Written by Scribendi

This Year's Top Human and AI Grammar Checkers 

These days, grammar checkers are more prominent than ever.

Whether you're looking for a human grammar checker with education and experience or a free grammar check powered by AI, deciding on the right editor or editing company to suit your needs can be difficult.

Read More: Editing Sites: 6 Ways to Determine Credibility before You Buy

Do you need a fast grammar corrector? A free English grammar check? A high-quality sentence checker? Or a combination of speed, a fair cost, and high accuracy? 

Read More: How Much Does Editing Cost?

Our list of the best human and AI editing grammar checkers of 2025 below will help you find a high-quality spelling and grammar check.

Human Grammar Checkers

A human grammar checker can cater to your specific needs while editing your document.

Although a human editor is unlikely to provide a free grammar check (unless they offer a free sample), they are generally highly educated and experienced. This allows them to edit your writing with high accuracy while simultaneously analyzing its context, which most editing tools are unable to do on their own (that is, without the help of a human English expert like an editor). 

For example, a human editor will know early on if your document requires editing or proofreading. They'll also pay particular attention to your document's type during the editing process. 

This is important because different document types come with different sets of needs. For instance, an admissions essay edit requires a vastly different approach than a book edit. 

Read More: Editing or Proofreading

In addition, a human editor can provide subjective feedback, which is important, especially for creative writing. However, this also generally means that their edits will take longer to complete than those made by an AI sentence checker.

Finally, a human English text corrector often has subject-matter expertise. In contrast, online AI grammar checks lack such expertise.

1. Scribendi

Scribendi offers the best of both types of grammar checking. With Scribendi, you can get an online grammar check from a human editor. Thanks to Scribendi's Free Sample service, first-time users can receive a free grammar check for 500 words of any document.

Scribendi employs highly educated and experienced grammar checkers. The company's rigorous onboarding process ensures that only the highest-quality editors are selected.

At Scribendi, when you particularly enjoy the work of a specific editor, you can request their services again in the future. Many of Scribendi's editors form long-term professional relationships with their clients, and Scribendi's easy-to-use platform and dedicated Customer Support department facilitates all communication between them.

If there's ever a case when your preferred editor isn't available in the allotted timeframe you've selected, Scribendi will match you to another highly skilled editor who will complete your order before the deadline.

Scribendi's editors enhance the accuracy of their editing through proprietary editing tools. Therefore, in addition to providing targeted feedback about your document, Scribendi's editors will also run it through one of the most accurate AI sentence checkers on the market.

Scribendi's services are among the highest rated on the market in 2025.

Read More: Grammatical Error Correction Tools

Advantages 

• Turnaround times as fast as 2 hours (for documents under 1,000 words)
• Free sample service for new users
• A team of human editors providing services 24/7 aided by Scribendi AI editing tools

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2. Enago

Enago's team of human editors provides 24/7 editing services for the global research community.

All Enago grammar checkers hold a PhD or master's degree and have an average of 19.4 years of academic editing experience. Enago assigns each manuscript to a human English text corrector with expertise related to the broader subject area.

Enago operates using a two-editor model for all spelling and grammar checks, meaning at least two grammar checkers review each manuscript. 

Advantages 

• Subject-matter expertise
• Two-editor model

3. Editage

Editage partners with researchers to offer premium online grammar checks, publication support, and translation services.

Editage assigns each submitted document to a grammar checker who best matches the content's subject matter. You can also collaborate with their English text correctors to ensure they follow your vision while editing your paper.

Editage maintains the quality of their edits with a two-pass revision process.

Advantages 

• Direct collaboration with your editor
• Two-step revision process

4. AJE

American Journal Experts (AJE) offers in-depth scientific and academic editing services. They also provide translation and manuscript formatting services to help you publish your best work.

In addition to providing quality English grammar checks, their team of editors with PhDs can answer questions regarding manuscript submission and publishing processes.

AJE also matches each manuscript with a grammar checker who is a subject-matter expert.

Advantages 

• Subject-matter expert grammar checkers
• Answers to questions about submission and publication

AI Grammar Checkers

AI grammar checkers are becoming increasingly popular due to their ease of use, editing speed, and affordability. Most AI grammar checkers allow for free online grammar checks.

AI editing tools can provide quality editing, but it can be difficult to determine which revisions are actually correct without having a background in grammar. This is important to keep in mind if you wish to use AI grammar correctors without consulting a professional editor.

When AI tools aid human editors, companies can harness the power of editing tools and the experience and education of human editors to provide top-quality edits.

AI editing tools may also fail to consider your document's type or any specific editing needs you may have. In addition, they are unable to provide feedback on the content of your document, especially with regard to subject-matter specifics.

However, in general, AI grammar checkers are becoming increasingly powerful. They typically provide revisions for an entire document within seconds, which is impossible for human grammar checkers.

5. Scribendi AI

Scribendi AI promises grammar checkers they can "halve [their] time spent editing."

As a Microsoft Word add-in grammar checker, Scribendi AI's Grammar Check tool is easy to use. It's also the most advanced online grammar-checking tool on the market.

Scribendi AI's Grammar Check tool makes use of a dataset containing more than 1 billion words and 30 million sentences annotated by professional editors. In doing so, it mirrors the workings of the human brain, offering more accurate suggestions than other editing tools.

Scribendi editors use Scribendi AI, allowing professional English grammar checkers to increase their efficiency, which gives them more time to provide critical feedback on your documents. 

Advantages 

• Fast and easy to use
• Free Microsoft Word add-in
• Most accurate grammatical error correction tool on the market

6. Quillbot

Quillbot's aim is to "enhance any sentence, paragraph, or article using state-of-the-art AI."

Quillbot offers various tools, including a grammar checker and a plagiarism checker. It has Chrome and Word extensions, or you can copy and paste text onto its online platform for a fast English grammar check.

The premium version of this grammar corrector offers various modes for different writing tones or adjusting the length of text. Quillbot also offers synonyms. 

Advantages 

• Free grammar checker
• Plagiarism checker

7. Spell-Check

Microsoft Word's Spell-Check is a tried-and-true grammar checker. Included in Microsoft Word, it's easy to use, intuitive, and catches obvious errors.

Word's sentence corrector works as you type, making Spell-Check a staple for many writers.

Advantages 

• Intuitive
• Works as you type

8. EasyBib

Many people know of EasyBib as a bibliography creator, but it also offers a grammar checker.

EasyBib's grammar corrector scans your paper and provides you with an error count. It provides five free suggestions, and you can unlock additional English grammar check suggestions with an EasyBib Plus subscription.

However, EasyBib's database only includes about 400 grammar and writing style errors, so keep this in mind when comparing English grammar checkers. 

Advantages 

• Plagiarism checker
• Limited error database

Conclusion 

Keep the following advantages and disadvantages in mind when choosing a grammar checker.

Human Grammar Checkers

AI Grammar Checkers

Whether you need a human grammar checker or an AI editing tool, use our list to ensure you get a high-quality spelling and grammar check online.

Read More: 12 Best Editing and Proofreading Services in 2025

Try a Free Sample for 500 Words 

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About the Author

Scribendi's in-house editors work with writers from all over the globe to perfect their writing. They know that no piece of writing is complete without a professional edit, and they love to see a good piece of writing transformed into a great one. Scribendi's in-house editors are unrivaled in both experience and education, having collectively edited millions of words and obtained numerous degrees. They love consuming caffeinated beverages, reading books of various genres, and relaxing in quiet, dimly lit spaces.