Quillbot AI is a writing assistant that employs AI and machine learning to rephrase sentences and improve writing. It offers various tools for users worldwide, including seven different modes of rephrasing sentences to suit their writing needs. Quillbot's AI technology preserves the tone, language, and style of the text while rephrasing.

QuillBot grammar: Content paraphraser and plagiarism checker with AI-powered rewriting tools

  • May 2, 2023

QuillBot was launched in 2017 and has attracted over 50 million users. This AI writing tool provides advanced editing features for writers, particularly academics and publishers, such as a content paraphraser, summarizer, grammar and plagiarism checker.

Quillbot is a paraphrasing tool that rewrites your text to make it unique and better, similar to a thesaurus for complete sentences. Read on to discover whether the free version or premium plan is right for you.

What is Quillbot

Quillbot AI is an online writing assistant that utilizes artificial intelligence and machine learning to rephrase sentences. It offers a range of tools used by millions worldwide to enhance their writing skills.

The software is aptly named after its ability to “re-quill” or rephrase sentences in up to seven different modes. This allows users to choose the most suitable option for their writing needs. Additionally, Quillbot’s AI technology ensures that the tone, language, and style of the text are preserved while paraphrasing.

Other noteworthy features include a vocabulary enhancement tool, an AI-powered thesaurus, integrations with various text editors, a plagiarism checker, a grammar checker, and a summarizing tool. Simply input your text, and Quillbot will generate an alternative paragraph that best suits your needs.

Key features of QuillBot

Let’s take a look at the key features of QuillBot before exploring its use cases.

Chrome Extension: QuillBot AI offers a Chrome extension which enables you to use its features across all online text editors. It analyzes your content and identifies mistakes, and you can access its powerful rephrasing capabilities on any website with a text editor.

Free Trial: QuillBot AI provides a limited free trial without requiring you to create an account. This feature allows you to get a sense of how the tool works.

Rewriting Modes: QuillBot AI offers numerous rephrasing modes in addition to the standard free mode, enabling you to generate text in different tones of voice and get more creative. I personally tested all the modes, and I’ll share my results with you shortly.

Powerful AI: QuillBot AI is powered by a natural language processing model that predicts the output. Unlike simple if-else logic used by other tools, QuillBot AI comprehends your writing and rewrites it as if it were done by a real human writer.

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Use cases of Quillbot

Quillbot is a web-based tool that is perfect for individuals in a variety of fields. One of the ideal uses for Quillbot is for those involved in Search Engine Optimization. If you are a digital marketer, blogger, or SEO writer, Quillbot can help you optimize your online content. It is one of the few content generation tools available that can paraphrase your text to make it more original, engaging, and concise.

For individuals involved in SEO writing, avoiding duplicate content is key. Google automatically lowers SEO rankings if they find plagiarized works. Quillbot’s Citation Generator and Rephraser tools can prevent you from getting into trouble by ensuring that your content is unique and original.

Another ideal use for Quillbot is for academic writing. If you frequently work with source materials, the rephraser tool can help you quickly turn around online content while also offering a vast extent of synonyms that will prevent your work from being flagged as plagiarism. In addition, Quillbot offers in-text and complete citations for these references to ensure that your work stays ethical. You no longer need to consult your style guide when citing sources because the app automatically produces your bibliography.

Quillbot can also be beneficial for media and journalism professionals. Whether you work in print or digital media, it can save you lots of time polishing hot topics that you are writing about. Depending on the audience preference, it’s a quick and easy way to make your journalistic pieces more conversational, formal, or shorter. The variety of writing modes allows you to avoid style errors, and you can choose from several options on how to rephrase your pieces. Additionally, Quillbot can be used for press-related materials. You can summarize long bodies of text so that readers can focus on the essential elements.

Overall, Quillbot is a versatile tool that can benefit individuals in various industries. Whether you need to paraphrase text, summarize content, generate new ideas, or check your work for spelling and grammar errors, Quillbot can provide the support and tools you need to make your work stand out.

QuillBot pricing

Quillbot’s free plan offers limited paraphrasing and summarizing features, along with a character limit. To unlock the full capabilities of Quillbot, you’ll need to subscribe to one of their paid plans.

The pricing for Quillbot’s paid plans is straightforward: a monthly premium subscription costs $20, with discounts available for semi-annual or annual subscriptions. The plagiarism checker included in the paid plans can scan up to 20 pages per month for $20 (or about 250 words), with an additional 25 pages available for $7.45 cents. Quillbot also offers a 10% money-back guarantee within 72 hours of payment.

Pros and Cons of QuillBot

Pros of QuillBot.

Free trial.
QuillBot offers a free trial that is easy to activate, and it allows users to experiment with the standard plan to get a feel for how paraphrasing works with QuillBot’s powerful AI.

Simple and easy to use.
QuillBot is very user-friendly, requiring only a simple copy-and-paste of the text into the paraphrase view. Users can also adjust the tone of voice and other paraphrasing options with ease.

Chrome extension.
QuillBot has a Chrome extension that works anywhere you do, making it easy to use while working on various online text editors.

Cons of QuillBot.

Limited free trial and pricey premium plan.
Although QuillBot offers a free trial, it is quite limited. Users can only access the standard paraphrasing features on the free trial, and the other paraphrasing tools are quite costly thanks to the pricey premium plan.

Poor quality of some outputs.
While QuillBot generally does an excellent job producing paraphrased content, it sometimes produces sentences that are worse than the original ones. This is particularly concerning for paying users.

No other features.
QuillBot is exclusively an AI writing tool that focuses solely on paraphrasing. However, the tool’s cost is quite high, and it lacks the additional features found in other similar tools like blog post generators, name generators, and more.


QuillBot is a good tool for anyone who needs to paraphrase text quickly and efficiently. However, it is not without its limitations, and users should consider both the pros and cons before making a purchase decision.