Undetectable AI Vs Quillbot [2024] - Comparing The Two!

Undetectable AI Vs Quillbot [2024] - Comparing The Two!
"This DESTROYED My ChatGPT Workflow!"
- Ezekiel Whitlock, Forbes Editor
Used By 1000s Of Writers, Students, SEOs & Marketers, Twixify Is The #1 Tool For Bypassing AI-Detection!
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Is Quillbot Better Than Undetectable AI?

You know when you’re stuck between two great tools and just need to figure out which one suits your needs better? That’s where QuillBot and Undetectable AI come in. QuillBot is fantastic for paraphrasing, checking grammar, and summarizing text, making it a go-to for improving the clarity and readability of your writing. I often use QuillBot to rephrase content and correct any grammar issues, which helps me create polished and engaging text quickly.

On the other hand, Undetectable AI focuses on making AI-generated content look like it was written by a human. This is crucial when you need your text to pass AI detection systems, such as for academic papers or online publications. The tool introduces subtle variations and human-like errors to avoid detection, which is particularly useful for maintaining the authenticity of the content.

Both tools offer unique features tailored to different writing needs. QuillBot is great for general writing tasks, while Undetectable AI is essential when your content must look convincingly human-written. Understanding these differences helps you choose the right tool for your specific requirements.

What Is Quillbot?

Screenshot of Quillbot's popularity stats
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Ever find yourself stuck trying to rephrase a sentence without losing its meaning? That's where QuillBot comes in handy. This AI-powered tool isn't just for paraphrasing; it's like having a writing assistant that enhances your text's clarity and fluency. I use it regularly to avoid plagiarism and to make my writing sound more polished.

QuillBot's standout features include a powerful paraphrasing tool that offers multiple writing modes, such as Standard, Fluency, and Creative. These modes help tailor your text to different audiences, whether you're working on academic papers or creative writing projects. The Synonym Slider is another useful feature, allowing you to control the level of vocabulary changes to maintain the original tone of your work.

But that's not all. QuillBot also includes a grammar checker, summarizer, citation generator, and even a plagiarism checker. These tools save a ton of time, especially when you’re working on complex documents or lengthy research papers. For instance, the summarizer helps condense large texts into key points, making it easier to review and understand lengthy content quickly.

Integration with platforms like Chrome and Microsoft Word means you can use QuillBot directly within your workflow, enhancing productivity without the hassle of switching between apps. It's particularly popular among students, researchers, and professionals who need to ensure their writing is both accurate and engaging.

What Is Undetectable AI?

Screenshot of Undetectable AI's homepage UI
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From what I’ve seen, Undetectable AI is a must-have for anyone working with AI-generated content. This tool is designed to humanize text produced by AI, making it appear as though it was written by a person. I use it frequently to ensure my AI-generated drafts pass detection systems like Turnitin and GPTZero, which is crucial for maintaining content authenticity and avoiding plagiarism flags.

Undetectable AI works by introducing subtle variations and human-like errors into the text. This approach helps in bypassing AI detection algorithms that typically look for patterns unique to machine-generated content. For instance, I often use it to rework content that needs to appear original for blog posts and academic papers, ensuring it reads smoothly and naturally.

The tool is particularly useful for content creators, bloggers, and marketers who need to generate high-quality, undetectable content. It offers features like writing level matching, which tailors the text to match the intended audience’s reading level. This is a game-changer for maintaining a consistent tone and style across different types of content.

Developers and businesses can integrate Undetectable AI into their applications through its API, making it a versatile addition to any content creation workflow. Whether you’re writing product descriptions, SEO-optimized articles, or social media posts, this tool helps keep your content under the radar of AI detectors.

In terms of usability, Undetectable AI is straightforward. You start by pasting your AI-generated text into the platform. It then scans and rewrites the content to minimize detection risk. This process has been a time-saver for me, especially when working on large volumes of content that need to meet stringent originality standards.

With over 5 million users and a top rating by Forbes, it’s clear that Undetectable AI is trusted by many for its ability to produce human-like text while preserving the original message. If you’re looking to keep your AI-generated content undetected and polished, this tool is definitely worth considering.

5 Main Differences Between The Two

From my experience, QuillBot is a reliable tool for general paraphrasing and improving text quality. It’s straightforward to use and integrates well with other tools, making it a convenient choice for everyday writing tasks.

Undetectable AI, on the other hand, is my go-to for ensuring content can evade AI detection. Its advanced rewriting capabilities and customization options make it indispensable for specific needs where detection evasion is crucial. This tool requires a bit more attention to detail but pays off by producing text that consistently bypasses AI detectors.

Paraphrasing Capabilities

QuillBot uses natural language processing to rephrase content while keeping the original meaning intact. It offers various modes like standard, fluency, and creative, allowing me to choose how I want the text to be rephrased. This tool is great for improving readability and ensuring the content flows well. QuillBot is handy for making text more engaging and clear, especially when the goal is to rephrase academic papers or enhance general content quality.

AI Detection Evasion

Undetectable AI focuses on making rewritten text undetectable by AI content detectors. It uses advanced algorithms to disguise text, removing patterns that AI detectors look for. This tool is essential when I need to rewrite AI-generated content or content flagged by plagiarism detectors. It ensures that the text passes through detection tools without being flagged, making it suitable for more covert content rewriting needs.

Customization and Integration

QuillBot allows me to adjust the complexity of the vocabulary and the structure of the sentences. It has features like a thesaurus to find synonyms and a summarizer to condense text. It integrates well with browsers and word processors, providing a seamless experience for quick edits and rephrasing.

On the other hand, Undetectable AI offers customizable writing styles to match specific tones or brand voices. It includes API and Chrome extension integration, making it versatile for different workflows. This level of customization helps in maintaining a consistent voice across various content types while ensuring the content remains undetectable by AI tools.

Accuracy and Readability

QuillBot can sometimes lose the original meaning if the rephrasing is too broad or if summarization discards essential details. However, it generally maintains good readability and improves the clarity of the text.

Undetectable AI, while sophisticated in its rewriting, ensures that the original meaning and context are preserved. It uses natural language processing to maintain proper grammar and syntax, ensuring that the text remains human-like and readable.

Practical Use Cases

QuillBot is ideal for rephrasing short descriptions, snippets, and summarizing longer texts. It’s useful for improving the readability and quality of content without needing to evade AI detection.

Undetectable AI shines when the content needs to bypass plagiarism and AI detection tools. It’s perfect for rewriting AI-generated drafts, repurposing niche content, and ensuring that rewritten content remains undetectable.

Comparing Their Abilities To Bypass AI Detection

Understanding how AI tools humanize text is key. To compare QuillBot and Undetectable AI, let's look at their grammar correction capabilities.

Grammar Correctness with Undetectable AI

First, we took a piece of text generated by ChatGPT and processed it through Undetectable AI. After saving the text, we ran it through Grammarly. The grammar score was 59, indicating that while Undetectable AI can make the text seem more human-like, it still has room for improvement in grammar.

Grammar Correctness with QuillBot

Next, we processed the same text through QuillBot. QuillBot's paraphrasing gave us a much higher grammar score of 94 when checked on Grammarly. This score shows that QuillBot is highly proficient in maintaining grammatical accuracy while humanizing the text.

Plagiarism Detection

To further test these tools, we ran the same document through Turnitin for plagiarism detection. This step helps ensure that the text not only reads well but is also unique. Both tools aim to make AI-generated content less detectable as AI while improving grammar and originality.

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Pricing Comparison

When it comes to subscription costs, here's a breakdown for QuillBot and Undetectable AI:

Quillbot offers a free version with some limitations and a premium version that costs $99.95 per year. On the other hand, Undetected AI has three pricing plans: monthly, yearly, and business. The yearly plan, costing $5 per month for 10,000 words, offers the best value.

QuillBot Subscription

QuillBot offers a free version that allows you to paraphrase up to 125 words. This free plan includes standard and fluency modes but limits you to freezing just one word on the synonym slider, and only to the first level. Additionally, you get access to summarizing up to 1200 words. The premium version, which offers better performance, is priced at $9.99 per month. If you opt for the yearly plan, it costs $4.17 per month.

Undetectable AI Subscription

Undetectable AI doesn’t have a free plan, but you can try the tool with about 250 words for your first use. The subscription cost is also $9.99 per month, dropping to $5 per month when billed annually.

Evaluation from a User’s Perspective

As someone who frequently uses both tools, here’s what you can expect:


I often use QuillBot to rephrase content and ensure my grammar is spot-on. The free version is handy for small tasks, but if you need to work with larger texts or require more advanced features, the premium version is worth the investment. The yearly plan is particularly cost-effective if you use the tool regularly.

Undetectable AI

Undetectable AI is crucial for making AI-generated text look like it was written by a human. The initial trial helps you get a feel for the tool, but for ongoing use, the monthly or annual subscription is necessary. I find the annual plan to be the best value, especially if you need consistent, human-like text generation.

Can Undetectable AI Detect QuillBot?

Undetectable AI's detector can still catch text that's been paraphrased by tools like Quillbot. These paraphrasing tools change sentence structure and swap words with synonyms, which can fool basic detectors. However, advanced AI detectors analyze deeper patterns and context, making them more effective at identifying paraphrased text.

How Advanced AI Detection Works

Advanced detectors go beyond surface-level changes. They look at things like writing style, word usage patterns, and context. This means even if Quillbot changes the words and structure, the underlying style and context might still reveal AI-generated content.

The Role of Sophistication

The effectiveness of detection depends on how sophisticated both the paraphrasing tool and the detector are. Quillbot might do a good job of making the text look different, but if the detector is advanced enough, it can still spot the AI origins. It's like a game of cat and mouse—each side constantly improving to outsmart the other.


QuillBot is great for general paraphrasing, enhancing text quality, and improving readability. It offers various modes and integrates well with other tools. Undetectable AI, however, is my choice for evading AI detection due to its advanced rewriting capabilities and customization options. While QuillBot excels in maintaining grammatical accuracy, Undetectable AI focuses on making content undetectable by AI detectors. I like QuillBot’s ease of use but dislike its cost for premium features, whereas Undetectable AI is excellent for avoiding detection, but it requires more attention to detail in grammar accuracy.

True Or False?

ChatGPT generated content can be detected by Google and Teachers?