Tools · Issue #20 ·
Grammarly, the writing checker that now has AI agents to tell you how your draft will land before you hit send
In one line: Grammarly still fixes your spelling and grammar in almost every app you type in, but it now also has a free writing space called Docs with AI agents that predict how a reader will react, score an assignment against your rubric and find sources for your claims, and the free plan covers the basics plus a small daily taste of the agents.
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What it is
Grammarly (now part of Superhuman, the company that also makes Superhuman Mail and Coda) is the writing assistant most people know for the red underlines. That part still works across more than a million apps and websites through its browser extension (Chrome, Safari, Firefox, Edge), desktop apps for Windows and Mac, apps for iPhone, iPad and Android, and add-ins for Google Docs and Microsoft Office. It catches spelling, grammar and punctuation mistakes and shows you the tone of what you wrote. What's new is Docs, a browser-based writing space where a panel of task-specific AI agents sits next to your draft. Reader Reactions lets you pick an audience (your manager, a client, or one you describe) and predicts what they'll take away, what they'll be confused by and what they'll ask, then suggests fixes. AI Grader takes your rubric or assignment details and gives you feedback plus an estimated grade. Citation Finder flags claims that need a source, suggests credible ones and inserts the citation in APA, MLA or Chicago style without rewriting your text. There's also a Proofreader agent, a paraphraser, an AI detector, a plagiarism checker and a "humanizer" that makes AI-assisted text sound more natural. If you switch on Superhuman Go in the extension or desktop app, you can use agents and an AI chat on other websites too. You can opt out of Grammarly using your writing to train its models.
Who it's for
Anyone who writes things other people read and judge: emails to clients, reports, cover letters, school papers. Students get the most out of the free agents (AI Grader and Citation Finder are built for assignments), and people writing in English as a second language get a lot from the everyday checks. It's less useful if you mostly write in a language other than English inside Docs (Docs supports English only for now, although Grammarly's regular suggestions cover more than 20 languages), if you need to co-write in real time (Docs has no collaboration yet), or if your employer blocks browser extensions that read what you type, which is how Grammarly works outside Docs.
Try this today
Go to grammarly.com, click Create account, and stay on the Free plan. Install the browser extension so the basic checks follow you into Gmail, LinkedIn and wherever else you write. Then open Docs and click New doc (pick that over "Use classic docs"). Paste in something you're about to send that matters, like a pitch email or a status update to your boss. Click the Reader Reactions icon on the right, pick the audience that matches who'll actually read it, and read what it thinks they'll remember and what they'll ask. Fix the one question you didn't see coming, then send it. If you're a student, try AI Grader on your next assignment with the real rubric pasted in, and treat the grade as a guess, not a promise. Docs runs on desktop browsers only, so do this on a laptop.
The catch
The free plan is a taste, not the full meal. You get 100 AI prompts a month, up to five Reader Reactions a day, one AI Grader scan a day and up to five citations a day from Citation Finder. Full-sentence rewrites, tone adjustment, fluency suggestions, the plagiarism checker and AI-text detection are Pro only. The Pro trial is seven days when it's offered, and you'll be charged when it ends unless you cancel; Grammarly says it emails a reminder two days before, and canceling ends the trial right away and drops you back to Free without losing your documents. The headline $12 price is the yearly plan paid up front; paying month to month is $30, more than double. The extension reads what you type in other apps to do its job, so check your company's rules before installing it on a work machine. And the predictions are guesses: Reader Reactions doesn't know your actual manager, and AI Grader isn't your teacher.
Pricing
Free: $0, with spelling and grammar fixes, tone detection, 100 AI prompts a month and limited daily use of the Docs agents. Pro: $144 per member per year (about $12 a month), $60 per member every three months, or $30 per member month to month, with full-sentence rewrites, tone adjustment, fluency help, plagiarism and AI-text detection, 2,000 AI prompts per member a month, unlimited agent use, and team features like a style guide, brand tones and snippets. Pro works for 1 to 149 seats, so you can buy one for yourself, and there's no separate family plan; you add family members as extra seats at the same rates. Enterprise: contact sales, sold through Superhuman Go, with unlimited prompts, SSO, SCIM, data loss prevention and dedicated support. Prices are in USD; regional pricing in euros, pounds and rupees shows at checkout. Grammarly doesn't offer lifetime or one-time plans, and subscriptions renew automatically.
Pricing checked on Grammarly's plans page, the Pro, Docs and AI agents pages (Reader Reactions, Citation Finder), and the Grammarly help center (How much does Grammarly Pro cost?, About Grammarly Pro, Family plans, Free trial, Cancel your free trial, Reader Reactions, AI Grader, Citation Finder and Superhuman Go agents guides, and the generative AI prompts article) on Nov 3, 2026.