Grammarly AI Review 2026: 9 Powerful Features Beyond Grammar and a Few Honest Flaws

This Grammarly AI review starts with a question many long-time users are asking: is Grammarly still just a grammar checker? For years, that’s exactly what it was. You installed the browser extension, and little red and blue underlines caught your typos, missing commas and awkward sentences. It was reliable, useful and a little boring.

In 2026, Grammarly looks very different. It now offers full-sentence AI rewrites, tone adjustments, a set of AI agents that can grade essays, predict reader reactions and find citations, and a proactive assistant called Superhuman Go that suggests actions across your apps without being asked. The company behind it has changed too. In late 2025, Grammarly’s parent company renamed itself Superhuman after buying the email app of the same name and the document tool Coda.

That’s a lot of change, and not all of it has gone smoothly. In March 2026, Grammarly shut down a feature called Expert Review after writers discovered it was presenting AI-generated advice under their names without permission, and the company now faces a class action over it.

So where does that leave everyday users? In this review, we’ll break down what Grammarly’s AI can actually do, what each plan costs, how the new agents and Superhuman Go work, where the tool still shines, where it falls short, and how it compares with alternatives. By the end, you’ll know whether Grammarly Pro is worth paying for, or whether the free plan or another tool fits you better.

What Is Grammarly in 2026?

Grammarly started as a grammar checker and grew into a full AI writing assistant. It works across a huge range of apps and websites, including Chrome, Edge, Firefox, Safari, Microsoft Word, Outlook, Google Docs, Slack and mobile devices.

The Superhuman Rebrand Explained

The name changes can be confusing, so here’s the short version:

• July 2025: Grammarly acquired the email client Superhuman, after already agreeing to acquire Coda.
• October 29, 2025: The parent company renamed itself from Grammarly Inc. to Superhuman Platform Inc., bringing Grammarly, Coda, Superhuman Mail and the new Superhuman Go assistant under one brand.

The key point for users: the company rebranded, not the writing product. It’s still called Grammarly, and for most individuals, the pricing structure stayed the same.

How Big Is Grammarly?

Grammarly remains one of the most widely used writing tools. One review cites more than 40 million daily users, over $700 million in annual recurring revenue and more than 50,000 organizations. Those figures come from a third-party review, so treat them as approximate.

Grammarly Pricing in 2026

Pricing is simpler than it used to be, but there are still a few traps to watch for.

The Three Main Plans

Grammarly Pro costs $12 per member per month when billed annually, or $30 per month if you pay monthly. That’s a big difference, so the annual plan is usually the better deal if you’re committed.

What the Free Plan Includes

The free plan is more useful than many people expect. It now includes tone detection, 100 generative AI prompts a month and conciseness feedback, alongside basic grammar, spelling and punctuation checks.

What Pro Adds

Pro adds full-sentence rewrites, tone adjustment, unlimited personalized suggestions, plagiarism and AI-text detection, and 2,000 AI prompts per member per month. It also includes light team features like up to two user groups, one style guide, one brand tone, snippets and team analytics.

The Superhuman Suite Business Plan

There’s also a bundled option. The Business plan in the Superhuman suite costs $33 per member per month annually, or $40 monthly. It bundles Grammarly Pro features with Superhuman Mail, the AI email client that normally costs $30 a month on its own. Most freelancers and bloggers only need Pro.

Regional Pricing

Some countries see a plan called “Plus.” It’s a region-specific plan with the same features as Pro, so if you see it at checkout, it’s essentially the same product.

An Interesting Pricing Detail

Unlike many AI writing tools that charge by credits or tokens, Grammarly keeps a flat per-seat price. The only AI-specific limit is the monthly prompt count: 100 on Free, 2,000 on Pro and unlimited on Enterprise. For heavy users, that predictability is a plus.

9 Grammarly AI Features That Go Beyond Grammar

Here’s the heart of this Grammarly AI review: what the tool can do beyond catching typos.

1. Real-Time Grammar and Clarity Checks

Let’s start with the basics, because they’re still Grammarly’s biggest strength. The core engine catches typos plus subtler errors like comma splices, subject-verb agreement problems, awkward phrasing and unclear pronoun references.

What makes it valuable is that it works where you already write. You don’t need to paste text into a separate app. The suggestions appear as you type in your browser, email or documents.

Why it matters: For quick emails, Slack messages and professional documents, it acts as a constant safety net.

2. Full-Sentence AI Rewrites

Pro users can rewrite entire sentences, not just fix individual words. This helps with:

• Wordy or confusing sentences.
• Passive voice that weakens your message.
• Sentences that don’t flow well.
• Paragraphs that need to be shorter.

Why it matters: It speeds up editing, especially when you know a sentence is off but can’t figure out how to fix it.

3. Tone Detection and Adjustment

Grammarly shows how your writing is likely to come across, whether confident, friendly, formal or too blunt. Free users get tone detection, while Pro adds tone adjustment to actually change it.

Why it matters: This is especially helpful for sensitive emails, customer communication and messages to managers or clients.

4. Generative AI Prompts

Grammarly’s built-in AI can draft, rewrite, summarize and brainstorm based on your prompts. You get 100 prompts a month on Free and 2,000 on Pro.

Examples:

• Draft a reply to an email.
• Turn bullet points into a paragraph.
• Summarize a long document.
• Rewrite text for a different audience.

Why it matters: You can generate and edit content in the same place you write, without switching to another AI tool.

5. Grammarly’s AI Agents

In August 2025, Grammarly introduced a set of AI agents as part of an overhaul of its editor. Reviews describe agents including a Proofreader, Paraphraser, Reader Reactions, AI Grader, Citation Finder and Fact Checker.

Here’s what some of them do:

• AI Grader: Predicts how your writing might be graded. Wikipedia notes Grammarly can predict grades based on information about the instructor, course and university.
• Reader Reactions: Suggests how readers might respond to your writing.
• Citation Finder: Helps suggest and insert citations.
• Paraphraser: Rewrites text in different ways.
• Humanizer: Grammarly also offers an option to “humanize” text to avoid it being flagged as AI-generated.

Why it matters: These agents move Grammarly from correcting writing to actively helping plan, review and improve it.

A note of caution: Features like essay generation, grade prediction and humanizing AI text raise obvious questions in academic settings. Students should check their school’s AI policies before using them.

6. Superhuman Go: A Proactive AI Assistant

Superhuman Go is the most significant new direction. Unlike earlier AI tools where you had to type a prompt, it watches what you’re doing and suggests actions on its own.

Examples of what it can do:

• In Gmail, suggest quick reply drafts based on the email.
• In Google Docs, offer to expand bullet points into paragraphs.
• On LinkedIn, suggest comment replies or post improvements.
• In freelance platforms like Upwork, draft professional messages.

Superhuman Go was offered at no extra charge through February 1, 2026, for Chrome and Edge extension users, and Enterprise plans are now delivered through Superhuman Go.

Why it matters: It points to where Grammarly is heading, from a writing checker to a broader AI assistant across your work.

7. Plagiarism Checker

Pro includes a plagiarism checker that compares your writing against billions of web pages.

Why it matters: It’s useful for students, bloggers, content marketers and anyone who wants to avoid accidental copying or check that paraphrased text is original enough.

8. AI Detection and Authorship

With AI-generated content everywhere, Grammarly has added tools to address it. Pro includes an AI detector, and Grammarly has also introduced an “Authorship” feature designed to help show how a document was written.

Why it matters: Students may use Authorship to show their work is their own, while educators and editors may use AI detection as one signal among many. Keep in mind that no AI detector is perfectly reliable, so results shouldn’t be treated as proof on their own.

9. Brand Tones, Style Guides and Team Features

For teams, consistency matters. Grammarly offers brand voice controls, and Pro includes one style guide, one brand tone, snippets and team analytics.

Why it matters: Companies can keep emails, marketing copy and support replies consistent across many writers.

Security and Privacy

For businesses, security is often as important as features. Grammarly advertises enterprise-grade security, including SOC 2 Type 2, several ISO certifications, HIPAA support and AES-256 encryption.

That said, you should still think carefully about what you type into any AI tool. If you handle confidential client information, legal documents or sensitive health data, check your organization’s policies and Grammarly’s current data-use terms before relying on it.

The Expert Review Controversy

No honest Grammarly AI review in 2026 can skip this. It doesn’t change how grammar checking works, but it’s important context for trusting the company’s AI features.

What Happened

Expert Review was one of the AI agents Grammarly launched in August 2025. It suggested improvements to your writing but framed them as coming from real writing experts, including journalists, novelists and academics. For example, a suggestion might appear to come from Stephen King or Carl Sagan, when it was actually AI-generated.

None of these people had given permission, and some had long since died. The feature even showed a verified-style checkmark next to names, making it look official. You can read a detailed breakdown in Plagiarism Today’s report on the Grammarly Expert Review lawsuit.

How Grammarly Responded

At first, the company launched an opt-out email inbox, but after mounting backlash, it disabled the feature entirely. Technology journalist Julia Angwin filed a class-action lawsuit, and her lawyer said he had heard from 40 to 50 more people who objected to being featured.

Superhuman’s CEO Shishir Mehrotra later apologized. According to Nieman Lab’s coverage of the CEO’s comments, he said Expert Review “was not a good feature,” noting it wasn’t good for experts or users. He also floated the idea of eventually relaunching a consent-based version where experts could train AI agents to represent them.

Why It Matters for Users

The feature is gone, and it doesn’t affect Grammarly’s core grammar checking. But it’s a reminder that AI features can be launched quickly without enough thought about consent. It’s worth watching how the company handles similar decisions in the future.

What Grammarly Does Well

Based on user reviews and independent testing, here are Grammarly’s biggest strengths.

• Works almost everywhere. It follows you across browsers, email, docs and chat apps.
• Strong everyday accuracy. It’s excellent at catching grammar, spelling and punctuation mistakes in real time.
• Easy to use. Suggestions are clear, and you can accept or ignore them with a click.
• Useful free plan. Tone detection and 100 AI prompts make the free tier genuinely helpful.
• Predictable pricing. No confusing credit system.
• Good for non-native speakers. Clear explanations help users learn from their mistakes.
• Team consistency tools. Style guides and brand tones help organizations.

User sentiment is generally positive. One G2 reviewer described the tool as a relief for catching text issues, capturing the “safety net” feeling many users report.

Where Grammarly Falls Short

Here’s the other side of this Grammarly AI review.

1. Monthly Billing Is Expensive

At $30 a month, the monthly Pro plan costs far more than the annual rate. If you only need it occasionally, that can feel steep.

2. Suggestions Can Flatten Your Voice

Grammarly’s rewrites often push toward clear, standard business writing. For creative writers, academics or people with a distinctive style, accepting too many suggestions can make writing sound generic.

3. Not Always Right

Like any tool, Grammarly sometimes flags correct sentences or misunderstands context, especially with technical terms, names and intentional stylistic choices.

4. Concerns About Strategy and Trust

Some critics question the company’s direction. One critic quoted in eesel’s review argued Grammarly is suffering from “value migration” and keeps acquiring companies to create a story of relevance. The Expert Review episode also raised trust concerns.

5. Academic Gray Areas

Features like essay generation, grade prediction and AI humanizing can conflict with academic integrity rules. Students need to be careful.

6. Overlap With General AI Tools

Many users already pay for general AI assistants that can rewrite and draft text. For them, Grammarly’s generative features may feel redundant.

Grammarly vs Alternatives

How does Grammarly compare with other writing tools? Here’s a practical overview.

How to Think About It

If you want real-time corrections everywhere you type, Grammarly remains one of the most polished options. One review calls it still the best dedicated AI writing companion, while noting the Superhuman expansion raises pricing and privacy questions.

If you write in multiple languages, LanguageTool may be better value. If you mainly need drafting help, a general AI assistant might cover you. Many people use Grammarly alongside another AI tool: one for drafting, the other for polishing.

Who Should Use Grammarly?

Grammarly Free Is Great For:

• Students and casual writers who need basic corrections.
• People writing emails and messages who want a safety net.
• Anyone who wants to test Grammarly before paying.

Grammarly Pro Is Worth It For:

Pro makes sense when you write professionally and need plagiarism checking, AI rewrites or more than 100 AI prompts a month. That includes:

• Freelance writers and bloggers.
• Marketers and content creators.
• Non-native English speakers writing professionally.
• Small teams that want consistent style and tone.

Consider Skipping It If You:

• Only write occasionally.
• Already rely on another AI assistant for editing.
• Write mostly creative work and want to protect a distinctive voice.
• Need strong support for many languages.

Tips to Get the Most Out of Grammarly

1. Choose annual billing if you plan to use Pro long term.
2. Set your goals for audience, formality and tone so suggestions fit your purpose.
3. Don’t accept every suggestion. Keep what improves clarity and ignore changes that weaken your voice.
4. Use the plagiarism checker before publishing important content.
5. Create a style guide if you work on a team.
6. Use AI prompts for first drafts, then edit carefully yourself.
7. Follow your school or workplace AI rules, especially with generative and humanizing features.
8. Review Superhuman Go suggestions before accepting them, since proactive AI can misread context.

Grammarly Pros and Cons

Pros

• Excellent real-time grammar, spelling and punctuation checks.
• Works across browsers, email, docs, Slack and mobile.
• Useful free plan with tone detection and 100 AI prompts.
• Full-sentence rewrites and tone adjustment on Pro.
• AI agents for grading, citations, reader reactions and more.
• Plagiarism checking and AI detection.
• Predictable flat pricing with no credit system.
• Strong security certifications for businesses.

Cons

• Monthly Pro billing is expensive at $30.
• Suggestions can make writing sound generic.
• Occasional false flags on correct writing.
• Expert Review controversy raised trust concerns.
• Some AI features create academic integrity risks.
• Overlaps with general AI assistants many people already use.

Frequently Asked Questions About Grammarly AI

Is Grammarly still free in 2026?

Yes. The free plan includes basic grammar, spelling and punctuation checks, tone detection and 100 AI prompts a month.

How much does Grammarly Pro cost?

Grammarly Pro costs $12 per month billed annually ($144 a year) or $30 per month billed monthly.

Is Grammarly now called Superhuman?

The parent company changed its name to Superhuman in October 2025, but the writing product is still called Grammarly.

What is Superhuman Go?

It’s a proactive AI assistant that suggests actions as you work, such as drafting email replies or expanding bullet points, without you needing to type a prompt.

What happened to Grammarly’s Expert Review?

It was disabled in March 2026 after writers objected to AI-generated suggestions appearing under their names without consent. A class-action lawsuit was filed over the feature.

Is Grammarly worth it?

It’s worth it for people who write professionally and want real-time corrections, rewrites and plagiarism checks across many apps. Casual users may be fine with the free plan.

Conclusion

This Grammarly AI review shows that Grammarly in 2026 is much more than a grammar checker, combining its reliable real-time corrections with full-sentence rewrites, tone adjustment, generative AI prompts, a set of AI agents for grading, citations and reader reactions, plagiarism and AI detection, team style guides, and the proactive Superhuman Go assistant, all under the new Superhuman company brand. Pricing remains straightforward, with a genuinely useful free plan offering 100 AI prompts a month and Pro at $12 a month billed annually or $30 month-to-month with 2,000 prompts, though the monthly rate is steep and the bundled $33 Business plan only makes sense if you also want Superhuman Mail. On the downside, suggestions can flatten a distinctive voice, some AI features create academic integrity concerns, and the March 2026 Expert Review controversy, which led to a class-action lawsuit and an apology from the CEO, is a reminder to watch how the company handles consent going forward. If you write professionally across many apps and value a constant safety net, Grammarly Pro on annual billing remains one of the most polished writing tools available, while occasional writers can get real value from the free plan alone.