Originality.ai is an AI content detector and plagiarism checker built for publishers, SEO agencies and content teams. It checks if text was written by ChatGPT, Gemini, Claude and other AI models, finds plagiarism and helps fact-check content. You can run free scans, and Pro starts at $12.95 a month billed yearly.
What is Originality.ai?
Originality.ai is a popular tool for checking whether content was written by AI. It is widely used by website owners and agencies that buy content and want to make sure it is original.
Besides AI detection, it includes a plagiarism checker, fact and hallucination checker, grammar and readability tools, and a Chrome extension that can show how a Google Doc was written over time.
Originality.ai key features
AI checker
Detect content written by popular AI models.
Plagiarism checker
Find copied content across the web.
Fact checking
Spot possible errors and AI hallucinations.
Readability
Check how easy your content is to read.
Grammar checker
Fix grammar and spelling mistakes.
Content quality score
Get an overall score for your content.
Chrome extension
Check Google Docs and see writing history.
Bulk scans
Scan many pages or files at once on Pro.
API
Add AI detection to your own tools.
Originality.ai pricing plans (2026)
Originality.ai uses credits. One credit scans 100 words for AI, and plagiarism checks use extra credits.
Free
Limited free scans to try the AI checker.
Pro
2,000 credits a month, bulk scans and reports. $14.95 billed monthly.
Enterprise
15,000 credits a month, API access and priority support. $179 billed monthly.
Prices checked in October 2026 (USD, billed yearly). Pay-as-you-go credits are also available. AI detection is not 100% accurate. Confirm on the official Originality.ai pricing page.
How to use Originality.ai
- 1
Go to originality.ai and paste your text into the AI checker.
- 2
Run a free scan to see the AI score.
- 3
Sign up to check plagiarism and get full reports.
- 4
Install the Chrome extension to check Google Docs.
- 5
Use bulk scans or the API for many pages.
Who should use Originality.ai?
Publishers
Check content from freelance writers.
SEO agencies
Make sure client content is original.
Educators
Review student work for AI use.
Writers
Prove your writing is your own.
Pros and cons
What we like
- Strong AI detection accuracy in tests
- Plagiarism and fact checking in one tool
- Affordable Pro plan
- Useful Chrome extension
Watch out for
- No AI detector is 100% accurate
- False positives can happen
- Credits run out with long content
- Mainly built for English content
Best Originality.ai alternatives
Originality.ai is one of the best AI detectors for publishers and SEO teams. Use it as a strong signal, not final proof, and combine its scores with human review.
Originality.ai FAQs
Is Originality.ai free?
Originality.ai offers limited free scans. Pro costs $12.95/month billed yearly.
How accurate is Originality.ai?
It performs well in many tests, but no AI detector is 100% accurate and false positives can happen.
What does 1 credit cover?
One credit scans 100 words for AI. Combined AI and plagiarism scans use more credits.
Can Originality.ai detect ChatGPT?
Yes. It is designed to detect text from ChatGPT, Gemini, Claude and other models.
Does Originality.ai check plagiarism?
Yes. It includes a plagiarism checker for web content.
Who makes Originality.ai?
Originality.ai was launched in 2022 and is based in Canada.
