I tested the 5 best AI rewriter tools

We've all been there. Staring at a blinking cursor, trying to make an old blog post feel new again, or just wrestling with a paragraph that sounds off. It's a universal struggle for anyone creating content. Your first instinct might be to reach for a thesaurus, but just swapping out a few words usually makes things sound even more clunky and robotic.

This is where a good AI rewriter can be helpful. These are not your old-school synonym finders. Modern tools use AI to grasp the context of your writing. They can rephrase entire sentences, tweak the tone, and improve clarity without changing your original message. It's almost like having an editor looking over your shoulder.

But what if you need to do more than just refine existing text? For those who want to scale up their content production, tools like the eesel AI blog writer can generate a publish-ready article, complete with images and social proof, from a single idea. In this post, we'll look at the best AI rewriter tools available so you can pick the right one for your needs.

What exactly is an AI rewriter?

An AI rewriter is a tool that uses artificial intelligence, mainly large language models (LLMs) and natural language processing (NLP), to rephrase text. It is an advanced paraphrasing tool. You give it a sentence, a paragraph, or an entire document, and it provides a new version.

The main difference between today's AI rewriters and the "article spinners" of the past is quality. Spinners were designed to swap words to create low-quality copies for SEO purposes. A modern AI rewriter focuses on keeping the original meaning intact while improving the text. This is visually explained in the infographic below.

Its main purpose is to improve clarity, change the tone (like making something more formal or casual), broaden vocabulary, and help ensure content is original. This makes it a useful tool for many people, from students polishing an essay to marketers refining their copy.

How we picked the best AI rewriter tools

To put this list together, we used these tools and judged them on a few things that matter:

• Rewrite Quality: Does the output sound like a human wrote it? We looked for tools that could hold onto the original message while creating natural, readable text that didn't feel robotic.
• Ease of Use: You shouldn't need a lengthy user manual. We gave top marks to platforms with clean, simple interfaces that let you get your work done quickly.
• Customization & Features: The best tools give you options. We looked for the ability to change the tone and style, plus additional features like plagiarism checkers, AI detectors, or SEO features that provide more value.
• Value for Money: Whether it’s free or costs a subscription, a tool has to be worth it. We compared the price against the features and limitations to find the platforms that give you the most for your money.

A quick look at the top AI rewriter tools

Here’s a simple table to give you an idea of how our top picks compare.

The 5 best AI rewriter tools we tested

Alright, let's get into the details of what makes each of these tools tick.

1. eesel AI blog writer: More than just an AI rewriter

The eesel AI blog writer functions as a complete content creation platform. Instead of tweaking existing sentences, it generates a full, SEO-friendly article from a single keyword. We used this tool to grow our own blog from 70k to 750k monthly impressions by publishing over 1,000 articles in just a few months. It handles the research, writing, formatting, and optimization.

This platform is designed for content marketing. It's optimized for AI Answer Engines (AEO), meaning its articles are structured for placement in features like Google AI Overviews. A standout feature is its automatic assets. It creates images and infographics and finds relevant YouTube videos and Reddit quotes to embed. This adds a layer of authority and social proof to the content.

• Pros: It offers a complete solution for content creation, not just rewriting. The research and automatic inclusion of media like images, videos, and Reddit quotes help in creating comprehensive content.
• Cons: This tool may be more than what is needed for simple sentence rephrasing, as it is designed to produce entire long-form blog posts.
• Pricing: You can try it for free to see the quality firsthand. The Early Bird plan is $99 per month for 50 blog posts.

2. QuillBot: Your all-in-one AI rewriter toolkit

QuillBot is a well-known name in the AI writing space. It’s a full suite of tools used by millions of students and professionals. It's a suitable choice when you need more than just a rewriter and want a partner for your whole writing process. From paraphrasing a difficult sentence to checking grammar or summarizing a long article, QuillBot does it all.

Use both. Free version. Grammarly good for spelling. Quilbot better at grammar rules and punctuation.

Reddit

Its best feature is the Paraphraser, which gives you different modes like "Standard," "Fluency," and "Creative" for more control over the final text. It's incredibly flexible, with eight different tools that all work together. It handles over 50 languages for translation and includes an AI Humanizer.

• Pros: Its versatility is a key asset. Having a paraphraser, grammar checker, summarizer, and translator in one platform is convenient. The different rewrite modes provide significant flexibility.
• Cons: The free plan has restrictions. You can only paraphrase 125 words at a time, which can be a limitation for longer text. It is an assistant for existing text and does not generate full articles or find media.
• Pricing: There’s a decent free plan to get you started. Premium plans give you unlimited words, more advanced modes, and faster processing.

3. Grammarly: A great AI rewriter for editing as you go

You've probably heard of Grammarly. It’s a writing assistant that millions of people use to catch typos and grammar mistakes in everything from emails to Google Docs. Over the years, it has also become a solid AI rewriter. Its AI-driven suggestions are a seamless part of its workflow, helping you improve clarity, conciseness, and tone as you type.

Fellow non-English here and I use Grammarly. It helps with the comma rules and keeping me going in the same grammatical tense.

Reddit

Grammarly's biggest strength is how well it integrates into your daily routine. It works in the background, giving you real-time feedback. The tone rewrite suggestions are especially helpful for making sure you sound confident, formal, or friendly, depending on who you're writing for. It also includes a plagiarism checker and citation generator, making it a great all-around editor for polishing your work.

• Pros: It's very convenient, integrating directly into existing workflows without needing to copy and paste text. The real-time suggestions for tone and clarity are useful for making quick improvements.
• Cons: Grammarly is more of an editor than a content creator. It’s focused on improving what you've already written, not generating new versions from a prompt. The free plan is limited to basic grammar and spelling, and you only get 100 AI prompts per month for its generative features.
• Pricing: The free version is great for basic proofreading. The Pro plan starts at $12 per month (billed annually) and gives you access to advanced rewriting features and 2,000 AI prompts.

4. Originality.ai: The AI rewriter for when content integrity is everything

Originality.ai is designed for professionals focused on content integrity. It functions as a verification tool, combining an AI rewriter with an AI detector and a plagiarism checker.

The platform is aimed at publishers, SEO agencies, and academics who need to be certain their content is original and human-written. Its main draw is the all-in-one suite for checking content. It even has different detection models like "Lite" and "Turbo" for deeper scans. The rewriter is an added bonus, but the main focus here is on detection and verification.

• Pros: This tool is well-suited for detecting AI-generated content and checking for plagiarism. Its detector accuracy is a primary feature, and the inclusion of a readability checker and fact-checker adds value.
• Cons: The platform's primary focus is on detection, with rewriting as a secondary feature. The interface is more technical than some alternatives, and the credit-based pricing may take time to understand.
• Pricing: It works on a credit system. You can buy 3,000 credits for a one-time payment of $30. Subscription plans start at $14.95 per month for 2,000 credits.

5. RewriterPro.ai: An AI rewriter for creating undetectable content

RewriterPro.ai is focused on helping users create AI content that is less likely to be flagged by detectors. Its "Humanizer" mode is designed to rewrite text to bypass AI detectors like Turnitin, GPTZero, and Originality.ai. The goal is to produce a natural, human-like voice.

This tool is big on customization. You can pick from different rewriting models, choose from a bunch of tones (like Academic, Creative, or Story-like), tweak fluency levels, and even try to add emotional depth to the text. It's a powerful option if your main goal is to make sure your AI-assisted content reads as human as possible.

• Pros: Its focus on creating undetectable content is its main advantage. The wide range of customization options provides significant control over the final text, which is useful for matching a specific brand voice.
• Cons: The focus on bypassing AI detectors can sometimes alter the original meaning of the text, requiring careful review. The free version is limited to 200 words.
• Pricing: There is a free version with daily limits. Paid plans unlock unlimited rewriting and access to all the advanced features.

How to get the most out of your AI rewriter tool

No matter which tool you end up with, a bit of know-how can make a big difference. Here are a few tips to get better results:


• Give it good material to work with: An AI rewriter can't polish a mess. If your original draft is confusing or poorly written, the AI will struggle. Make sure your source text is clear and accurate before you ask the tool to improve it.
• Always review and edit: This is the most important tip. Never just copy and paste the output without reading it carefully. AI is a fantastic assistant, but it's not perfect. A final human review is crucial to check for accuracy, flow, and to ensure it matches your brand's voice.
• Use it to break writer's block: Stuck on a sentence? Feed it to a rewriter and see five different ways to say the same thing. It’s a great way to get your creative juices flowing again.
• Play with the settings: Don't just use the default mode. Experiment with the different tones, styles, and settings your tool has to offer. You might find a combination that creates the exact voice you're looking for.
• Check for originality: After you've rewritten your text, it's smart to run it through a plagiarism checker. This helps ensure the new version is unique, which is especially important for SEO and academic work.

To see some of these AI rewriter tools in action, check out this video review. It provides a helpful comparison of how different platforms handle rewriting tasks, which can give you a better feel for which one might suit your workflow.

This video review compares four different AI rewriter tools to determine their effectiveness and value.

Go beyond rewriting and start creating

AI rewriters are useful tools for sharpening drafts, overcoming writer's block, and improving your content. Whether you need a quick paraphrase from QuillBot, real-time edits from Grammarly, or an originality check from Originality.ai, there is a tool available to fit different workflows.

For those looking to scale their content strategy beyond rewriting, a tool like the eesel AI blog writer offers a more comprehensive solution. It focuses on creating complete, SEO-optimized, and media-rich articles from a single keyword.

You can try the eesel AI blog writer for free to generate content.