Undetectable AI vs. BypassGPT: Which is Better?
AI detection remains as inconsistent as ever, and as a result, AI bypassers are becoming more popular. Today, we’ll compare Undetectable AI and BypassGPT to find out which one best suits your needs.

John Angelo Yap
Updated February 16, 2025

Two AI fighting to be the best writer, generated with Midjourney
Reading Time: 4 minutes
Getting falsely accused of using AI can be one of the worst things to happen to anyone. From a student losing good academic status to a writer losing his job, the fact that AI detection is still this inconsistent in 2024 means we have to look for ways to defend ourselves.
Over the past year, we’ve seen AI bypass tools evolve and become more effective. However, there’s still the slight issue of price tags. Not everyone can afford to burn through every AI bypasser in the market just to find the right one.
Well, you can rest easy. We’re going to find the right AI bypasser for you, starting with a comparison article for Undetectable AI and BypassGPT. In this article, I’ll discuss everything you need to know about their features, output quality, price, and why the former is better at avoiding AI detection. Stay tuned!
What are Undetectable AI and BypassGPT?
Undetectable AI is a popular AI bypass tool whose goal is to turn something that reads like machine-generated into something more human. Their methodology is simple: remove common AI markers and add some mistakes to humanize your content.
This tool also offers a lot of output customization features such as switching from different use cases, readability levels, and paraphrasing levels. We’ve reviewed this product a lot in the past, so make sure to check some of them out if you’re interested in diving deep into what makes it tick.

BypassGPT is similar to Undetectable AI, but offers much less features. You won’t have much output customization, but you can switch between three different modes:
- Fast: Basic document changes.
- Enhanced: Thorough rewrite of the original text.
- Creative: Applies a more casual and creative tone to your original text.

Undetectable AI vs. BypassGPT: Output Comparison
Original ChatGPT Text | |
The Papyrus font is a divisive typographical choice, evoking strong reactions for and against its use. Designed in the 1980s by Chris Costello, it aimed to mimic the elegant hand-lettering of ancient Egyptian papyrus texts. With its connected letters and faux-aged texturing, Papyrus strove to exude an antique, almost hieroglyphic aesthetic.
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Undetectable AI | BypassGPT |
The choice of the Papyrus font tends to spark opinions with supporters and critics. Created by Chris Costello in the 1980s it was inspired by the handwriting seen in Egyptian papyrus scrolls. Featuring letters and an aged appearance Papyrus aimed to capture a vintage hieroglyphic look.
| The Papyrus font is one of the most polarizing typographical decisions—people either love it or hate it. Developed by Chris Costello in the 1980s, Papyrus intended to replicate the elegant, calligraphic writing style of historical Egyptian texts produced on papyrus paper. The linked letters and artificially aged text of Papyrus gave the impression of an ancient, ‘almost hieroglyphic’ feeling. As some consider Papyrus to have an evocative, rustic feel when used correctly, others believe it is an inappropriately overused cliché that exudes inauthenticity and poor taste. For some, Papyrus is divisive: the mere suggestion of the name may spark contentious disagreements. Design history’s distinct, reedy forms utilized Papyrus’s fonts during the centuries. |
If we’re going purely by which one is more sound, then BypassGPT wins this without a doubt.
But, I’ll start with Undetectable AI. I’ve often characterized their outputs as lacking in coherence, and this is no exception. In fact, this is more tame compared to its outputs in our other comparison articles. Reading through their text, I can see some punctuation and grammar errors, but most aren’t unfixable.
That’s not to say, however, that BypassGPT’s output is perfect. It has its fair share of faults, particularly in understanding the original purpose. From what I see, it also seems that BypassGPT has a poorer grasp of synonyms than Undetectable AI, and can sometimes use unnecessarily deeper words just to avoid detection.
Overall, I’d still give it to BypassGPT for this round, but they could both do a lot better when they release future versions of their product.
Undetectable AI vs. BypassGPT: Accuracy Comparison
Test #1
Undetectable AI: Detected as human!
AI Likelihood Score: 0.1%


BypassGPT: Detected as AI.
AI Likelihood Score: 100%


Test #2
Undetectable AI: Detected as AI.
AI Likelihood Score: 60.6%


BypassGPT: Detected as AI.
AI Likelihood Score: 100%


Test #3
Undetectable AI: Detected as human!
AI Likelihood Score: 0%


BypassGPT: Detected as AI.
AI Likelihood Score: 30.1%


Test #4
Undetectable AI: Detected as human!
AI Likelihood Score: 0%


BypassGPT: Detected as human!
AI Likelihood Score: 0%


Test #5
Undetectable AI: Detected as human!
AI Likelihood Score: 0%


BypassGPT: Detected as AI.
AI Likelihood Score: 94.2%


Test #6
Undetectable AI: Detected as human!
AI Likelihood Score: 0%


BypassGPT: Detected as AI.
AI Likelihood Score: 100%


Average Likelihood Score
Test Number | Undetectable AI | BypassGPT |
Test #1 | 0.1% | 100% |
Test #2 | 60.6% | 100% |
Test #3 | 0% | 100% |
Test #4 | 0% | 0% |
Test #5 | 0% | 94.2% |
Test #6 | 0% | 100% |
Average | 10.12% | 82.37% |
Undetectable AI vs. BypassGPT: Pricing Comparison
Undetectable AI has a flexible subscription model perfect for your word count needs. Start off with the base plan at 15,000 words for just $14.99 a month (or 10,000 words for $5 monthly if you pay yearly). As your writing ramps up, easily level up - all the way to 380,000 words for $209 monthly ($89.92 annually for 300,000 words). They also offer a free trial of 250 words upon signing up.
BypassGPT offers three different plans. Their cheapest plan starts at $12 per month for 5,000 words, then $19 for 30,000 words, and $49 for unlimited words.
The Rundown
Here’s the thing: BypassGPT is much better at writing and cheaper (for large-scale projects) than Undetectable AI. However, it’s still pretty clear to me that this is Undetectable AI’s win.
My reasoning boils down to this: both are marketed as AI bypassing tools. So, more than paraphrasing a piece of text, the expectation should be that they’ll avoid AI detection most of the time. When you’re getting close to 100% AI likelihood score 5 times out of 6, that’s not a good sign.
And that’s why Undetectable AI remains our favorite AI bypasser. Its output quality can be hit-or-miss, but it’s always consistent in avoiding detection. If you need more proof of this, you can read more about Undetectable AI in our many articles about this tool. Good luck!
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