7 Best Free AI Proofreaders & Checkers for Students in 2025

Essay writing can feel overwhelming—especially when you're staring at a draft full of red lines, unclear sentences, and sections that just don’t sound right.

You know what you want to say, but getting the grammar, tone, and structure right is a whole other challenge. Proofreading takes time, and even then, it's easy to miss mistakes.

That’s where using an AI proofreader can really help. These tools catch errors, suggest better wording, and make sure your writing sounds clear and original.

If proofreading feels like the hardest part of the assignment, this guide is for you.

In this guide, we'll cover everything you need to know about AI proofreaders and list out 7 free options you can use to save time in 2025. Let's dive in!

What is an AI Proofreader?

An AI proof reader is a tool that checks writing for errors and gives feedback. It uses artificial intelligence to review grammar, spelling, clarity, and more.

Many of these tools also act as AI checkers or AI plagiarism checkers. They’re especially useful for students who want to polish their papers before submitting.

You don’t need to be a tech expert to use them. Most are simple: copy your text, paste it in, and the tool does the rest.

What Do AI Proofreaders Do?

AI proofreading tools do more than just fix typos. They help students improve the quality of their writing across several areas.

Here are a few things that AI proofreaders can help with:

• AI Checking - Highlights grammar, punctuation, and sentence clarity issues.

• AI Detection - Spots sentences that sound too robotic or AI-generated.

• Plagiarism Checker - Checks if content matches other sources across the web.

• Feedback/Grading - Some tools give a basic score or detailed feedback like an AI essay grader.

Most students use these tools to make sure their writing is clear, original, and ready for submission.

Benefits of Using AI Proofreading Tools

Using AI proofreading tools is an efficient way to improve your writing without spending hours editing. These tools are built to save time and reduce stress.

Here are the benefits of using an AI proof reader:

• Catch Mistakes Fast - Quickly spot grammar and spelling errors before submitting your paper.

• Save Some Time - Skip the long editing process and let the tool scan your work in seconds.

• Rewrite Sentences That Sound Off - Use built-in AI essay rewriter features to polish awkward wording.

• Avoid Plagiarism - Built-in AI plagiarism checkers help ensure your content is original.

• Get Feedback & Tutoring - Some tools grade your writing or give suggestions, similar to an AI essay grader.

Using these tools regularly can help students become better writers over time. If you need help getting started, they can even help you generate an outline for your paper!

Things to Look for in an AI Proofreader

Not all AI proof readers are the same. Before picking one, make sure it fits what you need for your writing.

Here are five things we recommend looking for when you are choosing an AI proofreader:

• Look for grammar and spelling correction tools.

• Choose one that can rewrite or improve sentences.

• Make sure it includes an AI checker or detection for AI-generated content.

• Check if it has an AI plagiarism checker built in.

• See if it offers feedback or scoring like an AI essay grader.

Free versions are good enough for most students, but always double-check what features are included.

Also, some tools are great research assistants and some help you with studying. Find the one that works for your needs.

7 Best AI Proofreaders in 2025

With so many tools available, it can be hard to know which AI proof reader is actually worth using. Some focus on grammar, others on rewriting or grading.

Here's our list of the seven best AI proofreaders you can use to save time:

AI Blaze

First up on our list of the best AI proofreaders is AI Blaze.

AI Blaze is your personal AI writing and studying assistant that helps you check your essay, rewrite sections, and even generate citations!

With AI Blaze, you can summarize articles, write papers/essays, and check them for mistakes, structure issues, and content suggestions anywhere you work using AI!

Features

• Write & improve papers using AI - AI Blaze can write and improve your essay or paper to help you streamline the writing process.

• Proofread your essays with AI - AI Blaze helps you fix mistakes, improve your thesis statement, improve structure, and give your essay a boost.

• Summarize any text, image, article, or PDF - Generate notes and summaries on any website with AI.

• Instantly use GPT-4 on any site with keyboard shortcuts and a dynamic AI sidebar assistant!

• AI Blaze is free! - Forget about annoying licenses or subscriptions

Wordvice AI

Wordvice AI focuses on academic writing, making it useful for essays, reports, and research papers. It offers suggestions to improve clarity and sentence structure without changing the meaning of the content.

Tools like Wordvice help rewrite wordy or confusing parts and highlights areas that may sound too casual for school assignments.

While it doesn't provide grading, it helps polish writing for clarity and flow.

Phrasly AI

Phrasly AI is designed to help students rephrase sentences that feel repetitive or confusing. You can paste in a sentence and get different versions that keep the same meaning.

Tools like Phrasly are especially useful for making your writing sound more natural without changing your ideas.

The tool also includes basic proofreading features, but it doesn’t check for plagiarism or AI content.

Quillbot AI

Quillbot AI is best known for its rephrasing and rewriting tools. Students can use different modes to match the tone of their assignments, like making things sound more formal or fluent.

It checks grammar and spelling as you rewrite, which makes it a helpful option for editing long essays.

PaperRater

PaperRater offers grammar and spelling checks along with a scoring system that gives basic feedback on your writing. It looks at your content and suggests ways to improve word choice and sentence structure.

Tools like PaperRater are useful for checking for mistakes before you submit.

While the interface might feel a bit outdated, it still works for students who need quick proofreading help.

DeepAI

DeepAI includes free tools for grammar correction, paraphrasing, and sentence restructuring. It doesn’t offer grading or plagiarism detection, but it’s easy to use for small edits.

Students can paste in a few paragraphs and get suggestions for clarity and flow. The tool works well when you need fast, basic proofreading before submitting a draft.

Grammarly

Grammarly helps with grammar (no surprise there), punctuation, and tone. It checks writing in real time and highlights areas that could be clearer or more direct.

Students can use the free version for basic proofreading, while the premium version includes AI plagiarism detection and advanced suggestions.

Although it doesn’t grade essays, it still helps make writing more polished and easy to read.

Prompts to Use With AI Proofreading Tools

AI proofreading tools work best when you give them clear instructions. Better prompts = better results. Simple right?

Here are a few prompts you can use to get more out of your AI proofreader:

• Fix grammar, spelling, and punctuation errors in this paragraph

• Rewrite this to sound more formal and academic for a college essay

• Improve the clarity and flow without changing the meaning

• Check this for any AI-generated content and highlight anything that sounds unnatural

• Scan this text for possible plagiarism and suggest changes if needed

• Give feedback on this essay like a teacher would and include a score out of 10

• Help me rewrite this to avoid repetition and make it more concise

• Review this introduction and suggest a stronger hook or opening sentence

• Point out weak arguments and suggest how I can make them more convincing

• Check if my tone is appropriate for a research paper and suggest adjustments

Make Writing Easier in 2025

AI proof readers can save time, reduce stress, and help students write better. Whether you're looking to fix grammar, check for plagiarism, or rewrite an essay, there's a free tool that fits the job.

Use them as part of your writing process to catch mistakes early and improve your work with every assignment.

To recap, our suggestion for the best free AI proofreader is AI Blaze. AI Blaze is your personal AI writing and studying assistant that helps you improve your writing, proofread it and provide feedback, help you study, and much more. Plus, AI Blaze is 100% free for students and works on any website!