Detector
Our industry-leading AI detector provides you with the ability to accurately identify AI content, correct accidental AI plagiarism, and share reports to show your writing is Original.
Sign up now????Shareable Reports
Easily share the results. Show your text is Original with a shareable link.
Edit
Streamline editing in-app with our fully featured text editor and then scan again.
Export
Easily export text with one-click copy pasting to Google Docs or Microsoft Word for further editing.
Highlighting
See what sections of the text is most likely to be identified as AI-generated.
Scan History
See a complete history of all scans that you can reference in the future as needed.
PDF Report
Download a PDF report showing if the text is Likely AI or Original.
Web Publishers
Uphold your site's credibility by ensuring every article is original, trustworthy, and AI-checked before it reaches their audience or impacts search rankings.
Content Marketers
Maintain brand integrity, optimize for SEO, and ensure content resonates with human audiences, while staying compliant with originality and factual accuracy.
Writers
Ensure your content is original, polished, and publication-ready. Trust our tools to avoid AI overuse, maintain authenticity, and meet editorial standards.
Integrations: Extensions & Plugins
Seamlessly integrate our AI Checker into your favorite platforms like Chrome, WordPress, and more.
Step 1
Paste or Upload Text
Login to Originality.ai and paste your text into the editor. You may also upload a PDF or enter a URL for scanning.
Step 2
Select Scan Types
Select your desired scan types like AI, Plagiarism, Content Optimization, Readability, Grammar OR Fact checker to scan your text against.
Step 3
Click Scan
Click on the Scan button and get scores for each scan types with detailed explanations and sentence highlights wherever applicable.
Protect your reputation & improve your content quality by accurately detecting plagiarised content and artificially generated text.
See our pricing????Founder, CEO
Kityo Martin
ClickingPublish.com
At Clicking Publish, producing original, high-quality content is essential to our success. To maintain these standards, it's important that we verify the work from freelancers and outsourced writers.?Originality.ai makes this process easy for us?by providing a simple and efficient tool that ensures the content we receive meets our expectations.
How do AI detectors work?
Our internally built artificial intelligence uses supervised learning with multiple models including a modified BERT & Roberta model to predict if it is Human or AI written content. Our AI has been provided with millions of records both AI and Human text then trained to tell the difference between the two.
Can Google Detect and Penalize AI Content?
Google along with other search engines has made it clear that “Using automation -?including AI?- to generate content with the primary purpose of manipulating ranking in search results is a violation of our Spam Policies”.
Additionally we found that Google Adsense can identify AI generated text and rejected a website because of AI generated text and the March 5th 2024 Google Update targeted AI Spam sites.
Do AI Detectors Work and Can ChatGPT Be Detected??
Yes,?Chat GPT?generated content along with most LLM’s (Gemini Pro, GPT-4, GPT-4o, Claude 3.5, Llama 3.1 etc) can be detected at a high rate of accuracy. Our ChatGPT plagiarism checker accurately detects ChatGPT-generated text. They are not perfect and do have some false-positives. An AI detector does “work” depending on the level of accuracy, precision and recall you require.
What Else Does Originality.ai Check?
Our complete content scanner provides a content quality-checking tool. Including AI Detection, Plagiarism Checking, Readability Checker, Fact Checking, Grammar and Spelling checker tool.