The best AI grammar checkers and rewording tools in 2023 | Zapier (2023)

With all the hype around ChatGPT, it'd be easy to forget that AI tools have existed for a while. One area where AI has been working its magic for years is in AI grammar checkers.

We're not talking about AI writing generators here—these are purely AI editing and rewording tools designed to correct, refine, and improve your content. I use some of these apps daily as a prompt to make my writing more concise and, hopefully, more enjoyable.

So, if you're looking for an AI grammar checker or rewording tool to help you spot and fix typos, improve your grammar, or take your content to the next level, you've come to the right place. I considered dozens of apps and did in-depth testing on the top contenders to narrow it down to these six apps.

The best AI grammar checkers and rewording tools

  • Grammarly for all-around editing

  • Wordtune for rewriting, shortening, and expanding content

  • ProWritingAid for informative evaluation reports

  • Microsoft Editor for Microsoft 365 integration

  • WordRake for professionals wanting clarity

  • LanguageTool for multilingual writers

What makes the best AI grammar checker and rewording tool?

How we evaluate and test apps

All of our best apps roundups are written by humans who've spent much of their careers using, testing, and writing about software. We spend dozens of hours researching and testing apps, using each app as it's intended to be used and evaluating it against the criteria we set for the category. We're never paid for placement in our articles from any app or for links to any site—we value the trust readers put in us to offer authentic evaluations of the categories and apps we review. For more details on our process, read the full rundown of how we select apps to feature on the Zapier blog.

There are plenty of lists of the best AI grammar checkers, so what makes this one different? For starters, many of those lists become intertwined with AI generative writing apps, but this one steers clear and focuses primarily on AI content editing apps. Second, I didn't just read these apps' marketing materials and customer reviews. I spent dozens of hours researching and testing the best AI rewording tools, paraphrasing apps, grammar checkers, and other similar tools.

For transparency, I've used some of these apps for many years in my writing career. But I was also keen to review the competition and see what I was potentially missing out on. For each one, I signed up and ran the editor through its paces, testing various scenarios, like spotting and fixing spelling and grammar errors or cutting fluff to make the text more concise.

I was also mindful that some editing apps do one thing well, like paraphrasing, while others cover several bases. In my experience, I've not found one editing app that does everything well. And that's fine, as long as you know how to use a couple in tandem.

As I was testing the apps, here's what I was looking for:

  • Apps that focus on AI editing, not AI writing. As mentioned above, some tools focus on generative AI writing with a few editing features thrown in. Those tools didn't make the list.

  • Spelling and grammar checker. This is probably the most common feature of AI content editing apps, but it's also the most unpredictable, with false negatives and positives.

  • Options to create a custom lexicon/style guide. In some situations, especially when working in larger teams, you'll want to build a custom style guide, so everyone writes consistently.

  • The ability to rewrite, shorten, or lengthen content. Also known as paraphrasing or rewording, this is an invaluable feature when you want to write concisely or expand on a point.

    (Video) Best Ai Grammar Checker

  • Apps that check for plagiarism. A plagiarism checker scours the internet and highlights possible sources to ensure that no content has been taken from another source without permission.

Overall, I whittled the list down from 30 possibles to the best 6 AI grammar checkers and rewording tools.

Best all-around AI grammar checker


The best AI grammar checkers and rewording tools in 2023 | Zapier (1)

Grammarly works on multiple desktop and mobile platforms, browsers, and apps. It's a comprehensive AI editing tool covering all our features except paraphrasing. That said, it does prompt rewrites for conciseness and clarity automatically—it's just that you can't highlight a sentence or paragraph and ask it to rewrite/shorten/lengthen at will. But if you want to quickly reword sentences, you can use its free online paraphrasing tool.

As a long-time user of Grammarly, I'm familiar with its quirks. Sometimes the suggestions are off or totally wrong—but, hey, it's a machine, not a human, and it suggests more positives than negatives. One thing I like is the flexibility to switch the Chrome browser extension on or off. So, for example, I keep it switched off while writing in Google Docs, so I don't get interrupted with suggestions. I much prefer to copy the text into the desktop editor afterward and work in editing mode then. The browser extension also doesn't play well in WordPress, so I switch it off there again.

You'll have to upgrade to the business plan if you want to create a style guide for your organization. So, for example, could specify that employees use "" when writing about their company.

The best AI grammar checkers and rewording tools in 2023 | Zapier (2)

The business plan also lets you configure snippets and brand tones, and provides an analytics dashboard so that you can identify team writing trends.

The recent addition of a generative AI tool, GrammarlyGO, adds a few extra editing features, including options to identify gaps in writing, offer general improvement ideas, and pick out the main point. They aren't particularly insightful (yet), but it's nice to see Grammarly continuing to develop its tools.

Grammarly pricing: Free plan available, then $12/month for the Premium plan and $15/member/month (with at least 3 team members) for the Business plan.

Best rewording tool for rewriting, shortening, or expanding content


The best AI grammar checkers and rewording tools in 2023 | Zapier (3)

Wordtune is the perfect companion to Grammarly. While it doesn't check for plagiarism, it excels at rewriting, shortening, and expanding your content. It can even make suggestions for a more casual or formal tone.

You can use it as an online editor—where you also get spelling and grammar suggestions—an add-in for Microsoft Word, or a Chrome extension. For example, working in Google Docs, it just hovers on-screen, waiting for you to put it to work. Simply highlight the text you want to rewrite, and it delivers several alternatives.

The best AI grammar checkers and rewording tools in 2023 | Zapier (4)

(Video) ChatGPT vs. Grammarly: What's Best?

It's a great option for when you need a fresh take on what you've been working on.

Wordtune pricing: There's a free version limited to 10 rewrites per day, which is a good starting point. But the premium version—$24.99/month or $119.88/year— gives you unlimited access to all the features and the ability to rewrite entire paragraphs.

Best AI grammar checker for evaluation reports


The best AI grammar checkers and rewording tools in 2023 | Zapier (5)

ProWritingAid works along the same lines as Grammarly, including the online editor where you can copy/paste your text or upload a document to work on. The interface is more crowded than Grammarly, with lots of reports and scores in the margins. It can be a little distracting initially, but it did highlight errors that Grammarly missed. For example, it stipulates that en dashes shouldn't have a space on either side.

The best AI grammar checkers and rewording tools in 2023 | Zapier (6)

There are also desktop apps for Windows and Mac, browser extensions, and add-ons for Microsoft Word and Google Docs. I couldn't get the Chrome extension to work for Google Docs—I had to install the specific plug-in. And even then, you can only generate a Summary Report or an Improve Document Report like you get in the online editor, so it didn't save time by offering in-line suggestions.

One major plus for ProWritingAid is that you can create your custom style guide in the premium version—no need to upgrade further to a team version like you'd need to do with Grammarly. I tested this by adding a rule about not having spaces on either side of an em dash on the Zapier blog. For example:

  • INCORRECT: You can use it as an online editor — where you get spelling and grammar suggestions — an add-in for MS Word, or a Chrome extension.

  • CORRECT: You can use it as an online editor—where you get spelling and grammar suggestions—an add-in for MS Word, or a Chrome extension.

ProWritingAid also has a Rephraser tool (currently in beta), which works like Wordtune and offers several rewriting suggestions per sentence.

ProWritingAid pricing: There's a free version limited to 500 words and 10 rephrases per day, giving you basic writing suggestions. But you'll want the unlimited premium version with extra functionality to "edit like a pro."

Best integrated AI grammar checker for Microsoft 365

Microsoft Editor

The best AI grammar checkers and rewording tools in 2023 | Zapier (7)

Microsoft Editor is only available on macOS and Windows desktop devices or as a free browser extension for Chrome and Edge. You can use a free Microsoft account to see basic spelling and grammar checks, but for premium features, you'll need to subscribe to Microsoft 365.

Here, you can define your writing style with grammar and refinements. For example, you can check for things like passive voice, adverb placement, and adjective order, or make your writing more formal or concise.

(Video) 5 Best AI Rewriter Tools in 2023

You can use Microsoft Editor in Gmail, Outlook, LinkedIn, and other social media platforms on the web, but for serious editing, you'll want to use Microsoft Word. Here, you can activate the sidebar menu to see an overall score with corrections and refinements, plus an option to check for similarity (plagiarism).

Microsoft Editor pricing: There's a free version with basic spelling and grammar checks. The premium version is available with a Microsoft 365 subscription, starting from $6.99/month.

Best AI grammar checker for brevity and simplicity


The best AI grammar checkers and rewording tools in 2023 | Zapier (8)

Wordrake edits for brevity and simplicity. You can choose:

  • Brevity mode to prioritize succinct writing

  • Simplicity mode to prioritize familiar word choices

  • Or both options to maximize your editing suggestions

The main caveat: it only works in Microsoft Word and Outlook. It uses the familiar Microsoft Word track-changes style to highlight possible improvements, which you then accept or reject.

WordRake targets professionals, like lawyers, who need to tighten legal briefs. (Imagine a world without legal jargon!) For example, it can:

  • Edit for plain language and reduce jargon and legalese

  • Cut throat-clearing introductory phrases

  • Remove unnecessary descriptive words and modifiers

  • Correct nominalizations and wordy adjective phrases

  • Remove redundancies and correct usage errors

  • Catch high-level grammar and punctuation mistakes

  • Edit conversational language to be more professional

  • Reduce wordiness and meet word counts

    (Video) Best Grammar Checker: 8 Top Choices

It does a very specific job, but a very important one. And it does it well.

WordRake pricing: There's a 7-day free trial; then it's $17/month ($129/year) for Microsoft Word (Mac or Windows) or $24/month ($199/year) for Microsoft Word and Outlook (Windows only).

Best AI grammar checker for multilingual writers


The best AI grammar checkers and rewording tools in 2023 | Zapier (9)

LanguageTool is a multilingual grammar, style, and spell checker with an AI-powered sentence rephraser and custom style guide. The rephrased suggestions are as good as other apps like Wordtune, and the level of grammar and spelling matches Grammarly.

You can copy your text or upload a Word document into the online editor to check and fix errors or paraphrase it. Once you've made your changes, you can export it as a Word document or copy and paste your text back into your doc. Alternatively, you can install the software on multiple platforms, including:

  • Desktop apps: macOS, Windows

  • Browser extensions: Chrome, Edge, Firefox, Safari, Opera

  • Office plugins: Google Docs, Microsoft Word, OpenOffice, LibreOffice

  • Email add-ons: Gmail, Apple Mail, Thunderbird

Another nice feature in the settings is the option to select the Oxford comma in British English. (It's standard on other English varieties like U.S. and Canadian.) I also found the style guide worked as well as Grammarly and ProWritingAid when I performed similar tests.

Enter a text in a different language, and the app auto-detects the change and makes suggestions. For example, I pasted in some Spanish text, and it instantly switched to Spanish and highlighted some spelling and grammar errors.

LanguageTool pricing: Free plan available; then $24.99/month for individuals or $56.90/user/year for small teams of up to 20 members.

Should you use an AI grammar checker or rewording tool?

As a freelance writer, I rely on AI content editing apps to highlight areas for improvement in my first drafts. Do I accept all the suggestions? No, I don't. And that's the rub.

AI editing tools are an aid—they're not perfect. But between me and them, I can produce a solid first draft before my editors apply their superpowers. So my advice is to take them for a spin. Most have a free trial or free version to get you started, and then you can choose the premium AI grammar checker or rewording tool that works best for you.

Related reading:

  • How to self-edit your marketing writing

  • 6 ways to make your content stand out from AI writing

    (Video) Top 5 Online Paraphrasing Tools 2023 | Online Rewrite tool | Aazz Ahmad

  • Create a digital assistant with Zapier and AI


The best AI grammar checkers and rewording tools in 2023 | Zapier? ›

Trinka is an AI-powered free grammar checker and language enhancement writing assistant designed for academic and technical writing. In addition to advanced grammar checks, Trinka improves your writing for vocabulary, tone, syntax, and more.

Is there an AI app that checks grammar? ›

Trinka is an AI-powered free grammar checker and language enhancement writing assistant designed for academic and technical writing. In addition to advanced grammar checks, Trinka improves your writing for vocabulary, tone, syntax, and more.

What is the app that checks spelling and grammar? ›

Grammarly's spell-checker helps you write confidently in more than 500,000 apps and websites on your desktop and phone. Ordinary spell-checker apps tell you if a word is misspelled, but Grammarly also lets you know when you're using a correctly spelled word in the wrong context.

Which app offers grammar correction suggestions? ›

#1) Grammarly

It offers numerous writing styles, suggestions for grammar, vocabulary, and syntax. This active voice check software allows you to add words to your dictionary. Features: It helps you to detect spell mistakes and also offers suggestions for using the right pair of words.

What is the AI tool for correcting writing? ›

Wordvice AI Proofreader is more than just a grammar checker. It is a real-time, all-in-one text editor that suggests vocabulary corrections at the sentence level. The more you use the AI Proofreader, the better your English writing will become.

Which is the best app to check grammar mistakes? ›

Grammarly works on 500,000+ websites and applications on your Windows or Mac computer, iOS and Android mobile devices, word processors and email clients, and more. Use it where you're writing, or add your text to The Grammarly Editor.

Is there a spell check better than Grammarly? ›

The Top 13 Alternatives to Grammarly
  1. ProWritingAid. ProWritingAid is a top Grammarly competitor with many of the same features. ...
  2. Hemingway App. Ernest Hemingway was known for his concise and direct writing style. ...
  3. WhiteSmoke. ...
  4. Readable. ...
  5. WordTune. ...
  6. Ginger. ...
  7. Sapling. ...
  8. PaperRater.
May 4, 2023

Is there a free tool for checking grammar? ›

Use QuillBot's free online grammar checker tool to perfect your English by reviewing your writing for grammar, spelling, and punctuation errors. Writing can be difficult, but perfecting your work with our grammar and sentence checker is easy!

Is Quillbot grammar checker better than Grammarly? ›

Quillbot is a better option if you're looking primarily for a paraphrasing tool, and Grammarly is a better option if you're looking for a more robust grammar-checking AI. ProWritingAid provides even more advanced analysis than either Grammarly or Quillbot.

What is the free spell checker app? ›

You Might Also Like
  • Proofreader Grammar Checker. Productivity.
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  • Ginger Writer. Productivity.
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  • Grammarly - Keyboard & Editor. Productivity.

What is the best application for correcting English sentences? ›

Top English Grammar Checkers and Sentence Correction Tools
  • Microsoft Word.
  • Ref-n-Write.
  • Grammarly.
  • ProWritingAid.
  • CorrectEnglish.
  • StyleWriter.
  • WhiteSmoke.
  • Ginger Software.
Jan 26, 2018

How reliable is grammar checker? ›

Grammar Checker will only correct common words. However, they are completely failed to perform when it comes to detecting words of incorrect usage.

What is the AI that can reword text? ›

QuillBot's Paraphraser helps you write better, faster, and smarter. Our rewording tool is free and easy to use—with just the click of a button, the paraphrasing tool will rephrase your sentence, paragraph, essay, or article to your liking, with many options available to customize and perfect the reworded text.

Is there a free AI tool to rewrite content? ›

AI paragraphs rewriter is a tool that helps you to write unique and plagiarism free content. The AI-powered tool is based on the basic principles of Artificial Intelligence (AI). The Artificial intelligence of the tool comprehends the meaning of the original text provided in the article for creating unique content.

What is the best AI writing generator? ›

The top AI text generators
Notion AISmart CopyNeuralText
6 more rows
May 19, 2023

Is there a website that will correct grammar sentences? ›

A Free Grammar Checker Available Everywhere

Ginger automatically detects mistakes and provides suggestions. Paraphrase your sentences and find alternative synonyms to make your writing stand out even more.

What is the app that makes sentences better? ›

QuillBot is a paraphrasing and summarizing tool that helps millions of students and professionals cut their writing time by more than half using state-of-the-art AI to rewrite any sentence, paragraph, or article.

Which algorithm is best for spell check? ›

The Damerau-Levenshtein algorithm method is most often used for spelling checkers.

How do I make Grammarly auto correct everything? ›

Does Grammarly offer autocorrect?
  1. Autocorrect is currently available in the Grammarly browser extension.
  2. You can switch autocorrect on or off by clicking the Grammarly button in your browser's toolbar and toggling the switch next to Correct spelling automatically:

What is the best version of Grammarly? ›

The free version of Grammarly can catch basic mistakes, but if you're looking to take advantage of its more sophisticated features, you'll need to upgrade to the Premium version.

What is the best free grammar checker Chrome? ›

Grammarly for Chrome improves grammar, clarity, and more as you write on your favorite sites. Write confidently across the web.

What is the website that corrects English texts? ›

LanguageTool is a multilingual spelling, style, and grammar checker that helps correct or paraphrase texts. Enter or paste your text here to check it for grammar and punctuation mistakes …

How to do Grammar, check with Microsoft Word? ›

On the Review tab, click Spelling & Grammar. If Word finds a potential error, the Spelling & Grammar dialog box will open, spelling errors will be shown as red text, and grammatical errors will be shown as green text.

How do I make word automatically correct Spelling? ›

Go to File > Options > Proofing and select AutoCorrect Options.

Where is spell check in Google Docs? ›

Spell-check your document
  1. Open the Google Docs app .
  2. Open a document.
  3. Tap Edit .
  4. In the top right, tap More. Spellcheck.
  5. Spelling suggestions will show at the bottom: To use a suggested spelling, tap Change. To ignore a suggestion, tap Ignore. ...
  6. To hide "Spellcheck", tap Close .

Is using QuillBot considered cheating? ›

QuillBot is designed to write with the user, strengthening original ideas and text. If a user takes someone else's writing and tries to pass it off as their own, that is considered cheating, whether QuillBot was used or not.

What is the disadvantage of QuillBot? ›

Quillbot Cons

GPT-3 AI writing is not available. Character limitation for free as well as paid plans. No AI Content Detection; Manual intervention is often needed.

Is there a better website than QuillBot? ›'s top 5 competitors in May 2023 are:,,,, and more.

Is Microsoft Editor spelling & Grammar Checker free? ›

It's free to use for spelling and grammar checking but you can get premium features by subscribing to Microsoft 365.

Is there an app to improve spelling? ›

SpellingCity provides the repeated practice and multiple exposure proven to help kids learn new spelling words and remember them long-term! Better yet, kids are having fun while they learn!

How can I improve my spelling for free? ›

Let's take a look at some of the best apps and games for learning spellings that help adults in improving these basic writing and reading skills.
  1. Scrabble® GO. ...
  2. Ultimate English Spelling Quiz. ...
  3. Spelling Bee Lists. ...
  4. BattleText - Chat Battles. ...
  5. Spelling Words Challenge Games. ...
  6. Word Beach. ...
  7. Spell Mania.

What is the most effective way to revise sentence? ›

Need Help Revising Sentences? Try These 10 Top Exercises
  • Swap The Passive Voice for the Active Voice.
  • Use the Correct Point of View.
  • Challenge Yourself with New Words.
  • Limit Your Words.
  • Use a Grammar Checker.
  • Read Your Work Aloud.
  • Separate Writing and Proofreading.
  • Print Out Your Work.
Apr 26, 2021

Does Grammarly work with AI? ›

Grammarly's AI system combines machine learning with a variety of natural language processing approaches. Human language has many levels at which it can be analyzed and processed: from characters and individual words through grammatical structures and sentences, even paragraphs or full texts.

How do you check if an essay is written by AI? ›

GLTR is currently the most visual way to predict if casual portions of text have been written with AI. To use GLTR, simply copy and paste a piece of text into the input box and hit "analyze."

How does AI grammar checker work? ›

The AI Behind Grammar Checkers

Online AI describes how software uses techniques to teach itself ( machine learning ) through repeated uses and draw on vast sources of data about details. This approach works particularly well with language and grammar.

How do AI checkers work? ›

AI detectors try to find text that looks like it was generated by an AI writing tool. They do this by measuring specific characteristics of the text (perplexity and burstiness)—not by comparing it to a database. Plagiarism checkers try to find text that is copied from a different source.

Is there a better alternative to Grammarly? ›

For users who require advanced features, ProWritingAid, WhiteSmoke, and Ginger are the best alternatives to Grammarly. For those, who want to perform translations and error checking in multiple languages the LanguageTool & Reverso are the best options.

Is QuillBot an AI tool? ›

QuillBot's AI-powered paraphrasing tool will enhance your writing. Your words matter, and our paraphrasing tool is designed to ensure you use the right ones.

Is ChatGPT better than Grammarly? ›

According to a research paper by Lyu et al, ChatGPT doesn't perform as well on baseline writing and editing tasks versus Grammarly, particularly on long sentences. They wrote, “Human evaluation quantitatively demonstrates that ChatGPT produces less under-correction or miscorrection issues but more over-corrections.”“

What is the best free AI essay writer? ›

The three most easy-to-use and reliable tools are,, and These AI-powered tools can save time and effort in generating content, help users overcome writer's block, and offer suggestions for improving writing quality.

What is the new AI website that writes essays? ›

Writing brilliant long form content doesn't have to feel like a chore. Moonbeam is the only AI writing assistant specifically trained to help you write essays, stories, articles, blogs, and other long form content.

What is the new AI that makes essays? ›

ChatGPT (Generative Pre-trained Transformer) is the latest viral sensation out of San Francisco-based startup OpenAI. It's a free online tool trained on millions of pages of writing from all corners of the internet to understand and respond to text-based queries in just about any style you want.

Is there a free spell checker for AI? ›

Trinka is an AI-powered English grammar checker and language enhancement writing assistant designed for academic and technical writing. Trinka corrects contextual spelling mistakes and advanced grammar errors by providing writing suggestions in real-time.

What is the disadvantage of grammar checker? ›

It may miss most of the things, especially when dealing with idioms. One of the main con of the Grammar Checker is it only checks sentence structure. It will not help you produce better ideas and not group your ideas into a logical sentence for better outcomes.

Can Turnitin detect AI writing? ›

Does Turnitin offer a solution to detect AI writing? Yes. Turnitin has released its AI writing detection capabilities to help educators uphold academic integrity while ensuring that students are treated fairly. We have added an AI writing indicator to the Similarity Report.

Is there an unbeatable checkers AI? ›

The new research proves that Chinook is invincible in the traditional game of checkers. But in most tournament play, a match starts with three moves chosen at random.

How accurate are AI checkers? ›

The company claims its tool is 98% accurate in detecting content created by AI. A test of the tool using various forms of ChatGPT-generated copy revealed remarkable accuracy. Whether or not this technology curbs student cheating remains to be seen.

Is Winston AI better than Turnitin? ›

Winston AI's algorithm provides far better results in avoiding false positives by having trained its model on larger datasets and large language models.


1. The 10 Best AI Writing Tools 2023
(Dr Alex Young)
2. Chat GPT Detector: How to Check and Remove Plagiarism Like a Pro!
(Website So Simple)
3. Top 5 Free Grammarly Alternatives (Spell Checkers / Grammar Checkers)
4. Best Proofreading Software: 6 Top Options
(Become A Writer Today)
5. The 7 Best AI Writing Tools (Compared And Reviewed)
(Chris Hardy)
6. Grammarly vs. LanguageTool: Which Tool is Best?
(Become A Writer Today)


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