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Still the best dedicated AI writing companion, but the Superhuman expansion raises pricing and privacy questions
- Real-time writing assistance across Chrome, Edge, Firefox, Safari, Word, Outlook, Google Docs, Slack, and mobile
- Comprehensive grammar, spelling, and punctuation correction with best-in-class contextual accuracy
- Free tier now includes tone detection, 100 AI prompts/month, and conciseness feedback
- Pro adds full-sentence rewrites, brand tones, plagiarism checker, citation generator, and 2,000 AI prompts/month
- Enterprise-grade security with SOC 2 Type 2, ISO 27001/27017/27701, HIPAA, AES-256 encryption
- New AI agents (Proofreader, Paraphraser, Reader Reactions, AI Grader, Citation Finder, Fact Checker) add depth
- Superhuman Go AI assistant offers proactive, context-aware support in Chrome and Edge at no cost during early access
- Weekly insights and customizable goals for audience, formality, domain, and intent
- Pro plan at $12/month (annual) or $30/month (monthly) is pricey compared to QuillBot ($8.33/month) and free ChatGPT alternatives
- Expert Review feature launched in 2026 impersonated writers without consent, prompting class action lawsuit and forced shutdown
- AI-generated rewrites and suggestions can feel generic and require substantial editing for professional use
- Free tier AI prompt cap of 100/month runs out quickly for power users
- Text is processed on Grammarly servers - dealbreaker for some enterprise security policies despite SOC 2/ISO certs
- Mobile keyboard can drain battery and feels slower than native keyboards
- Real-time underlines can interrupt creative flow if you fixate on every suggestion
- Company priorities now split across Superhuman Suite (Coda, Mail, Go) raise questions about long-term Grammarly product focus
Grammarly Review 2026: The AI Writing Powerhouse (Now Part of Superhuman)
Hands-On Verdict
I have used Grammarly for over five years - through rebrands, acquisitions, AI feature avalanches, and one very public class action lawsuit. The short version: Grammarly is still the most polished real-time writing assistant on the market. But in 2026, the conversation around it is messier than ever.
The honest question is not whether it catches typos (it does, flawlessly). It is whether the company behind it - now called Superhuman, after the October 2025 rebrand that unified Grammarly, Coda, Superhuman Mail, and Superhuman Go - is still focused on making your writing better, or chasing a broader “AI productivity platform” vision that dilutes what made Grammarly essential.
As of my May 2026 verification pass, this review covers practical reality: what you get at each tier, where Grammarly still wins decisively, where it stumbles badly (Expert Review), and who should - and should not - pay for Pro. My rule of thumb: use Grammarly when it removes friction from a real workflow. Test it with your own writing, brand voice, privacy requirements, and failure cases before committing.
The 2025 – 2026 Transformation: From Grammar Checker to Superhuman
If you last evaluated Grammarly in 2024, you are looking at a fundamentally different company. Here is the timeline:
December 2024: Grammarly acquires Coda, signaling its ambition to move beyond writing into full productivity suites.
March 2025: “Grammarly Premium” rebrands to “Grammarly Pro.” Pricing stays at $12/month (annual), but Pro bumps generative AI prompts from 1,000 to 2,000 per month and adds team functionality for up to 149 seats, brand tones, style guides, snippets, and analytics. Premium survives only via App Store/Google Play with 1,000 prompts.
May 29, 2025: Grammarly secures $1 billion in non-dilutive financing from General Catalyst. It now serves 40M+ daily users, generates $700M+ in annualized revenue, and is used by 50,000 organizations (96% of the Fortune 500). Valuation holds at $13 billion from the 2021 Series C.
June/July 2025: Grammarly acquires Superhuman Mail. Combined with Coda, the productivity suite takes shape.
October 29, 2025: The company rebrands to “Superhuman,” launching the Superhuman Suite (Grammarly + Coda + Superhuman Mail) and Superhuman Go, a proactive AI assistant. The Grammarly product name remains, now one app inside a larger platform. Go is free during early access via Chrome and Edge.
February 23, 2026: Superhuman Go expands with partner agents.
March 2026: The Expert Review firestorm. Grammarly launched an AI feature that analyzed writing and delivered feedback impersonating real authors and journalists - without consent. A class action lawsuit followed within days (WIRED, March 11; BBC, March 12). The New York Times published “Why I’m Suing Grammarly” (March 13). Grammarly disabled Expert Review by March 12 and announced it would “reimagine” the feature.
The core writing engine is unchanged and still excellent, but the company’s product judgment and ethical guardrails are now legitimate questions.
What You Actually Get: Free vs. Pro vs. Enterprise
Free Plan - $0
- Spelling, grammar, and punctuation correction
- Tone detection (formality, confidence, friendliness)
- Conciseness suggestions
- 100 generative AI prompts per month (~3–4/day)
- Weekly writing insights, basic AI agent access
This is meaningfully better than two years ago. Tone detection used to be Pro-only. For casual personal use, the free tier is genuinely functional.
Grammarly Pro - $12/member/month (annual, $144/yr) or $30/month or $60/quarter
- Everything in Free plus 2,000 AI prompts/month, full-sentence/paragraph rewrites
- Plagiarism checker, citation generator (APA, MLA, Chicago), brand tones, style guides
- Team functionality (up to 149 seats) with admin controls, analytics, snippets
- Full AI agent access: Proofreader, Paraphraser, AI Grader, Citation Finder, Reader Reactions, Fact Checker, Humanizer, AI Detector
$12/month annual is competitive stacked against standalone plagiarism, citation, and grammar tools. The $30/month monthly rate is steep - Grammarly pushes annual commitment. Student discounts via UNiDAYS/Student Beans knock 20–25% off, bringing annual Pro to ~$9–$9.60/month.
Enterprise - Custom pricing (estimated $15–$25/user/month)
- Everything in Pro plus SAML SSO, SCIM, admin dashboard
- SOC 2 Type 2, ISO 27001/27017/27701, HIPAA, AES-256 encryption
- Dedicated account management, AI training off by default for Business/Education users
The AI Agents: Beyond Grammar Checking
The biggest functional change in 2026 is the AI agent ecosystem - a suite of task-specific agents accessible from Grammarly’s web editor and, increasingly, via the browser extension through Superhuman Go:
- Proofreader: Real-time grammar, clarity, and structure refinement. The classic Grammarly experience, now branded as an “agent.”
- Paraphraser: Rephrases text for a specific audience, tone, or style. My most-used agent for adapting formal content into casual communication.
- Reader Reactions: Predicts how a specific audience will respond to your writing. Genuinely innovative - it goes beyond tone detection into empathy simulation. Has saved me from sending emails that would have landed poorly.
- AI Grader: Estimates grades based on rubrics and course context, guiding revisions before submission.
- Citation Finder: Finds legitimate sources, fact-checks claims, and auto-generates citations.
- Fact Checker: Validates claims against external evidence. New in 2026 and promising, but produces occasional false positives requiring manual verification.
- AI Detector and AI Humanizer: Check for AI-generated content and make AI-assisted text sound more natural.
- Plagiarism Checker: Scans billions of pages, flagging close paraphrasing beyond verbatim copying.
The agent ecosystem is strongest inside Grammarly’s web editor (app.grammarly.com). Outside that sandbox, you get the classic underlines-and-sidebar experience plus whatever Superhuman Go surfaces proactively.
Superhuman Go: The Proactive AI Assistant
Superhuman Go is the wildcard in Grammarly’s 2026 offering. It is an AI assistant that floats across your browser, understanding the context of whatever you are working on - an email draft, a Google Doc, a Slack thread - and proactively offers help. It can suggest tone adjustments, surface relevant information from connected apps, schedule meetings, remind you about follow-ups, and even file bugs from email threads.
During early access (ongoing as of May 2026), Go is free for all Grammarly users on Chrome and Edge. The company has not announced post-early-access pricing.
Go is impressive in demos. In my daily workflow, the proactive suggestions sometimes feel magical and sometimes feel intrusive, depending on how focused I am. The meeting scheduling and context recall features are genuinely useful if you live in your browser. But Go is not a replacement for Grammarly’s core writing engine - it is an additional layer that some users will love and others will toggle off.
Integrations: Where Grammarly Actually Works
Grammarly claims support for 1M+ apps and websites. In practice:
Tier 1 - Seamless: Gmail, Google Docs, Microsoft Word/Outlook (desktop add-in), Slack, LinkedIn, X/Twitter, Grammarly’s web editor (app.grammarly.com), Figma, Notion.
Tier 2 - Quirks: Google Docs on Safari lags on long documents. Some enterprise apps block the extension. The Office add-in occasionally conflicts with other plugins.
Tier 3 - Mobile: iOS and Android keyboard replacement works across all apps but adds latency and battery drain on older devices. Premium (App Store/Google Play) gets 1,000 AI prompts vs. Pro’s 2,000.
Desktop apps for Windows and Mac provide system-wide checking beyond the browser’s reach. The Mac app runs smoothly; Windows has occasional hiccups on low-spec machines.
Grammarly vs. The Competition in 2026
The competitive landscape has shifted dramatically:
Microsoft Copilot / Microsoft Editor: Bundled with Microsoft 365, Editor covers grammar and spelling; Copilot adds generative AI inside Office. Grammarly wins on depth - tone detection, clarity scoring, and genre-specific suggestions are more nuanced. But Copilot is effectively free for M365 subscribers, and its deep Word/Outlook/Teams integration is compelling for Microsoft-only shops. For teams straddling Google Workspace and Microsoft 365, Grammarly’s cross-platform consistency wins.
ProWritingAid ($79–$120/year): Offers 25+ in-depth writing reports and native Scrivener integration. Better for novelists and long-form authors. Grammarly wins on simplicity, cross-platform polish, and the browser extension. Most non-fiction professionals will prefer Grammarly; fiction writers should consider ProWritingAid.
ChatGPT (and Claude, Gemini): Can edit, rewrite, and generate from scratch but cannot sit passively in your browser underlining errors in real time. The two tools are complementary: ChatGPT for drafting and brainstorming, Grammarly for the invisible safety net. The risk: ChatGPT’s free tier keeps improving, and for many, a quick “fix grammar” prompt is becoming good enough.
QuillBot ($8.33/month annual): Undercuts Grammarly on price with paraphrasing, grammar, and plagiarism. Lacks Grammarly’s tone detection depth, AI agent ecosystem, and enterprise features. Budget-friendly for students; professionals will find Grammarly Pro’s polish worth the extra ~$3.67/month.
Where Grammarly Falls Short in 2026
The Expert Review debacle cannot be ignored. That a company with $700M in revenue and 40M users launched AI personas of real writers without consent reflects a product culture prioritizing shipping over ethics. As of May 2026, the feature is disabled and litigation is pending. For enterprise buyers, this raises uncomfortable vendor-review questions.
Suggestion overload is real. As Grammarly adds agents and features, the interface gets noisier - underlines, sidebar cards, Go popups, agent suggestions. I recommend writing in focus mode first, reviewing afterward, which undermines the real-time value proposition.
AI generation quality is inconsistent. Paraphrasing is solid. Generative writing (new paragraphs from prompts) produces competent but bland output. For creative, voice-driven content, you will write it yourself or use a specialized tool.
The Superhuman rebrand creates product uncertainty. Grammarly is now one product inside a company that also owns Coda, Superhuman Mail, and Superhuman Go. Will the writing assistant receive focused development or become a platform feature? The company insists Grammarly remains core, but rebranding the entire org to “Superhuman” sends mixed signals.
Privacy concerns persist for regulated industries. Despite SOC 2 Type 2, ISO 27001/27017/27701, HIPAA compliance, and AES-256 encryption, Grammarly processes text on its servers. Some financial institutions, law firms, and government agencies still block the extension. Enterprise plans address this with contractual safeguards, admin controls, and AI training opt-outs, but zero-trust environments may require local-only alternatives.
Who Should Use Grammarly in 2026
Pay for Pro if:
- You write professionally every day across multiple platforms (email, docs, social, Slack)
- Tone and clarity are critical to your work (client-facing roles, leadership, marketing)
- You need integrated plagiarism checking and citation generation
- You manage a team and need consistent brand voice, style guides, and analytics
- You are a non-native English speaker seeking contextual feedback beyond what free tools offer
Stick with free if:
- You write casually and need basic grammar and spell-checking
- Microsoft 365 Copilot/Editor already covers your needs
- 100 AI prompts/month is sufficient for your occasional use
Skip Grammarly if:
- Your organization blocks cloud-based text processing for compliance reasons
- You write long-form fiction or academic manuscripts (ProWritingAid fits better)
- You are comfortable prompting ChatGPT/Claude for improvements and do not need real-time inline checking
- The Expert Review controversy makes you unwilling to trust the company
My Bottom Line
Five years in, Grammarly’s core product remains unmatched at catching errors you would miss, refining tone you did not realize was off, and doing it without making you switch tools. The grammar engine, tone detection, and clarity suggestions are as good as ever.
The question is whether the company can sustain that focus. The Superhuman rebrand, Coda and Mail acquisitions, and Expert Review disaster suggest a company racing to build an “everything platform.” When that racing produces genuine innovation (Reader Reactions, proactive Go suggestions), it is exciting. When it produces AI personas of real writers without consent and a class action lawsuit, it erodes the trust that made Grammarly a $13 billion company.
I still recommend Grammarly Pro for professional writers. The 2026 feature set - 2,000 AI prompts, the full agent suite, cross-platform real-time checking, enterprise security, and brand voice controls - delivers value free alternatives cannot yet match. But I recommend it with a caveat I did not need a year ago: pay attention to where this company is going, and do not assume the Grammarly you rely on today will look the same twelve months from now.
Start with the free tier. Use the 100 AI prompts. Test the agents. If Grammarly earns its place in your daily workflow, Pro at $12/month (annual) is money well spent. If you find yourself reaching for ChatGPT more often, you have your answer.