7 Best Free AI Essay Checkers & Graders in 2025

Writing essays can be time-consuming, and it's easy to miss errors when proofreading your own work. Many students struggle to catch grammar mistakes, improve clarity, and ensure their essays are well-structured before submitting them.

This is where AI tools can help. AI-powered essay checkers and graders offer instant feedback, highlighting mistakes and suggesting improvements, saving students time and effort.

If you want a quick and effective way to enhance your writing without waiting for feedback, AI essay checkers & graders are the solution.

Here are the seven best free AI essay checkers and graders you can use to boost your grades in 2025.

Benefits of Using AI to Check & Grade Your Essays

Using AI to check and grade your essays can make the writing process more efficient. It offers a range of benefits that can help students improve their work quickly and effectively.

Here are the key benefits of using AI to check & grade your essays:

• Instant feedback - Get immediate suggestions for improvements without waiting for a review.

• Grammar and spelling checks - Spot errors that you might miss during self-editing.

• Structure and readability analysis - Ensure your essay flows well and is easy to understand.

• Vocabulary improvements - Get suggestions for more precise and professional word choices.

• Plagiarism detection - Avoid accidental plagiarism with built-in checkers.

These advantages make AI essay checkers an invaluable tool for students aiming to submit polished and well-written essays. You can enhance your work in less time while ensuring higher quality and originality.

Can AI Essay Checkers Help With Detecting AI?

A growing concern among students and educators alike is whether essays/research papers written by AI can be detected by AI tools.

Many AI essay checkers are now equipped with the ability to detect text that may have been written by AI, helping educators ensure the originality of student submissions. This is especially important as more students turn to AI writing tools to help with their assignments.

These tools work by analyzing sentence structure, language patterns, and content style to spot AI-generated text. They can flag passages that seem too perfect or too consistent in style, something human writers might not easily replicate.

While AI detection tools are useful, they are not always 100% accurate. Therefore, students should still be careful about relying too much on AI-generated content if they want to avoid any issues with originality.

AI detection features in these tools are a helpful layer of accountability but shouldn’t be the only safeguard students use.

How to Use AI to Check & Grade Essays & Papers

Using AI to check and grade your essays is straightforward, but there are a few steps you should follow to get the most out of these tools.

Below are key tips on how to effectively use AI essay checkers to improve your writing.

Choose the Right AI Tool

The first step is selecting the right tool that fits your needs. Some AI checkers focus more on grammar and spelling, while others provide detailed feedback on structure and readability.

Make sure to pick a tool that offers the features most relevant to your essay or paper. If possible, choose one that includes a plagiarism checker as well.

Check out our suggestions for the best free AI essay checkers & graders.

Add Your Prompt

When using AI tools, many allow you to add a prompt or specify the focus of your essay. This could include keywords, the essay question, or a specific instruction for the tool to follow.

By adding your prompt, you give the AI more context to analyze your essay accurately. This step helps tailor the feedback to your specific writing goals or assignment guidelines.

These tools can even generate full essays for you if you use them properly.

Review Feedback Carefully

After the AI analyzes your essay, it will provide feedback on areas that need improvement. This might include grammar corrections, sentence restructuring, and suggestions for improving clarity.

Take the time to carefully review each suggestion before making changes. Some feedback may not always apply to your writing, so it’s important to use your judgment.

Revise and Run Again

Once you’ve made revisions based on the AI’s feedback, consider running the essay through the tool a second time. This allows you to catch any new errors that may have been introduced during editing.

It also ensures that your revised essay meets the tool's criteria for quality and clarity. Re-running the essay can be a quick way to double-check your work before submission.

AI tools can even help you rewrite essays and provide feedback.

7 Best Free AI Essay Checkers & Graders

1. AI Blaze

First up on our list of the best free AI essay checkers & graders is AI Blaze.

AI Blaze is your personal AI copilot Chrome extension that helps you quickly check your essays, grade them, and give you feedback in seconds!

With AI Blaze, you can use AI to get feedback on your work, rewrite it for you, and boost your grades!

Features

• Check & grade essays with AI using an AI assistant that helps you rewrite text, answer questions, and more.

• Write research papers using AI that can write your essay or paper in any format on any topic in seconds.

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

• 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

2. Quillbot

Quillbot is primarily known for its paraphrasing tool, but it also offers an essay checking feature. It analyzes essays for grammar, punctuation, and style issues, providing students with instant feedback.

After submitting an essay, Quillbot highlights awkward sentences and suggests ways to improve flow and coherence. It’s particularly helpful for students looking to rephrase sections or improve clarity without changing the meaning of their text.

Quillbot is easy to use and offers free access to basic features, making it a popular choice for quick essay improvement.

3. Study Fetch

Study Fetch is an AI-based tool that grades and checks essays for common writing issues. It reviews spelling, grammar, and readability to ensure that students’ essays are clear and concise.

The platform assigns a score to the essay, giving students an idea of how well they might perform based on their writing. After receiving feedback, students can make revisions to improve sentence structure, vocabulary, and flow.

Tools like Study Fetch are a great resource for students who want to check their work before submission.

4. Scribbr

Scribbr is an AI-powered tool focused on helping students improve academic writing by checking for grammar, style, and readability issues.

When students submit an essay, Scribbr analyzes the text and provides clear feedback on clarity, structure, and overall flow. The tool also includes a plagiarism checker to ensure that students’ work is original and properly cited.

Scribbr is especially helpful for students who need a detailed analysis of their academic essays. While it offers premium services, the free version covers essential features to help students enhance their writing.

5. EssayShark

EssayShark offers a free AI essay checker that focuses on correcting common writing errors. It reviews essays for spelling, grammar, and style improvements, giving students instant feedback.

After analyzing the essay, EssayShark provides suggestions on how to improve sentence variety and word choice, helping students make their writing more dynamic.

It’s a straightforward tool designed to give quick, actionable feedback to students who want to polish their essays. EssayShark’s free tool is easy to use and accessible for students who need help with basic proofreading.

6. GPTZero

GPTZero is an AI tool designed specifically to detect AI-generated content in essays. This tool helps students ensure their writing is original and not created by AI systems, which is important in academic settings.

After analyzing an essay, GPTZero flags text that appears to be AI-generated based on patterns and consistency. It doesn’t focus on grammar or style but is essential for students who want to avoid submitting AI-written content.

GPTZero is gaining popularity among students and educators for its accuracy in AI detection.

7. AI Essay Checker

AI Essay Checker is a free tool that reviews essays for grammar, punctuation, and style issues. After submission, it analyzes the text and provides detailed feedback on sentence structure and readability.

The tool also offers a plagiarism detection feature, helping students ensure their work is original. AI Essay Checker’s straightforward interface makes it easy for students to upload their essays and receive immediate feedback.

It’s a useful tool for students looking for a fast and free way to polish their essays before submission.

Boost Your Grades With AI Essay Checkers & Graders!

AI essay checkers and graders are becoming essential tools for students who want to improve their writing. These seven free tools offer a range of features, from grammar checks to plagiarism detection, making it easier to submit high-quality essays.

Whether you're looking for feedback on structure, clarity, or originality, there's an AI tool that can help you get better results with less effort.

Use AI Blaze to check & grade your essays anywhere you work using AI for free!