AI Detector Free AI Content Detector (for ChatGPT & More)
A free AI detector can spot the use of AI-generated content in any body of text. Whether you’re checking a homework assignment, college essay, AI written blog post, or freelance article, you wanna be sure there’s no ChatGPT or other AI-generated content causing you challenges. My free AI content detector uses advanced algorithms and the power of artificial intelligence to check for sure-fire giveaways of AI writing.
This AI Detector Will Let You Know Whether Any Piece of Text is AI-Generated (Works for ChatGPT, Google Bard, Bing Chat, and More)
AI-generated content can be really useful in many contexts. It’s a great way to come up with product descriptions quickly for an online store, for instance, and it can be a huge time-saver when writing for a blog or email newsletter.
But there are some situations where you don’t want to use AI content. And that’s when AI detectors come in. An AI detector is a clever piece of software that uses special algorithms to closely examine a piece of text, looking for hallmarks that it’s written by artificial intelligence rather than being human-written.
Perhaps you’re a teacher, marking high school essays. Or maybe you’re a college professor, reading assignments. You want your students’ work to be 100% their own—and the use of AI is tantamount to plagiarism. Maybe one essay seems a little stilted and doesn’t “sound” like your student’s usual writing. Simply run the essay, or an extract from it, through the AI content detector and you’ll instantly get a score to tell you whether or not it’s been written by an AI.
This AI detector tool isn’t just for educators, of course. There are plenty of other situations where you might want to use it. Perhaps you’ve commissioned an article for your website and your freelance writer or guest poster has delivered it super-fast—but the content seems a little bland and doesn’t really match your corporate voice. It’s not a piece you’d be happy to publish on your blog. You’re suspicious that the writer has used AI to write it. Running the piece through the AI detector will give you clear evidence of this.
What is an AI Detector (ChatGPT Detector)?
An AI detector is a piece of software that analyzes text and tells you how likely it is that the text has been written by an artificial intelligence. AI content detectors give a percentage score (or score out of 100) to let you know how much text is probably AI-generated instead of human-written.
AI detectors look for typical hallmarks of AI writing, particularly “perplexity” and “burstiness”. It’s rare for them to come up with false positives (thinking that a text is written by a machine when it really is human-written).
Perplexity is a measure of how unpredictable a text is—AI language models produce texts with low perplexity. They make sense and read smoothly, and they don’t have typos, but they’re not as creative as human-written texts. Burstiness is a measure of variation in sentence structure and length. Human-written text varies more than AI text.
Plagiarism detection tools won’t usually spot AI text. That’s because these tools work by comparing text to other content (e.g. published books and other students’ essays). AI content won’t be identical to anything else.
How to Use the AI Detector to Check for AI-Generated Content
It’s incredibly easy to use this AI detector, even if you’re completely new to AI and feel a bit daunted by this fast-moving technology. Here’s what to do, step by step:
Run as Much Text as Possible Through the Tool
You can use the AI detector to analyze up to XXXX [words/characters] of text—and you’ll want to enter as much text as you can. That way, you’ll get a more accurate score. A single, predictable sentence could be produced by a human writer or an AI.
Simply copy the text from the document you’re checking, then paste that text into the input box for the AI detector.
If you don’t have an article or essay that you’re checking, you could use my free article writer tool to generate a sample of text (around 500 words) on any topic you want, such as one of these essay topics. Then, use that to try out the tool.
Check the Percentage Score
Once the tool has finished analyzing your text, you’ll see a percentage score (a score out of 100). The higher this score, the more likely it is that the text is human-written. A low score means that the text is more likely to be written by an AI.
Alongside the score, you’ll see a written description of how likely (or not) it is that your text is human vs AI.
(Optional) Adjust Your Text and Rerun the AI Detector
Depending on your purposes, you may want to use the AI detector tool to help you edit your text and make it more unique and creative. Perhaps you’ve written a blog post with the help of AI, for instance, and you want to make sure it sounds engaging and interesting to readers—you want to infuse it with your own unique voice.
Go ahead and edit your text, using the bonus checklist below, to make it more human-sounding. Then, you can run it through the tool again. This time, you should find that you get a much higher score.
Bonus: My AI Editing Checklist
There’s nothing wrong with using AI-generated content—in the right context and in the right way. I’ve hugely improved my blogging process using AI tools. But I always want to include a piece of me in everything I publish, so I see what the AI writes as simply a first draft.
Here’s my editing checklist for you to use too:
- Copy the article from your AI tool into Word, Google Docs, WordPress, or wherever you want to write/edit
- Double-check any facts, figures, or statistics—AI sometimes comes up with very plausible-sounding ones that simply aren’t accurate!
- Look for anything missing, like a key point that you’d like to get across to readers
- Flesh out any sections that seem too brief, by giving more details or adding extra tips
- Cut down any parts that are too wordy, especially if they’re too basic or obvious for your target audience
- Include examples from your own life and experience
- Add in your own thoughts, ideas, and opinions about the subject
- Work your voice and style into the piece, changing phrases that don’t sound like you
- Look up citations and references for any facts or quotes in the piece
- (Bloggers/Website Owners) Optimize the AI content for SEO (search engine optimization), using key SEO principles for blogs
The Features of this Free AI Detector
Let’s take a closer look at how the AI content detector works. It might look simple on the surface … but there’s a lot going on beneath the hood.
Text Input (Tool Checks for AI Hallmarks)
You can put any amount of text into the free AI detector, up to XXXX [words/characters]. The more text you use, the better the tool will work. So, I recommend pasting in the whole of the essay, article, or blog post that you want to test for human vs AI content. (If it’s a really long piece, don’t worry, the tool will automatically cut it off when you reach the word limit.)
The AI detector is completely free for unlimited use, so if you want to check a really long piece, that’s no problem. Just break it up into shorter sections and run each one through the AI tool in turn.
Percentage Score (How Likely Is it That AI Wrote the Text?)
Once the tool has analyzed the text you gave it, you’ll see a percentage score (a number out of 100). The higher this number is, the more likely it is that the text was written by a human.
In general, here’s how those numbers break down:
- Score of 100: Human-written (or written by an AI and heavily edited by a human—as in editing every single sentence)
- Score of 80–99: Highly likely to be human written
- Score of 60–79: More likely to be written by a human than by an AI, though potentially some sections are AI-written
- Score of 40–59: Might be written by a human or by an AI, possibly with AI text mixed in with human-written text
- Score of 20–39: Probably written by an AI
- Score below 19: Almost certainly written by an AI
So how exactly does this tool figure out whether the text was written by a human or by an artificial intelligence?
Essentially, it uses the exact same language prediction models that AI uses and asks itself, “Would I write like this?” If it would, then it knows the text is AI-generated. So if the sentences are very predictable and conventional, they’re all the same sort of length, and every single word is spelled correctly … then chances are, the piece is AI-written.
AI Detector Tool FAQs (Frequently Asked Questions)
Here are some of the most common questions I get from readers about AI detection these days.
How can software detect the use of AI-generated text?
AI writing tools like ChatGPT, Bard, and Bing Chat are all trained on huge datasets. AI detectors are trained on the same datasets, meaning they know what sentences AI tools are likely to come up with. In particular, AI detection software measures the amount of “perplexity” and “burstiness” in a text.
Perplexity is all about how unpredictable the text is. You could also see this as a measure of the text’s creativity. The more unpredictable, the more likely it is that the text was created by a human—not by AI software.
Burstiness looks at how much the sentence structure and sentence length vary. AI models typically produce sentences that are all a similar length, whereas human-written content normally has a mix of shorter and longer sentences.
When is the use of AI writing appropriate?
There are lots of reasons why you might want to use AI to help you write something—and in many cases, using AI is perfectly appropriate. Let’s say you’re writing lots of functional content for your website, like product descriptions. AI can handle those for you, potentially saving you a lot of time.
It’s also fine to use AI when you want an outline or rough draft for something that you’re creating for your own use, like a blog post to publish on your own blog, or an email to send to a group of people.
Whatever you’re using AI for, you should always fact-check the results. I also strongly recommend editing your AI-generated text so that it uses your own voice, style, and personal experiences or examples. That way, it’s uniquely yours—and it’ll be much more engaging to your readers.
When is the use of AI writing not appropriate?
You shouldn’t use AI writing at all if you’re working on a piece of writing that’s going to be assessed in some way. Mostly, that applies to academic writing: you shouldn’t use AI to draft your essay (and you shouldn’t even use it for an essay outline, as the structure of your essay is supposed to be your own work, too). Using AI tools to write your essay could be viewed as a form of plagiarism by your school, college, or university.
Not sure if it’s OK to use AI? Here’s a quick rule of thumb. If your content needs to pass a plagiarism checker, it also needs to be human-written and not get flagged by an AI detection model.
You also shouldn’t use AI to write something that you’re entering for a competition (unless the competition is specifically for AI content generation, of course).
If you’re a freelance writer, it might be appropriate to use AI tools to speed up the outlining or drafting process—but it would be a good idea to check that your client is happy with this first. Similarly, if you’re employed as a writer, talk to your supervisor before using AI to help you write.
Is this free AI detector tool suitable for beginners?
Yes. You can use this AI detector tool even if you have no experience at all of AI writing. I think you’ll get more out of it, though, if you’ve seen what generative AI tools are capable of. I’ve got a whole bunch of free AI tools for you to try, and I’d recommend using the article writer to have a go at creating your own AI texts.
The AI detector tool is completely free for unlimited use. If you’re not sure you’ve got the right result the first time around (perhaps you only used a small sample of text, for instance), then you can just run the tool again.
How can I edit my text to avoid AI content detection?
Let’s say you’ve produced a piece of text using AI software (like ChatGPT, Bard, Bing Chat, Jasper, or models based on the GPT-3, GPT-3.5, or GPT-4 models). You want to make sure your text doesn’t read, to humans or to AI detectors, as though it’s been written by an AI.
You can use my AI editing checklist (above) to edit your piece—this should help you to make it sound more natural and more like you. Then, simply run your edited piece through the AI content detection tool again, and see what score you get. If the AI detector still thinks it’s been written by a machine, you’ll want to do some more editing.
Important: I strongly advise against using AI if the person reviewing your text (e.g. your professor, editor, client, boss) wouldn’t be happy about knowing you used it. Even if you edit your text extensively, you want to be able to be honest about the writing process.
Why is the AI detector free?
When I started out in online business, a lot of content creation and SEO (search engine optimization) tools cost way more than I can afford. Now that I’ve built a successful online business, I’m thrilled to be able to offer free tools as a gift to my readers. There are no strings attached! No credit card details, email address, or anything else needed.
AI has so much potential, but it can also be used in negative ways—to cheat on assignments or to pass off a few minutes’ work typing in a prompt and copy-and-pasting an answer as a full day’s writing. Along with all my other AI tools, I wanted this AI text detector to promote the use of AI for the right purposes.
What other free AI tools do you have?
If you’re interested in using the power of AI to grow a business or build an online platform, then you’ll want to check out my other free tools. These include the domain name generator, the keyword research tool, my blog post ideas tool, and my blog title generator. If you want to produce AI-written content, take a look at my AI article writer and my AI paragraph rewriter. All of those are completely free.
I also have a list of the best AI writing tools that takes a look at a whole range of popular AI tools, as well as a list of the best AI tools in general.
My RightBlogger software includes full versions of all these tools plus many more (it has 40+ different tools, covering a whole range of use cases in blogging, social media, SEO, and more). It uses OpenAI’s GPT-4 API, giving it the same deep machine learning as ChatGPT, but without you needing to type prompts into a chatbot: the tools do everything for you.
Who is this AI detector tool designed for?
We designed the AI content detector tool for anyone who wants to analyze text to see if it was written by a human or by a machine. That means it’s a great tool for educators and educational institutions to use for checking homework assignments, essays, or other work produced by students for AI-written text.
As well as educators, we had in mind a whole range of other users when creating our AI detector tool. It’s useful for bloggers (especially those working with guest posters), editors of all kinds, content creators, content marketers, and small businesses.