Grammarly vs Wordtune: Which AI writing assistant is right for you?

AI writing assistants are a lot more than just spell-checkers these days. They've grown into smart tools that can help you rewrite sentences, tweak your tone, and generally make your writing better. It’s not just about fixing commas anymore; it’s about making sure your message hits the mark.

But with all that power, a new question pops up: which tool should you trust? The whole Grammarly vs Wordtune debate isn't just about grammar versus style. It's about how well these tools stick to your original meaning, keep things clear, and earn your confidence. The right choice really depends on what you're writing, whether it's a business proposal, a blog post, or a research paper.

And while tools like Grammarly and Wordtune are great for polishing what you've already written, there's another piece to the puzzle. AI content generation platforms like the eesel AI blog writer can create entire, publish-ready blog posts from just a keyword, helping you scale your content from the very beginning.

What is Grammarly?

You've probably run into Grammarly before. It's one of the most popular writing assistants out there, known for its top-notch grammar, spelling, and punctuation checks. But it’s grown into something much bigger. Now, it offers suggestions on your tone, clarity, and overall style based on goals you can set, like "Business" or "Academic."

Behind the scenes, Grammarly uses a closed-loop language model that’s been trained to be incredibly consistent with grammar rules. This makes it a reliable partner for professional and technical writing where you can't afford any slip-ups. Plus, it’s available pretty much everywhere, integrating smoothly into your browser, email clients like Gmail and Outlook, and even desktop apps like Microsoft Word.

What is Wordtune?

Wordtune approaches writing from a different perspective. It’s an AI-powered tool focused on rephrasing and rewriting your sentences to improve their clarity, change the tone, or just make them sound better. Think of it less as a proofreader and more as a creative partner for brainstorming.

Its magic comes from the advanced language models at AI21 Labs, which help it understand context and nuance on a deeper level. Wordtune's best feature is its ability to offer several different ways to phrase any sentence. This puts you in control, letting you pick the version that best matches what you're trying to say. It’s known for its creative flexibility, especially with its free-form tone prompts that can generate more natural, conversational rewrites.

A deep dive into the Grammarly vs Wordtune comparison

So, how do these two actually compare? To figure that out, we're going to look at their performance based on a few key areas: the quality and accuracy of their rewrites, how they handle tone and brand voice, how they perform across different types of writing, and finally, their integrations and user experience. Let's get into it and see which tool is the right fit for you.

Rewrite quality and meaning preservation

A good rewrite should not change your original message. Let's see how each tool manages to preserve your meaning in complex sentences.

A recent benchmark test found that Wordtune maintained the writer's original intent with 95% accuracy, while Grammarly achieved 92%. For instance, when rewriting "While the algorithm improved precision, it also inadvertently increased latency in multi-node environments," Wordtune’s suggestion ("...though this led to delays...") maintained the cause-and-effect link more naturally than Grammarly’s version.

When it comes to readability, Wordtune's suggestions scored an average of 68.7 on the Flesch Reading Ease scale, making them a bit simpler for a general audience. Grammarly came in at 64.2, which is still perfectly fine for most readers and often helps maintain a more formal tone in business documents.

Factual drift is a big deal, especially for technical or data-heavy content. You don't want the AI accidentally introducing errors. Wordtune's more creative approach can sometimes lead to "factual drift" (like changing "constrained training conditions" to "limited data"). Grammarly's approach is more conservative, maintaining a 98% factual alignment compared to Wordtune's 93%. This makes Grammarly a dependable option when precision is your top priority, as you can see in the direct performance comparison below:

Here's a quick look at how they compare:

Tone control and brand consistency

The two tools take completely different approaches when it comes to managing your writing's tone.

Grammarly gives you seven structured presets to pick from, like Formal, Confident, and Empathetic. You can combine these with goals like "Business" or "Creative" to fine-tune things. Wordtune, however, has a very intuitive, open-ended prompt system. You can just type "make this sound assertive but kind" and see what it generates. It also has a Custom Tone Library where you can train a personal tone profile using your own writing.

For teams, keeping everyone on-brand is essential. Grammarly Business offers a brand tone manager that uses rules, like a list of banned terms or preferred phrases, to keep things consistent. Wordtune Workspace has a feature called VoiceLock™, which learns your brand voice from existing documents. This gives it a more adaptive and nuanced feel. In fact, G2 reviews report that VoiceLock improved tone consistency for teams by 37%.

Wordtune is also particularly effective at adjusting the tone within a single piece of writing. It can detect discourse markers to create a more dynamic emotional flow, which is great for storytelling. Grammarly tends to keep a more uniform tone throughout, which is better for straightforward consistency but not as effective for more engaging, motivational content.

Use-case performance: Email, academic, and marketing

How do these tools hold up in the real world? It really depends on what you're writing.

When you're firing off emails, speed is key. With an average latency of just 1.2 seconds compared to Wordtune's 1.9, Grammarly is ideal for quick, professional edits right inside Gmail and Outlook.

For academic and technical writing, Grammarly's strengths in maintaining structure and precision are a huge advantage. It helps you stay coherent without over-simplifying important terms. Wordtune's paraphrasing can sometimes get a little too close to the original for academic work if you're not careful, though its "Academic Mode" does a decent job of flagging potential issues.

For marketing copy, Wordtune offers some distinct advantages. It is effective at writing copy that's persuasive and connects with people emotionally. In simulated tests, product taglines rewritten by Wordtune got an 11% higher click-through rate, which shows its talent for crafting compelling messages.

I end up switching between both all the time depending on what I’m writing (or what client is asking for). For academic stuff or anything with stats, legal, compliance, Grammarly just feels safer - Wordtune has surprised me before by soft-changing the meaning, like it tries too hard to make the sentence 'flow.' But for marketing copy or even product descriptions, Wordtune just sounds less stiff, and its customization for tone is way more flexible.

Reddit

Integrations and user experience

A great tool is one that fits right into how you already work.

Grammarly has been around longer and has more polished integrations, especially its seamless functionality within Google Docs and Microsoft Word. Wordtune is also expanding into collaborative tools like ClickUp, Jira, and Confluence with its Wordtune Everywhere beta, giving it a potential edge for teams working on documentation together.

Grammarly's one-click rewrites are faster for quick edits and proofreading. Wordtune's more detailed, clause-by-clause editing gives you more precision. It might take a bit longer for the initial edit, but it can actually reduce your final revision time by 22% because the contextual flow is better from the start.

On the desktop, Grammarly offers an Offline Draft Mode, letting you work even without an internet connection. Wordtune provides features like voice-to-rewrite on mobile, which is great for creators who are always on the go.

Pricing comparison

Let's talk about cost. Both tools have free versions, but their paid plans are where the real power is.

• Grammarly:
  • Free: Gives you the basics, like grammar and spelling checks.
  • Premium: Costs about $12 per month when billed annually. This adds tone suggestions, advanced clarity rewrites, and a plagiarism checker.
  • Business: You'll need to get custom pricing for your team, but it includes style guides, analytics, and the brand tone manager.
• Wordtune:
  • Free: Lets you do a limited number of rewrites each day.
  • Plus: Is $9.99 per month when billed annually and gives you unlimited rewrites and advanced tone control.
  • Workspace: This is the team plan with custom pricing. It includes collaborative features and the VoiceLock™ technology.

For a visual breakdown of how these tools compare in real-time, here’s a helpful video review that walks through the key features and user experience of both Grammarly and Wordtune.

A video review comparing the features, user interface, and overall performance of Grammarly and Wordtune side-by-side.

An alternative for content generation: eesel AI blog writer

While Grammarly and Wordtune are fantastic for refining your writing, the eesel AI blog writer is built to help you scale your entire content strategy from the ground up. It's designed for a completely different task: generating complete, publish-ready articles, not just tweaking sentences.

Here's what makes the eesel AI blog writer different:

• From keyword to complete post: You give it a single topic or keyword, and it generates a fully structured, SEO-optimized blog post with an intro, headings, a conclusion, and even an FAQ section.
• Context-aware research: It avoids that generic AI filler by pulling in relevant data and insights that are specific to the type of blog you're creating.
• Automatic assets: It doesn't just give you words. It enriches the content with AI-generated images and tables, and even embeds relevant Reddit quotes and YouTube videos to make your posts more engaging.

At eesel AI, we used this exact tool to grow our daily impressions from 700 to 750,000 in just three months by publishing over 1,000 optimized blogs. It's a huge boost for anyone serious about content marketing.

Grammarly vs Wordtune: Which tool is right for you?

Deciding between Grammarly and Wordtune depends on your specific writing needs.

• Choose Grammarly if: You need a super reliable tool for technical correctness, structural integrity, and a professional polish. It's the best option for business, academic, and data-heavy content where factual accuracy is non-negotiable.
• Choose Wordtune if: You're looking for a creative partner to help you explore different phrasings, inject more personality into your writing, and maintain a consistent brand voice. It's the top choice for marketing, communications, and content creation.
• Choose the eesel AI blog writer if: Your goal is to scale up your content production. If you want to move beyond editing sentences and start generating complete, SEO-optimized blog posts that drive real traffic, it's the tool for you.

Final thoughts

The choice between Grammarly and Wordtune depends on whether you prioritize structural precision or creative expression. Both tools offer powerful features for their respective strengths.

For individuals and teams who want to move beyond editing and into full-scale content production, a dedicated AI content generation platform can be a helpful next step.

Generate your first blog for free with the eesel AI blog writer.