You should read this article if...
you're wondering whether Undetectable AI can truly go undetected? I tried it for the last 7 days and found these 8 things you should know.
 
I'll talk about the 3 things Undetectable AI gets right and 5 things it gets seriously wrong. Trust me, there’s a lot to uncover, and you don’t want to overlook these flaws.
 
Also, you must be curious about the cost, right? I’ve got you covered with all the details and promo codes you need. Budget matters, after all.
 
I'll talk about all this and more in less than 4 minutes. Grab a coffee, get comfy, and let's dive in!
 
And before you brush this off as another run-of-the-mill review. This is different. I've used this tool for a whole week (all day every day!) and scoured through 100s of Undetectable AI reviews.
 
I'm not holding back. You'll get the full picture – the good, the bad, and everything in between.
 
Before I forget, here are some quick links to everything covered in the blog:
 
Man asking if everyone is ready.

Undetectable AI Review Summary

 
Infographic showing the pros and cons of Undetectable AI at a glance.
 
If you're short on time, here's a quick 2-minute summary of this blog:
 

3 Things Undetectable AI Gets Right

 
  • User-Friendly Blog Writing: Users love how easy it is to whip up blog posts with this. It also adds relevant images and handles SEO. I tried it too, it's pretty nice but there are specialized blog writing tools that might be better.
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  • Customizable Output: You can tweak the humanized outputs however you want, whether it’s the tone, length, or style. You can tune the readability level and customize output based on purpose (essay, article, blog, etc.)
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  • Humanizing AI Text: People dig how it makes AI text sound more like a real person and less like a robot. Their humanization feature is good but there are some issues, more on that below.
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  • If you want to understand all of this better, more on the bright side of Undetectable below.
 

5 Things Seriously Wrong With Undetectable AI

 
  • Still fails AI Detectors: Many users find that the tool doesn't actually make AI text human. For instance, I humanized 9 AI generated texts myself, it got flagged by AIDetectPlus (my tool!) 6/9 times.
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  • So-so Customer Service: Some users find their support quick, but many others dislike the customer service. Some users wait days for a response and still do not get their problems fixed.
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  • Misleading Advertising & High Costs: The free trial isn't really free. Moreover the unused credits lapse at the end of month, this means you keep paying for the same credits every month.
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  • Refund Issues: If you ask for a refund, don't expect to get it easily. Many users report never getting their money back, even after multiple attempts to contact support.
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  • Grammatical Errors in Humanization: The humanized text often contains grammar mistakes and awkward sentences. I tried the tool and realized it introduces grammatical mistakes to make text sound "human". Instead of saving time, it can make your work harder because you fix all the errors it introduces.
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  • Details on the dark side of Undetectable below.
 

What Does Undetectable AI Cost?

 
3 different Undetectable AI plans - Monthly, Yearly, Business.
 
  • Monthly Plan - Starts at $14.99/month for 15,000 words. Need more words? Prices and discounts increase with usage. Goes up to $209/month for 380,000 words with a 45% discount. It’s good if you want to dip your toes in and you can cancel anytime.
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  • Yearly Plan - This one’s a better deal if you’re sticking around for a year. Billed annually at $60, you get 10,000 words each month. It’s a good option if you want to save some money over time. Discounts increase with more words, up to $89.92/month for 300,000 words.
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  • Business Plan - Need a ton of words? This plan’s for you. It’s custom-priced based on how many words you need, and the credits never expire. You get priority support and can even redistribute and white-label the content. Perfect for big projects or teams.
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  • So should you buy Undetectable AI? Well, there are some problems too, the biggest one is your credits go away each month even if you don't use them up. More insights into it's cost below.
Well, that was the review in 2 minutes. But if you have 3 more minutes to spare, we'll dive deeper into Undetectable - what it's great at and where it falls short.
 

Undetectable AI Review - Where Does It Shine?

 
Infographic showing the best 3 Undetectable AI pros.
 
Here's what 3 things everyone likes (including me!):
 
  • User-Friendly Blog Writing:
    • Effortless Content Creation: Creating blog posts is pretty easy with this tool. Easy for adding images and content structuring. It's good to get a first draft, but you will still need to do a lot before publishing.
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  • Highly Customizable Output:
    • Custom Readability Levels: Undetectable AI lets you choose the readability level of your output. This could be one of 'High School', 'University', 'Doctorate', 'Marketing', or 'Journalist'. Pretty interesting, ngl!
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    • Custom Humanization Levels: When you humanize your content, it asks you to pick between making it "more readable" or "more human". In my experience, choosing "more human" led to more grammatical errors. I guess they assumed it to be "more uneducated human", sigh. Anyway, I still like that you can tune the humanization level.
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    • Custom Output Based on "Purpose": This by far seems the most useful, it changes the humanized outputs based on the kind of content you're writing. You can pick from Essay, Marketing, Cover Letter, etc.
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  • Humanization Quality is Decent:
    • Natural Sounding: The humanized text produced by this tool does sound like a human. So it does a decent job at the core functionality (barring the grammatical mistakes).
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    • Refunding the cost of humanization: They claim on their site that if their humanized content doesn't pass AI detectors, they'll refund the cost of humanization. Not sure what the "cost of humanization" is, but it seems like an extra warranty on the output.
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    “First try with humanizing only passed originality partially, second time worked completely. Will be using and super excited I found a tool that works.” ― Timmi (He/Him)
 

Undetectable AI Review - Where Does it Fall Short?

 
Infographic showing the worst 5 Undetectable AI cons.
 
Alright, now it's time to get real and talk about the worst 5 things where Undetectable AI:
 
  • Sometimes still fails AI Detectors:
    • You’d think a tool called "Undetectable AI" would make your text undetectable, right? But nope, many users are saying it still gets flagged by detectors like Originality AI. It’s frustrating because you’re paying for something that doesn’t even do its main job.
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    • I tried it, but it didn't pass AIDetectPlus 3/9 times, I tried it for 4 blogs, 3 essays, and 2 papers.
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  • Terrible Customer Service:
    • Slow Responses: Users report waiting days for a response, which is super annoying when you need help right away. It sort of feels like they don’t care about their customers.
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    • Unhelpful Staff: Even when you get a response, it’s often not helpful.
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    Here's what a user said in their their review:
     
    “Unfriendly and lousy customer service, very arrogant. I tried to change my email, but the system throws an error message. I asked the support to change the mail, but the support is not willing to help. Despite all that, the Humanizer is not very good and not really helpful.” ― Björn (UK)
     
  • Misleading Advertising & High Costs:
    • Trial Isn’t Free: They lure you in with a "free trial," but then charge you for a whole year. Also, it's super difficult to cancel. Imagine canceling within minutes and still getting charged. That’s what users are experiencing, and it’s frustrating.
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    • Unused credits disappear every month: If you don't use your credits, they disappear when the new month starts. This means you keep paying for credits you might not use.
       
    • Even with the yearly plan, you get your credits each month, not all at once for the whole year. More on that below.
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  • Billing Issues:
    • Hard to Get Refunds: If you ask for a refund, good luck. Many users say they never got their money back, even after multiple attempts.
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    • Difficult to Cancel: Users have reported that their cards get charged even after canceling multiple times, Undetectable messed up here.
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    Here's a review by Dory talking about their billing issues:
     
    “Been trying to notify this company for months! Never signed up for this and frankly I just don’t understand it. But they have been getting into my account every month and I keep disputing it. This getting criminal now. They just won’t stop even after a 4th card change.” ― Doryx (US)
     
  • To Err is Human?
    • Undetectable thinks introducing grammatical mistakes in your content would "humanize" it. And they are right, grammatical errors will help you bypass AI Detectors.
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    • But these mistakes will make your essay or blog look sloppy. These mistakes will hurt your grade or your SEO. They make you win the battle but lose the war.
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    • Instead of saving you time, it creates more work because you have to fix all the errors.
Btw, if you want a tool that makes your content sound human without grammar mistakes, try AIDetectPlus. And you can try it for free (up to 1000 words!) here.
 
That's it for the detailed review. Are you rushing to use Undetectable or do you want to look at alternatives? First, let's talk about how much it costs!

Is Undetectable AI Free?

 
Comparison of 3 Undetectable AI pricing plans.
 
Yeah, they give you a 'free' trial of 250 words, but the tool isn't free. The pricing is all over the place—seriously, it's like they want to confuse us. Anyway, let's jump into this together, and I'll try to break it down as simply as possible.
 
Monthly Plan
This is their most popular plan among individuals or small teams.
 
  • It starts at $15/month for 15000 words. This includes all the basic features like AI detection, humanization, and auto-typer.
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  • When you buy more words, you get discounts based on how many words you purchase. But you can buy a set amount of credits, like 80,000 or 120,000 words, but not something in between, like 100,000 words.
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  • The way they do discounts is odd. If you get 15,000 words, you don’t get any discount. But if you buy 35,000 words, you get 10% off. And if you go up to 380,000 words, you get a 45% discount. Told you it's confusing, didn't I?
 
Yearly Plan
  • You get all the same features as Monthly Plan but also a flat 50% discount for paying yearly.
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  • What's annoying about this is that your credits still expire every month. For example, if you pay $60 a year, you get 120,000 credits, but you can only use 10,000 each month. So, even though you're paying for the whole year upfront, you don't get all your credits at once. Instead, they give you 10,000 credits every month. This bugged me.
 
Business Plan
If you plan to use Undetectable AI for your business, this is for you.
 
  • It’s custom-priced based on how many words you need, and the credits never go away. You get priority support and can redistribute and white-label the content.
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  • The features here are basically the same as the plans above. The difference here is your credits don't expire but you need to buy in bulk (upwards of 1M+ credits).
But...
 
  • There are better options out there. And these are available at a much more affordable price too.
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  • For example, AIDetectPlus offers complete AI Detection and Humanization starting at just $5. That's not $5/month, that's $5 one time!
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  • And that's the best part, your credits NEVER EXPIRE! You can buy as little as 5000 words for a one-time payment of $5 and use them whenever you want. You only pay again if you want more credits.
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  • If you're interested in a head-on comparison between Undetectable AI and AIDetectPlus, jump to the section below.
Are there any Undetectable AI promo codes?
  • Yes, there are, and I even used one myself. I had to buy a subscription because their trial only covers 250 words. Here's a quick list of websites where you can find promo codes (I'm not an affiliate or sponsor, just sharing info I found):
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  • AffByte
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  • Rytbee
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  • Affiliate Weapons
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  • Many more affiliate sites offer these discount codes. You can find them by just googling for 'undetectable ai promo codes'.

What are some Undetectable AI alternatives? Here are the top 4...

 
Top 4 Undetectable AI alternatives.
 
We've already seen everything good and bad about Undetectable AI. Before taking the final call, let's look at a few alternatives. Let's see how it measures up against some of the top players:
 

#1 - Undetectable AI vs AIDetectPlus

  • What's the same: Both tools offer complete AI Detection and Humanization solutions for everyone—from individuals to businesses. They also adjust your output based on your needs, whether it's an essay, article, blog, or more.
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  • Where is AIDetectPlus Better?
    • AIDetectPlus is 10x more affordable than Undetectable AI. With AIDetectPlus, you only pay once, and your credits NEVER EXPIRE!
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    • Unlike Undetectable AI, we don’t make you pay for the same credits every month.
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    • AIDetectPlus' humanized text contains no grammatical mistakes with specialized detectors & humanizers for students, teachers, and marketers.
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    • AIDetectPlus is easier to use and customer support is way better (I promise!).
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  • Where is Undetectable AI Better? It helps you customize your output better based on readability and humanization levels. AIDetectPlus, on the other hand, gives you a simple tool to handle all your AI Detection and Humanization needs.
 

#2 - Undetectable AI vs Turnitin

  • Both have cool features, but they focus on different things.
    • Turnitin is great for checking plagiarism and giving feedback on writing.
    • Undetectable AI, on the other hand, is all about making AI-generated text look human. If you’re writing a lot with AI, it can save you a ton of time.
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  • Where is Turnitin Better?
    • Turnitin is great for schools and institutions, it's specially designed for grading essays and papers.
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    • Turnitin is a more complete tool offering solutions for both AI Detection and plagiarism checking.
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  • Where is Undetectable AI Better? It is a better tool if you're just concerned with Humanization or AI Detection. It's better if you’re aiming for content that's easy to read and sounds natural.
 

#3 - Undetectable AI vs Quillbot

  • What's the same?
    • Both tools help you rewrite your content to make it more readable/human.
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  • Where is Quillbot Better?
    • Quillbot is better at rephrasing/tweaking sentences, it's all about rephrasing and improving writing flow. It’s handy for freshening up your work.
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    • Quillbot charges just $50/year so it's much more affordable than Undetectable AI. However, users have reported problems with strict usage limits.
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  • Where is Undetectable AI Better? It is better at AI humanization/detection. It might mess up some grammar here and there, but if you want your AI writing to bypass AI detectors, pick it over Quillbot.
 

#4 - Undetectable AI vs Originality AI

  • What's the same?
    • Both tools offer AI Detection but Originality doesn't offer humanization.
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  • Where is Originality AI Better?
    • I read through 30+ Originality customer reviews and people are pretty happy with their customer support.
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    • Originality AI is a more complete tool for fake content detection. It offers AI detection, plagiarism, fact, and readability checking.
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  • Where is Undetectable AI Better? It's AI detection quality is better, Originality has too many false positives. For example, even old essays and legal texts get flagged sometimes. Also, it offers humanization but Originality doesn't.
 

Is Undetectable AI Legit?

Man saying No.
 
Short answer - NOT QUITE!
 
Here's why:
  • Reason #1: Bad Customer Support: Slow responses, unhelpful staff, refund & cancellation issues. You name it, they have it.
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  • Reason #2: Overcharging for Credits: Your unused credits don't carry over to the next month, even on the annual plan.
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  • Reason #3: Grammatical Mistakes: Using Undetectable AI is supposed to make your content sound more human without you having to edit it yourself. But it often adds grammar mistakes, so you end up doing more work fixing those errors.
This review by Lily (ex Undetectable AI user) sums it up perfectly:
 
“Don't buy this, it will make your writing illegible by introducing common spelling mistakes, invalid sentences. Literally AI does a better job bypassing than undetectable.ai. I got my money back after chargebacking, this company seems to write fake reviews and bot posts to gain popularity. Edit: LUCKILY CASHAPP SUPPORT REFUNDED ME ALREADY 🙏" ― Lily Cao (US)
 
What's the alternative then?
 
Not to toot my own horn, but AIDetectPlus solves all of Undetectable AI's problems. How?
 
AIDetectPlus dashboard.
 
Well for starters, we offer an actual free trial of 1000 words. But more importantly:
 
  • #1 Completely error-free humanization: We use a special algorithm that humanizes your text without introducing grammatical errors, and it passes AI Detectors with 97% accuracy.
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  • #2 Credits NEVER EXPIRE: Once you buy the credits from us, they never go away. You only pay again if you need more credits.
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  • #3 Better customer support: We're a small team that cares, you wouldn't be stuck talking to an AI chatbot. We reply to all our customers within 12 hours, usually even faster!
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  • #4 Specialized Detectors & Humanizers: We have specialized detectors & humanizers for students, teachers, and marketers. Pick the one that fits you from our menu above.
 
That's a wrap! Hopefully, this review gave you a sense of what's good and bad about Undetectable AI and gave you some good alternatives. If you're curious about AIDetectPlus, head to our website or kickstart your 1000-word free trial. No credit card or phone number needed — just your email, and you're off!