Polygraf.ai VS QuillBot

Compare Polygraf.ai VS QuillBot and see what are their differences

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Polygraf.ai

Polygraf AI is a free, completely private AI Content detector that flags text from ChatGPT, Gemini, Mistral, Llama, Grammarly and more and traces sources and copyright risk in one click.

QuillBot

Quillbot is a free paraphrasing tool that will rewrite any sentence or paraphraph you give it. The article rewriter can rewrite essays or articles and is excellent as a grammar and fluency corrector.

Polygraf AI Main Page //
2025-07-22
Image date //
2024-09-03
Image date //
2024-09-03
Image date //
2024-09-03

Polygraf AI is a free, completely private AI Content Detector that that flags text from ChatGPT, Gemini, Mistral, Llama, Grammarly and others, traces content sources, and detects copyright risk in a single click. It is available on a web browser or as a Chrome extension. Built for solopreneurs, marketers, educators, and legal professionals, Polygraf is the all-in-one toolkit for content validation, originality and trust. Some of Polygraf AI’s top features include: AI Detector, Source Detector, Humanized Text Analysis, Copyright Detector, Deception Filter, and Writing Analysis. Please visit app.polygraf.ai to learn more.

Landing page //
2020-04-08

Polygraf.ai

Website: polygraf.ai
Pricing URL: Official Polygraf.ai Pricing
$ Details: freemium
Release Date: 2024 May
Startup details
Country: United States
State: TX
City: Austin
Founder(s): Yagub Rahimov
Employees: 50 - 99

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QuillBot

Website: quillbot.com
Pricing URL: Official QuillBot Pricing
$ Details: freemium $14.95 / Monthly (Pro)
Release Date: -

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Polygraf.ai features and specs

AI Detector
Distinguish between human-generated and AI-generated or AI-modified content with confidence scores between 0% and 100%.
Source Detector
Identify which AI models were used to create content. Supports Open AI (ChatGPT 3.5, 4), Google Gemini, Meta Llama 3, Mistral AI and Claude.
Humanized Text Analysis
Analyze text to detect content that mimics human comprehension, while considering context, nuances, and sensitivities.
Copyright Detector
Detects the source of the content, providing URLs and exact sentence or phrase matches from the source.
YouTube Context Analysis
The only AI detection tool that offers contextual analysis of YouTube content. Simply provide the YouTube URL, and our tool will do the rest.
Deception Filter
Detect intentional and unintentional text edits aimed at deceiving users, such as empty spaces between words and deliberate grammatical errors.
Writing Analysis
Get insights into the structure of online text, including perplexity, readability, vocabulary richness, syntactic tree depth, average sentence length, and average word length.
Trust & Data Security
We don’t train our models on your data. This means we never store your information, making Polygraf 100% secure and reliable.
The Best Detection Accuracy
Our AI tools boast an impressive >98% accuracy rate in internal tests, setting a benchmark in the industry. Polygrad is trusted by businesses and governments worldwide.

QuillBot features and specs

Paraphrasing
QuillBot excels at rephrasing sentences and paragraphs, making content unique while retaining its original meaning.
Grammar Checking
The tool offers built-in grammar checking to help users enhance the correctness of their text.
Summarization
QuillBot can summarize long articles and documents, making it easier to capture key points quickly.
Multiple Modes
The platform offers various modes like Standard, Fluency, Formal, Simple, Creative, and Expand to cater to different writing needs.
User-Friendly Interface
QuillBot features an intuitive and easy-to-navigate interface, making it accessible for users of all technical backgrounds.
Integrations
It integrates seamlessly with other platforms such as Google Docs and Microsoft Word, allowing for convenient usage.
Affordability
QuillBot offers a free version with basic features and a paid version with enhanced functionalities at a competitive price.

Possible disadvantages of QuillBot

Complexity with Nuanced Text
QuillBot may struggle with accurately paraphrasing highly nuanced or complex sentences, sometimes altering the original meaning.
Limitations on Free Version
The free version has limitations on the number of characters that can be paraphrased at one time, which may be restrictive for some users.
Dependency on Internet
An active internet connection is required to use QuillBot, which could be a limitation for users with unreliable access.
Limited Language Support
As of now, QuillBot primarily supports English, making it less useful for users who need paraphrasing in other languages.
Customization Constraints
The tool offers limited options for customizing the output style beyond the predefined modes, which may not suit all writing needs.
Potential Overreliance
Users might become over-reliant on QuillBot for paraphrasing and grammar checking, potentially stunting their development of writing skills.

Analysis of QuillBot

Overall verdict

QuillBot is generally regarded as a reliable and effective tool for enhancing written content, suitable for both professionals and students. However, individual experiences may vary depending on specific needs and preferences.

Why this product is good

QuillBot is considered good by many users because it offers a variety of writing assistance tools, including paraphrasing, summarizing, and grammar checking. Its AI-driven algorithms help to improve the clarity, coherence, and overall quality of writing. Additionally, QuillBot is user-friendly and integrates with popular productivity tools, making it convenient for users to incorporate into their workflows.

Recommended for

Students who need help with paraphrasing or understanding content.
Writers looking to enhance or diversify their content style.
Professionals who require aid in improving clarity and correctness in their documents.
Non-native English speakers aiming to refine their language skills.

Polygraf.ai videos

+ Add

How to Use Polygraf AI Content Detection Extension

QuillBot videos

+ Add

Quillbot Article Rewriter and Avoiding Plagiarism - TikTok Clowns Are Back

Category Popularity

0-100% (relative to Polygraf.ai and QuillBot)

Polygraf.ai

QuillBot

21 21%

79% 79

Writing Tools

9 9%

Writing Tools

91% 91

Productivity

100 100%

Productivity

0% 0

AI Writing

0 0%

AI Writing

100% 100

User comments

Share your experience with using Polygraf.ai and QuillBot. For example, how are they different and which one is better?

Reviews

These are some of the external sources and on-site user reviews we've used to compare Polygraf.ai and QuillBot

Polygraf.ai Reviews

hedgehog

about 1 year ago

Good one

This tool has one of the best ai (model) detectors, it really saved me when I was submitting my essay (it was 87% AI lol). Extension + web version is convenient, especially for students.

👍 Pros: Fast|Accurate
Go longhorns

· Bachelor of Computer Science at UT Austin · about 1 year ago

By far the most detailed AI detector I've ever used

I transitioned from Turnitin to gptzero to Polygraf. they were all useless, as I got almost suspended due to my school almost failing me for using Grammarly. I can almost swear that that I did not use any other thing. So, Polygraf was the only one that showed that I had used AI but it was Grammarly.

👍 Pros: Shows whichai you used|Shows and highlights the section of the ai content|Shows humanized content

👎 Cons: File upload was not available when i was using it|Their website can be a little more student friendly

QuillBot Reviews

Simon Wang

· Working at Simon Wang · about 2 years ago

A Clever Writing Assistant to Tackle the Word Jungle!

Quillbot is an innovative and powerful language processing tool designed to assist writers in generating high-quality content effortlessly. Available on SaasHub, this software-as-a-service (SaaS) application provides a user-friendly interface and a range of features that cater to the needs of writers, students, bloggers, and professionals. Whether you need to rephrase sentences, paraphrase paragraphs, or find synonyms, Quillbot promises to enhance your writing experience and productivity.

🏁 Competitors: Grammarly, Spinbot

👍 Pros: Versatile text rewrite options|User friendly interface|Multilingual support|Synonym finder|Plagiarism checker

👎 Cons: Limited free version|Occasional grammar issues

15 Powerful CopyAI Alternatives For AI Writing in 2024

Quillbot AI is a versatile tool that offers both paraphrasing and original content creation. It can take existing text and rephrase it in a way that retains the original meaning, making it an excellent tool for academic writing or content repurposing.

Source: blaze.today

Best AI Paraphraser for Non-Native English Speakers: Grammarly, QuillBot, Paraphrasing Tool, Paraphraser.io, Wordtune, Engram (2023)

Quillbot does shorten the sentences and removes any extraneous parts of the sentences. Quillbot's use of words are also more apt for the sentences. The sentences sound more natural than the inputted sentences, thus we recommend this tool for non-native speakers to add the final touches to their writing.

Source: blog.engram.us

Best AI Proofreader for Non-Native English Speakers: Grammarly, QuillBot, Engram, ProWritingAid, Ginger, Trinka [Updated 2023]

Some technical issues with copy-pasting text or the Chrome extension require time to troubleshoot. The grammar checker has limited features compared to QuillBot's paraphrasing tool, but the paraphraser is more likely to alter the original meaning of the text, and thus requires more manual editing to restore the original meaning.

Source: blog.engram.us

11 Best Speedwrite Alternatives (Free Included) 2022

Quillbot is one of the most well-known paraphrasing tools, and it is my #1 recommended alternative to Speedwrite. Unlike Speedwrite, Quillbot has a free plan, although you will be limited in the number of words you can rewrite at a time (150).

Source: rigorousthemes.com

15 Best QuillBot Alternatives 2021

Rewriter Tools is a great free alternative to QuillBot, as it doesn’t have the same character restrictions that QuillBot has, even though it is free and does not require you to create an account. If you don’t create an account on QuillBot, you will be limited to 400 characters when rephrasing articles.

Source: rigorousthemes.com

Social recommendations and mentions

Based on our record, QuillBot seems to be more popular. It has been mentiond 152 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.

Polygraf.ai mentions (0)

We have not tracked any mentions of Polygraf.ai yet. Tracking of Polygraf.ai recommendations started around Sep 2024.

QuillBot mentions (152)

How to Write Effective Texts for Blogs: Tips and AI Tools to Boost Your Content
QuillBot is an AI tool designed to assist with rephrasing and summarizing content. It helps you reword sentences for clarity, conciseness, and better flow. QuillBot can be especially useful for improving the structure of your blog posts or finding alternative ways to present ideas. - Source: dev.to / 9 months ago
How to Bypass AI Detectors
A tool also known as QuillBot is assumed to bypass AI detection, however this is not the case. While QuillBot may paraphrase your text and bypass plagiarism detectors, it does not bypass AI detectors such as TurnItIn and GPTZero. Phrasly has witnessed multiple users getting caught for using AI after being under the assumption that QuillBot bypasses AI detection. Source: almost 2 years ago
Ai detection
Use rephraser like this https://quillbot.com/ it changes the words to make it look like original so there is no ai detection. Source: almost 2 years ago
Junior Software Dev - getting rejected like there is no tomorrow, please review.
Proofread for spelling, grammar, and punctuation errors (Grammarly, Hemingway Editor, LanguageTool, and Quillbot. Source: about 2 years ago
AI as a Writer's aly? - by Ghanshyam Digital
Artificial intelligence (AI) is rapidly transforming the writing industry. AI-powered tools are now available to help writers with everything from generating ideas to creating high-quality content. In this post, we will discuss the top 10 AI writing tools in 2023. These tools are all easy to use and can help you to improve your writing skills and productivity. Here are our top 10 picks: 1. Quillbot: Quillbot... Source: about 2 years ago