Originality.ai is one of the most popular AI detectors available. It can check for AI content, plagiarism, optimize content, and more.
But is it really worth using?
I’ve tested it thoroughly so you don’t have to.
In this post, I’ll show you how Originality.ai works, share my honest opinion on the results, and explain how I’d use a tool like this.
Disclaimer: This article has affiliate links at no cost to you.
Key Features
Before I show you me testing Originality.ai, here are its main features:
- AI Content Detection — Checks if text was written by AI.
- Plagiarism Detection — Looks for duplicate content across the web.
- Readability Checker — Rates how easy the content is to read and suggests improvements.
- Grammar Checker — Spots grammar issues and gives corrections.
- Content Optimizer — Analyzes content and gives SEO tips to help it rank on Google.
- Fact Checker — Checks if the text contains accurate information based on online sources.
Now, let’s dive into my experience using it.
My Experience
Here’s what I found when using Originality.ai and the results I got.
First Use
Originality.ai is simple to use. Just sign up, and you can start checking your content right away.
The dashboard looks like this:
Click the “Detect AI Content” and you’ll see this view:
All you have to do is copy-paste your text here, choose an AI feature, and let it work.
Here’s me using the features, the results I got, and what I think about each one.
#1 AI Content Detector
The most used option is the AI detection feature. To check your text, just click the AI box on the left.
Copy-paste the text to this view.
Hit “Scan”.
For example, this is what I got when I had Originality check my article written with ChatGPT:
Wow! A full 100% AI-written score. That’s not going to trick anyone!
But is this just a one-time thing, or does it always get it right? Let’s test it with more samples.
I have three AI-written texts and three human-written texts to check.
AI text sample 1:
That one is also 100% AI-written. Originality.ai got it right.
AI text sample 2:
Originality got this one right as well. It shows 100% AI-written, and that’s correct.
AI sample 3:
That’s three out of three correct.
Now let’s check if it can also tell human-written text from AI.
Human text sample 1:
It shows 96% human-written, meaning it thinks the text was written entirely by a human.
Human text sample 2:
Oh, it missed that one. It says the text is entirely AI-written, even though I wrote it myself. But I’ll give it some slack since the text is really short. Short texts are harder to judge.
Let’s try a longer one.
Human text sample 3:
Exactly.
Let’s try one more. This time, I’m using a blog post I wrote myself, nearly 1,000 words long.
As you can see, it had no trouble recognizing that this was human-written.
The longer the post, the better this tool works.
It actually makes sense if you think about it.
For example, if a document just says “Milk,” can you tell if it was written by AI? Probably not.
Or if it says, “I drank milk yesterday during breakfast,” is that AI or human? Still impossible to tell.
But the more words you add, the more patterns show up, which makes it easier to detect.
That’s why Originality.ai has a 100-word minimum. From my tests, I’d recommend using samples with hundreds of words for better accuracy.
I’d say this feature is very accurate, though not perfect. Sometimes it can mistakenly label human-written text as AI. Still, the results usually line up with reality, so it gives a pretty good idea of what’s AI and what’s not.
#2 Plagiarism Detector
The next popular feature in Originality is the plagiarism checker.
To use it, just copy and paste your text, then select “Plagiarism check” from the boxes below the scores.
Then click “Scan” to see the results.
For example, I copied a chapter from my blog post into the tool to check its score.
It showed an 80% match, meaning the tool found this text online, just as expected. I published this blog post a while ago, so it’s already on the internet, and the tool picked that up.
Next, I asked ChatGPT to rewrite the text in its own words and ran the AI plagiarism checker again:
This time, it only showed an 11% score, meaning the tool thinks it’s original—and it really is, now that I’ve rewritten it.
One thing to remember is that it’s almost impossible to create 100% original content.
If your text says, “I drank milk yesterday,” there’s a good chance someone else has written something similar online.
That’s why almost every piece of content will show some level of “plagiarism.”
The closer the score is to 0, the better. Even completely original content usually shows around 10%, so keep that in mind.
Also, don’t forget to check the sources it flagged. You can do this by scrolling to “Matched Websites” on the right-hand side of the report.
If you click on one of the matches, it will show which parts of your text come from that source.
For example, in my post, it shows that I copied this sentence from another site:
A short sentence like this isn’t a problem if it’s the only thing marked as “plagiarized.”
Use common sense here. If the score is low and a few phrases or sentences show up as copied, that’s usually fine. It’s just a coincidence that a short sentence exists elsewhere.
But if the plagiarism score goes over 15–20%, that’s when you might need to pay attention.
By looking at the “Matching Websites” report, you can get a clear idea of whether the content was copied from those sites.
#3 Content Optimizer
Next, let’s look at the content optimization feature. This gives you tips on how to improve your blog posts for your readers.
To use it, just check the “Content optimization” box.
Type in the keyword you want to rank for and the domain where your content is published.
Originality will then give you a content optimization score from 0 to 100%.
First, it shows you some basic information.
Here’s the fun part. The AI will give you ideas to improve your content.
For example, these are some suggestions I got for my sample post:
Look at that! It suggests adding a clear comparison section, removing generic phrases, and other tips that help make the post stronger. Better content usually ranks higher on Google.
It also gives you a list of competing posts.
This not only shows you the Google results but also their content scores.
For example, the #1 result in the list above has a score of just 13%.
That means quality doesn’t always matter. A low-quality post can still rank #1. This helps you figure out how strong your own post needs to be. If a 20% score is enough, why spend 10 hours on it when you can get away with less?
SEO side note: Right now, Google results are messy. Even in competitive topics, you often see scores of 10–20%. Domain authority seems to matter more than content quality. Only long-established sites with big teams, millions of references, and hundreds of thousands of posts dominate.
Finally, the content optimization feature also gives you a list of keywords to include in your content.
This gives you ideas for sub-topics to cover in your content.
That doesn’t mean you should force these keywords in. They’re just related ideas, and some are worth including.
If you’ve read my content before, you know I don’t focus on keyword optimization. Write for humans, not robots.
That said, it’s easy to forget important points. This is where Originality’s content optimization is helpful—it suggests things to add to your content.
#4 Readability Checker
Next, there’s another helpful feature called “Readability.” It checks how easy your blog post is to read.
To use it, copy and paste your text into Originality and check the “Readability” box on the right.
It gives you a score showing how easy your content is to read.
As I’ve mentioned before, readability means accessibility. If your content is easy for everyone to read, it has the best chance of performing well.
Make sure your text is as clear as possible. You can check the info boxes to see what the scores mean.
For example, here’s what the Flesch-Kincaid reading ease score shows:
I like that it also shows how your score compares to other websites on Google.
The best part is that it doesn’t just give you the scores. It also shows what you can improve.
For example, here it suggests making the sentence shorter.
Here, it’s highlighting various mistakes, extra words, and similar issues.
I’m not saying you should make every change. It’s like what I say about tools like Grammarly or the Hemingway App.
If you fix everything, you lose your own style.
But I do recommend keeping sentences short and cutting unnecessary filler words.
The best approach is to aim for a high score without overdoing it. Just fix the obvious and easy issues.
#5 Grammar Checker
Like readability, you can also check grammar with Originality.
Just copy and paste your text, check the “Grammar” box on the right, and click “Scan.”
It shows the grammar mistakes and typos in your text.
To write like a pro, try to fix all the spelling and grammar mistakes in your text.
I like tools like this because I can focus on writing while it catches the small errors.
#6 Fact Checker
Last but not least, Originality also has a fact-checker feature. To use it, copy and paste your text and check the “Fact check” box.
For example, here I have a text that claims Donald Trump is a soccer player.
The tool quickly flags it as false.
It even shows where the content strays from the truth.
One thing I’ve noticed is that the more specific the topic, the less accurate the fact-checker becomes.
For example, I wrote that I am a popular figure on television:
The fact-checker couldn’t confirm this because there isn’t enough information about me online.
However, if I ask ChatGPT, it can give an answer right away based on what it finds about me online:
To be honest, this feature isn’t very practical on its own. It works for topics with lots of information online, but struggles with specific details.
That said, it doesn’t hurt to leave it on when running scans along with the other features.
Pros
- Easy to use — Just sign up and copy-paste your text.
- Fast — Get results in a few seconds.
- Reliable — From my tests, it gives dependable results, especially with longer text. It’s not perfect, but it points you in the right direction.
- AI features — More than just an AI detector. You can check for plagiarism, optimize content, fix grammar, and more.
- Content suggestions — I like the content optimizer. It gives helpful suggestions, not just keywords to insert, helping you write a stronger article.
Cons
Paralysis by analysis — If you focus on every score and metric, you’ll always find something to change. You don’t need to follow every suggestion.
Uncertainty — No AI detector is 100% accurate, and Originality is no exception. The numbers and metrics are for reference and can sometimes be off.
Final Verdict
I really like Originality.ai.
At first, I thought it was just an AI detector. But after using it, I’d call it more of an AI content optimization platform.
It detects AI, checks for plagiarism, helps you write reader-friendly SEO content, and even lets you analyze competitors in search results.
That said, there’s one big misconception I need to clear up: to rank on Google, your content has to be good. Passing an AI detector doesn’t matter. Your content could still be spam, and that’s what Google cares about.
To rank well, you need to say something unique. Pick a low-competition niche and become an expert in it.
For example, if you write a review, you should buy and test the product yourself. Add images of you using it. Otherwise, it’s just repeating what’s already out there. No matter how well it scores with AI checks, it won’t help.
Still, I find Originality very practical for optimizing content for humans. It also helps spot if freelancers use AI or if content is copied.
It’s definitely worth checking out.