Originality.ai’s patented, real-time, and accurate Fact Checker identifies false facts and helps you avoid AI hallucinations. Publish content with integrity.
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A complete suite of QA/QC products
In addition to our Fact Checker feature listed on this page we have a complete suite of AI tools to help Editors including AI Checking, Plagiarism Checking, Readability Checking & Grammar & Spelling Checking.
Fact Checker ›
Use our fact checking aid to help ensure your content is factually correct.
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.
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.
Readability Checker ›
Optimize readability for your target audience to communicate clearly.
Advanced, Comprehensive, and Precise
Fact-checking is time-intensive, yet essential. Misinformation, potential false facts, and AI errors can have huge consequences; just consider the Deloitte scandal and the AI book list scandal. Proper fact-checking means protecting the authenticity of your work as a writer, editor, student, or teacher.

Marketers, Writers & Publishers

Teachers & Students

Agencies & Enterprise

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.
How accurate is the Fact-checker?
We completed a fact checker accuracy study looking at the accuracy of our Fact Checking aid. The results show an overall 86.69% accuracy. Originality.ai closely tied GPT-5 for accuracy, with a slight lead (Originality = 86.69% accuracy vs. GPT-5 = 86.67%), while decisively beating GPT-4o. However, the accuracy still means that the tool should be used as a fact checking aid and not viewed as the final source of truth.
What kinds of facts can I check?
Nearly everything! The fact has to be verifiable though, so for example you can’t check “Chocolate ice cream is the best flavour.” as this is an opinion which cannot be peer verified. Also, for now we are steering clear of anything political.
Is it multilingual?
In short, no. But watch this space for updates in the coming months!
What is the source coverage for the Fact Checker and does it provide source citations?
The Originality.ai Fact Checker has at least 1 source for every identified fact, each with a url, and now a title and date (if relevant). Plus, you can now generate a quick copy-pasteable citation in the style of your choice (APA, MLA, Chicago Notes and Bibliography, IEEE) for each individual search result source used by the Fact Scanner in its evaluation. Additionally, users can now generate a .docx or .txt file containing all the sources the Fact Scanner used in its scan.
How does the Fact Checker work?
In short the checker goes through the content per sentence, fetches relevant URLs, and uses their content and your article to verify your fact.
Can I check recent information?
Yes. Our fact-checker is internet-connected, allowing us to deliver results based on the latest information.
What sources does the fact-checker use to verify information?
The Originality.ai Fact Checker has at least 1 source for every identified fact, each with a url, and now a title and date (if relevant). Plus, you can now generate a quick copy-pasteable citation in the style of your choice (APA, MLA, Chicago Notes and Bibliography, IEEE) for each individual search result source used by the Fact Scanner in its evaluation. Additionally, users can now generate a PDF bibliography of citations with all of the sources from the fact checking scan.
Does the fact-checker store or share the information I input?
We value user privacy and ensure data is handled with utmost security. All information concerning our privacy policy can be found here - https://originality.ai/privacy-policy
How is the accuracy of the fact-checker measured?
We conducted an updated 2025 study on our fact checker’s accuracy. To find out how we measure fact checker accuracy, what datasets we used to evaluate the tool, and how Originality.ai compares to GPT-4o and GPT-5 read the full study.
Are there any costs associated with using the fact-checker?
We offer various pricing options to suit different needs. All information concerning our pricing can be found here https://originality.ai
Can I submit feedback or corrections to the fact-checker?
Yes absolutely! We always love to hear ways in which we can improve, contact our exceptional support team to provide feedback.