Anyone having any particularly spectacular success in using any of the AI detector tools in reliably detecting AI writing? Would be nice to find a good reliable list of options that's not just a marketing blurb about services and options...

Top answer

1 of 5

I've had some great experiences with various AI content detectors, but I have to give a shoutout to ZongaDetect. It's been remarkably reliable in identifying AI-generated text and plagiarism. What I appreciate most is its user-friendly interface and accuracy. It feels like it's built for real users rather than just marketing. If you're looking for a solid option, I highly recommend checking it out!

2 of 5

There are none. Period.

reddit.com › r/writingwithai › best ai checker – which one actually works?

r/WritingWithAI on Reddit: Best AI Checker – Which One Actually Works?

February 12, 2025 -

I’ve tested several AI content detection tools extensively, evaluating them based on accuracy, ease of use, reliability, and additional features. Some tools are better suited for academic purposes, while others work well for content creators and businesses. Here’s my detailed breakdown:

🔍 1. PerfectEssayWriter.ai – Most Accurate & Detailed Analysis

✅ Why I Recommend It:

Highly accurate in detecting AI-generated text, including content from ChatGPT, GPT-4, and other AI models.
Provides detailed breakdowns of flagged content, making it easier to understand why something was marked as AI-generated.
Ideal for students, educators, and professionals who need a reliable AI checker.

📝 2. MyEssayWriter.ai – User-Friendly & Effective

✅ Why I Recommend It:

One of the most user-friendly AI detectors I’ve tested.
Provides clear AI detection reports with easy-to-read results.
Works well for academic writing, helping students and teachers verify originality.

🎓 3. GPTZero – Best for Educators & Researchers

✅ Why I Recommend It:

Designed specifically for teachers and researchers to detect AI-generated essays.
Provides a perplexity and burstiness score to assess writing patterns.
Works well but may flag some human-written text incorrectly.

🏆 4. Originality.ai – Best for Content Creators & Businesses

✅ Why I Recommend It:

Detects AI-generated text and checks for plagiarism in one scan.
Great for bloggers, SEO writers, and content marketers.
Paid tool, but offers detailed insights into AI vs. human-written content.

🤖 5. Copyleaks AI Detector – Decent, But Inconsistent

✅ Why I Recommend It:

Can detect AI-generated text, including ChatGPT and Bard outputs.
Provides a sentence-level analysis of AI probability.
However, results can be inconsistent—sometimes over-detects AI content.

✍️ 6. Writer.com AI Content Detector – Quick, But Less Reliable

✅ Why I Recommend It:

Great for quick AI detection scans.
Simple and easy-to-use interface.
Not as accurate as other tools, so I wouldn’t rely on it alone.

Final Thoughts

If you need the most accurate AI content detection tool, I highly recommend PerfectEssayWriter.ai for its detailed analysis and reliability. MyEssayWriter.ai is another great option if you prefer a user-friendly experience.

Which AI checker do you use? Have you found any that work better? Let’s discuss below! 👇

Top answer

1 of 31

I've utilized a pair of these (GPTZero was inconsistent for me), but truly, AI detectors can only proceed so far, particularly when the importance is great such as with scholarly material. I once had a document flagged simply because it "seemed too polished". Following that disarray, I quit taking chances and began getting assistance from LeoEssays . They genuinely compose everything anew, so I have never encountered problems with AI identification methods. The advantage? It is organized correctly, novel, and does not read as though it originated from an automated system. If you aim to bypass AI alerts yet still obtain excellent output, they represent a much more secure option than attempting to expertly manipulate the detectors.

2 of 31

My real writing gets flagged so I have to use ai to create “100% human content”

reddit.com › r/datarecoveryhelp › ai detector

r/DataRecoveryHelp on Reddit: AI Detector

June 16, 2025 -

So, I’ve got a lot of positive feedback about my recent post Humanize AI. Reddit users seem to enjoy reading the truth and not just promo. Besides, that’s my actual hobby - apart from data recovery. That’s why I decided to write a decent tutorial about AI writing detectors (AI Content Checkers) and review the best ones like: GPTZero, ZeroGPT, Turnitin AI Checker, Grammarly AI Checker, Quillbot AI Checker, Scribbr AI Detector, and others. We’ll do a real test to see if they’re fake or not and whether it’s possible to bypass AI detectors nowadays. I even generated a ChatGPT image using the latest model for this post. Let’s go!

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1 of 5

Here are the 11 best and most popular (not sure best) AI checkers I want to test: (How did I check popularity? I simply used SEO tools to estimate their traffic and sorted them by that. If any AI detectors are missing here, it’s because they don’t work, users don’t like them, or they’re not investing in marketing, haha, so… sorry!) If you want to avoid high detection and humanize ai content - read my tutorial How to Humanize AI & Best AI humanizers Best AI Humanizers with proofs reviewed here: https://www.reddit.com/r/DataRecoveryHelp/comments/1oqwdib/best_ai_humanizer 🎁 If you need to Humanize AI right away try this: https://aihumanizer.net - 100% Free Ai humanizer (nice human score in ZeroGPT & GPTZero, simple language) https://www.zerogpt.com/ - ZeroGPT Checker (My top choice. Easy to fool when you rewrite content in a conversational style.) https://gptzero.me/ - GPTZero AI Detector (Very inconsistent results. Since the September update it has become unstable - some texts score 0%, others 100% AI, with no clear logic.) https://quillbot.com/ai-content-detector - Quillbot AI Checker (Works fairly well. Can be fooled by using natural language and avoiding a rigid, formal tone.) https://www.scribbr.com/ai-detector/ - Scribbr AI Detector (Just an iframe of Quillbot’s checker.) https://www.grammarly.com/ai-detector - Grammarly AI Checker (Very weak detector, easy to trick.) Less popular AI detectors: https://originality.ai/ai-checker Originality AI Checker (Feels scammy. Almost always shows 100% AI, but if you add intentional errors it marks them as human. Very odd.) https://undetectable.ai/ Undetectable AI Detector https://decopy.ai/ai-detector/ Decopy AI Detector https://notegpt.io/ai-detector NoteGPT AI Detector https://copyleaks.com/ai-content-detector Copyleaks AI Detector https://gowinston.ai/ Winston AI Detector I would not review each pros and cons and plans intentionally. Who cares? You can look yourself. I will only get scores before and after and share with you. Reddit allows you to attach only one image per post, so, sorry! What AI detector do colleges & students use? It’s definitely Turnitin AI Checker. There’s no free way to check it without registration. I tried, and it asked whether I’m a student, instructor, or teaching assistant. I didn’t want to lie, so I quit. But I’ve read a lot of Reddit discussions, and both students and teachers give the same answer to the question: “How accurate is Turnitin AI Detector?” The simple answer: Not accurate. Haha! Lots of false positives and easy to manipulate with special prompts. Ok let’s do a simple test of the rest popular best AI detectors and checkers: For this test, I’ll generate a simple essay titled “What is an AI Detector and How Do They Work?” (500 words). Then I’ll show you the score before and after some basic humanization using simple prompts.I’m intentionally skipping web-based AI humanizer tools because I already covered those in this tutorial.I’ll use ChatGPT 4.1 Mini – fast and cheap. I assume a lot of writers and students might be using this specific model.

2 of 5

What is the most accurate AI detector & how does an AI detector work? I have a short answer for you already: not even close to accurate! Because there’s no single algorithm that can make a text 100% AI or 100% human. It’s all about patterns. But those patterns are often what real people use too. Besides, you can easily create a prompt that breaks the patterns. OK, let me give you a basic understanding of how an AI detector actually works: Think of it this way - when an AI writes, it tends to be super predictable and efficient with its word choices. It’s like a really smart, but sometimes boring, student who always picks the most statistically probable answer. Humans, on the other hand, are messy! We use quirky phrasing, vary our sentence lengths, and sometimes throw in unexpected words or even make “mistakes” that an AI wouldn’t. AI Detectors with Their Own Model AI detectors look for these differences: Perplexity: How "surprising" the next word is. Humans tend to have higher perplexity because we're less predictable. Burstiness: The variation in sentence length and structure. Human writing is like a rollercoaster. AI writing can be more like a flat road. Repetition: AIs might repeat phrases or structures more often. Stylometry: They analyze things like average sentence length, vocabulary richness, and even punctuation habits. They then feed all this data into a machine learning model, which has been trained to recognize the "fingerprints" of AI versus human writing. It spits out a score indicating the likelihood of AI involvement. AI Checkers Using Other Model APIs Some fake AI detectors don’t have their own model at all. All they do is ask another AI whether the text looks like it was written by AI or not. It’s a very expensive method (because you pay API credits every time) but literally very cheap to develop. All you have to do is choose the cheapest API and get results instantly. But here’s the catch - I tried this tactic, and it gave me about +-50% accuracy, haha! That’s crazy! That’s why I’m sure you’ve noticed the same content sometimes gives you a different score over and over again. Here’s another example: some AI detectors use their own basic scripts - like checking whether the content has a closed em dash or not, or if there’s phrasing like “dive in,” “in the digital era,” or “digital landscape.” If they find these words or combinations, they simply mark the content as 90% AI. Stupid? Oh yes! Are AI Detectors Reliable? I’ve tested a bunch of AI detectors, and here’s the deal: none are 100% reliable, not even 85%. Even the best ones only hit about 70–85% accuracy – and that’s in perfect conditions. Free tools often do worse. False Alarms Happen Sometimes, detectors flag real human writing as AI. This is especially true for non-native English speakers or overly structured writing. I’ve seen stuff like the U.S. Constitution get marked as AI! They Miss Stuff Too On the flip side, newer AI like GPT-4.1 can often slip by undetected, especially if the text has been edited a bit. So yeah, AI-written content can fool detectors more than you’d expect.

reddit.com › r/digitalmarketing › which is best ai content detector?

r/DigitalMarketing on Reddit: Which is best AI Content detector?

January 20, 2024 -

Hi guys, I need to check multiple articles of freelance writer that we have hired.

Please guide me with best AI content detectors.

Top answer

1 of 25

Walter Writes AI is kinda my go-to lately tbh… gptzero’s probably the most popular one but it throws a lot of false flags sometimes, same with copyleaks. fwiw i’ve run stuff through turnitin, then cleaned it up using the walterwrites humanizer and it slid past pretty clean. honestly feels like one of the best ai writing assistants if you’re trying to make stuff sound more natural.

2 of 25

It doesn't exist - any such tool out there claiming to do AI detection is outright lying.

reddit.com › r/phd › best ai detector ? most reliable one?

r/PhD on Reddit: Best AI detector ? Most reliable one?

March 6, 2025 -

So I am wrapping my dissertation and want to make sure it is not flagged as AI. I have gotten in trouble before (although it was my own mistake and luckily not a part of my main project), however, I am very cautious and careful now and not using AI. However, even things like Grammarly and Word editing can be AI flagged now.

Has anyone tried a reliable detector and can suggest any?

Top answer

1 of 18

I like Proofademic AI, it is the best AI detector and is quite accurate and most reliable one, I've ever used.

2 of 18

There is no such thing as a "reliable" detector.

reddit.com › r/artificialinteligence › what is a trustworthy ai-detection tool?

r/ArtificialInteligence on Reddit: What is a trustworthy AI-detection tool?

May 5, 2024 -

I am currently writing my bachelors thesis and discovered earlier today that one of my colleages had used Generative AI systems to produce large pieces of text. I discovered this by using available online AI-detection tools. The colleage in question says that everything will be rewritten but I want to make sure. Our university has put forward strict rules about this and using AI in this way will be considered plagiarism. Therefore, my question: What tool will give me the best detection of AI generated text? Are these free online tools to be trusted or is there a certain degree of error?

Top answer

1 of 5

There is none, they are all scams. It is not possible to detect AI generated text. Please do some research. Also, please do not use AI to get your college degree.... https://www.google.com/search?q=ai+detectors+are+scams

2 of 5

There is no foolproof method of detecting ai generated content. Many of the online tools are just checking for words and phrases often used by certain ai. If you happen to use the same phrase in your text, then the detection tools will say it's ai generated. Don't trust online tools. Just accepting AI is now something people will use, and trusting people to read the generated content and alter it to be their own work is the best you can do for now.

Find elsewhere

Google Bing Mojeek

reddit.com › r/seo › is copyleaks a reliable ai content detector?

r/SEO on Reddit: Is CopyLeaks a reliable AI content detector?

September 13, 2024 -

I make all my content writers ensure their content passes AI detection using CopyLeaks... becausse I know all of them will try to take advantage of AI to write the bulk of their content...

Now, these guys are now all telling me that the tool sucks and that even though they rewrite entire paragraphs, their content is still flagged as AI content by this tool.

What do you guys think? Should I side with my writers and ditch this tool or should I side with CopyLeaks? :)

Top answer

1 of 7

There is no such thing as a publicly available reliable AI detector. They are all nothing but a borderline scam.

2 of 7

If this is something that you are concerned about you have much bigger problems than an AI tool that can be fooled by AI copy.

reddit.com › r/artificialinteligence › how does an ai detector work?

r/ArtificialInteligence on Reddit: How does an AI detector work?

October 2, 2024 -

I had an assignment on a persuasive essay and as per usual, I put it through like six different ai detectors, five of them detect 0% while one other (gptzero) detected 70% for some reason. Funny enough, ZeroGPT detected 0%. Sometimes I wonder if these ai detectors take these information straight outta their ass cos it's going to make me pissed if my teachers think I used ai.

Top answer

1 of 28

I think they don't work.

2 of 28

It doesn't. They're currently below coin flipping for accuracy.

reddit.com › r/localseo › best ai detection software

r/localseo on Reddit: Best AI Detection Software

May 15, 2025 -

Hi everyone!

For those of you that are using AI to generate your blog posts - would you mind sharing which AI detection software you're using to verify your content isn't getting flagged? There's a ton out there that "claim" to be the most accurate.

Top answer

1 of 5

None of them are perfect tbh, fake positives all over the place, especially with SEO-style content. You might get better results focusing on tone, something like walter writes helps make copy sound more human and less like it came straight from a template.

2 of 5

Use Rephrasy. They offer a SEO Model for exactly that use case.

reddit.com › r/askcomputerscience › does anybody else find ai content detectors to be really sketchy and misleading?

r/AskComputerScience on Reddit: Does anybody else find AI content detectors to be really sketchy and misleading?

November 23, 2022 -

So I was just working on a writing assignment today and for shits and giggles I decided to pop it into some GPT content detectors to see what they said. I do use ChatGPT all the time, but didn't for this particular assignment.

I was somewhat surprised to see that 4 out of 5 detectors that I popped my paragraph into were extremely confident that it was written by a GPT model, including one (ZeroGPT) which was 100% confident. So I started popping in previous assignments which I had written, and was surprised to see that many of them were detected as AI generated content too.

The idea that these content detectors will soon be employed by teachers around the world who don't understand how they work to levy accusations of cheating against students frankly scares the shit out of me, and its very clear that the LLCs which are publishing these tools intend for them to be used this way. I'm not even convinced that the use of AI language models should even be considered cheating in many cases.

So that brings me to the second part of what scares me, which is the irresponsible way that these tools are marketed. The first time I was introduced to many of these tools they typically called themselves "AI content detectors", which seems pretty accurate. Lately I am noticing an increase in the use of aggressive wording on some sites, and a lot more labeling the use of generative NLP tools "AI plagiarism" (this wording is used by Writeful, ZeroGPT, GPTZero). But plagiarism is stealing another person's work and passing it off as your own. How can you steal from an inanimate tool who's whole purpose is to do exactly what you have done with it? Fortunately most sites still don't use this accusatory nomenclature.

But thats a bit of a pedantic question of when the tools are appropriate to use and I would rather let people form their own opinions and draw their own lines on what constitutes plagiarism. Whats much more concerning to me is the downright misleading claims of accuracy that some of these GPT content detectors are claiming.

ZeroGPT seems to be one of the worst offenders. They are clear about positioning their tool to be used in academic circles to evaluate student's work, and state clearly that they want universities to use their tool at large scale to detect what they call "AI Plagiarism". Their website claims "we developed ZeroGPT's algorithm with an accuracy rate of text detection higher than 98%". And yet their algorithm was 100% sure that my handwritten paragraph was generated by a language model as well as misidentifying several other things I've written over the years. They call themselves "The most advanced and reliable ChatGPT detector tool".

Guys, this scares the shit out of me. Way more than AI generated content does. These kinds of misleading and downright false claims are not acceptable. Students are going to get kicked out of school because of crap like this.

Top answer

1 of 24

These "AI detectors" work by looking for high "perplexity," which is the presence of relative randomness in the text, in some relevant sense. What I've found is that "perplexity" is strongly negatively correlated with clarity. If you feed in some typical freshman English crap, they'll say it likely wasn't written by an AI, because it's confused rambling nonsense. If you feed in an Isaac Asimov science article, it's going to say an AI wrote it, because Asimov is (famously) able to write clear, coherent articles based on the organized thoughts of a powerful mind. The ability to write well is less common than it used to be, but I certainly hope we aren't headed for a future where we not only tolerate, but actually require students to write badly, in order to get past the AI detector. There's also a difference between using AI as a super-advanced version of the Microsoft Word grammar checker, and using it to actually provide the content of the assignment. The latter is plagiarism (or at least some form of cheating); the former is not. But the AI detector tools seem to be mostly targeting the former.

2 of 24

Former professor here, and you irked me enough here to bring it back out of me. But plagiarism is stealing another person's work and passing it off as your own. How can you steal from an inanimate tool who's whole purpose is to do exactly what you have done with it? Cheating and plagiarism aren't the same thing as copyright infringement. The US government can hold that non-persons can't hold copyright, but you're still cheating if you tell me you wrote something that you didn't write. You can plagiarize public domain works as well. Academic dishonesty is 100% about you -- I don't care who did the work of writing the text. I care only that you said you did and you didn't. We will probably evolve towards a world where LLMs are an accepted part of the writing process and adjust the way we ask students to complete work and how we assess that work, but until we get there, the expectation is generally that you the student wrote the text, and if you didn't write it and you didn't properly quote and/or cite it, it's plagiarism. Now for the actual question about the reliability of the detectors and how things are going to shake out around them. The pretty easy answer is that it's going to be messy for a while, and we'll probably have to end up just abandoning the idea that essays are a reliable way to assess student knowledge. If I were still in academia, I'd probably be looking to replace a lot of current outside work with in-person assessments. Think "job interview" versus "homework assignment". I'm less worried about the false positive aspect of these tools because, while I think it is a concern, the nature of the game almost necessitates giving up. If the model output isn't reliably detectable by humans and there's no smoking gun you can point to as the source of the plagiarism, then it becomes incredibly hard to justify any significant punishment. We're not going to expel tens or hundreds of thousands of students on the output of a black box with no other evidence (though we may expel a few while we're getting our shit together). For what it's worth, ZeroGPT took five of my own writing samples and returned 0% likelihood of AI generation for all five. I managed to get it up to 5% by pasting in some random content-farm bullshittery from the internet. So while I'm sure it's not amazing, you may be an outlier here.

reddit.com › r/blogging › what's a good ai detector?

r/Blogging on Reddit: What's a good AI detector?

August 15, 2023 -

Hi guys! I've used zimmwritter to make my posts and I think that it did a great job! I did my best to make more human, however when it comes to larger posts it just doesn't seem feasible for me to make little edits, specially if I want to post multiple times per week, I tried various AI detectors but they all gave me different results, I was wondering if you could recommend me a reliable one, thank you!

Top answer

1 of 12

US Constitution was written by AI as per AI Detector Tools. They're useless and waste of time

2 of 12

Nothing is accurate whatsoever, good news it doesn’t matter google couldn’t care less if it’s AI it only cares about helpful content

reddit.com › r/seo › which tools are the best detect ai written content?

r/SEO on Reddit: Which tools are the best detect AI written content?

June 16, 2024 -

I tried so many tools to detect AI generated content, at present I'm using zerogpt, gptzero tools which are giving some accurate results..Which tools are you using to detect AI content? Please share me the comments.

Top answer

1 of 4

If you’re trying to detect AI content for some sort of SEO purpose, stop. It’s a waste of time, as search engines don’t check for AI and nor do they have the processing power right now to even check millions of web pages for ai content. That’s why Google doesn’t care if it’s ai content or not.

2 of 4

They are all equally shitty.

reddit.com › r/professors › can someone here please tell me what is the best free ai detector that actually works/ if there isn't one: are your colleges helping fund it?

r/Professors on Reddit: Can someone here PLEASE tell me what is the best FREE AI Detector that actually works/ if there isn't one: are your colleges helping fund it?

March 30, 2025 - Quetext is one the AI detectors that actually works. I recently posted a answer where I had seen Grammarly showcase 75% for a chatgpt content and Quetext showed 99% here.

reddit.com › r/seo › ai content tool detector

r/SEO on Reddit: AI Content Tool Detector

October 24, 2023 -

Hi, I need your suggestions, guys. Is there any reliable AI tool online that can detect AI-generated content, or should I rely on any AI detector tool? I ask this question because after the March core update, many website owners have rewritten or changed their website content.

Top answer

1 of 5

No there is no reliable tool

2 of 5

Yesterday I found nice tool for detecting AI content. I tried checking ChatGPT generated content and tool detected AI patterns. Tool caled: undetectable.ai

reddit.com › r › aicontentdetectors

r/aicontentdetectors

September 30, 2024 - r/aicontentdetectors: An online space to chat about the latest in Ai Tech advancements, especially Ai Writers and Ai Content Detectors. This is a…

reddit.com › r/umgc › ai detector accuracy

r/UMGC on Reddit: AI Detector accuracy

August 17, 2024 -

I am at a loss here. For background, I am not an English native speaker. Writing in English has always been a bit awkward for me. Grammarly and Quillbot have been a blessing.

The issue I am having is this. I am writing an analysis for my first assignment. I wrote the whole thing. I obviously paraphrased from the source material. I got curious and put it through Quillbot's AI detector. Imagine my surprise when it said that it is 100% AI generated. Once I put it through Quillbot paraphraser, it lowered it to 58% AI generated.

I don't know what to do here. Beyond lowering my own standards of grammar, which I am not going to do, I am afraid that a professor might think I am cheating.

Is there anybody else having this issue or experienced this? Am I overthinking this?

Top answer

1 of 4

I just want to make sure I understand this. It said that your write was 100% generated, but then when you used the tool to generate a paraphrasing of your own text it said it was now only 58% generated? Seems a bit backward to me. To answer your question, none of the current AI detectors are any good at all. Just do your own work, and if it is ever questioned, there are plenty of articles that you can use to fight your case.

2 of 4

This is very typical for non-native English speakers. One reason being that we (ESL student here as well) do not use the same vocabulary as US high school attendees. I believe there are SAT related terms that AI detectors look for, as an example. Those of us that did not spend years preparing for SATs, are not going to score high in that department, leading to a "red flag". The detectors are exceptionally poor at detecting AI generated work. This is well known and therefor faculty are not supposed to use these tools. They use turnitin. I am a native German speaker. I will be graduating in the fall of 25. I have not had a single doubt regarding the validity of my essays, etc. Simply keep your drafts and outlines you produced while composing your analysis, and you will be fine. That will be sufficient evidence that you provided your own work. Keep up your hard work. It's normal to be worried, just talk to your professor about it.

reddit.com › r/professors › what ai detectors you're using currently? 100-level composition instructor here.

r/Professors on Reddit: What AI detectors you're using currently? 100-level composition instructor here.

September 22, 2024 -

I'm using Turn-it-In, which is built into the LMS. Papers are coming due soon. I am anticipating problems and want to know what AI detectors you are currently using. I know that detectors aren't 100%. Usually I can tell the AI use by the writing style, but I also know from all of you house students might dig in.

Backstory is that the dept seems to be back in the students more than us. I've probably read most threads on here for the last couple of years on this topic, so I'm not looking for advice other than the detectors and would love to hear your experiences with those.

I have a plan for how I'm going to handle it. I want to use more than one detector. What's working for you?

Top answer

1 of 5

None. None of them work.

2 of 5

Just my brain, and handwritten writing samples from my students to compare, and also a lack of willingness to die on this hill. If I get something that's obviously chatGPT, I tear it apart over every unsubstantiated claim and every unexplained abstraction and give it a low grade. I will also say things like, "This sounds like chatGPT" in the comments. I'm much more encouraging in feedback with work that is obviously student-written and shows effort with the material.