Grammarly Review: What It's Good For, Pricing, Alternatives (2026)

Grammarly started as a spell-checker that followed you around the web, and that is still its strength: it works inside Gmail, Google Docs, Word, Outlook, Slack, LinkedIn, and almost any text box through a browser extension, desktop app, and mobile keyboard. It flags grammar, punctuation, clarity, and tone as you type, and suggests tighter phrasing without you leaving the page.

The AI layer has grown on top of that. You can ask it to draft an email from a few bullet points, rewrite a paragraph to be more direct or more diplomatic, adjust length, or suggest replies. Paid plans add a plagiarism checker, an AI detector, and specialized review agents that critique a document for clarity, structure, and likely reader reaction. The company behind it renamed itself Superhuman in late 2025 after buying the Superhuman email app, though the Grammarly product keeps its name.

Its weakness is judgment. Grammarly will flag deliberate style choices, push everything toward the same smooth corporate register, and occasionally suggest a change that alters meaning. Its AI detector, like all of them, produces false positives and should never be used to accuse anyone. Treat it as a diligent proofreader, not an editor.

Best for

Anyone who writes a lot of email and wants a safety net for typos and tone
Non-native English writers who want clear, consistent business prose
Teams that need a shared style guide enforced across everyone's writing
Quick rewrites: shorter, friendlier, more formal, more confident
Schools and educators on Education plans, for staff writing and teaching clarity

Not ideal for

Long-form drafting from scratch; a chat assistant does that better
Writers with a deliberate voice who will fight every suggestion
Deciding whether a person used AI; its detector is not evidence

Key features

Real-time corrections everywhere you typeThe extension and apps check grammar, spelling, punctuation, and clarity inside your email client, documents, chat tools, and CRM. Suggestions appear inline, and you accept or dismiss each one.

Tone detection and rewritesGrammarly reads how a message will land (confident, tentative, blunt) and offers rewrites: shorten, soften, make it more direct, or adjust for the audience. Useful before sending a tense email.

AI drafting and repliesGive it a few bullet points and a purpose and it drafts the email or document; it can also suggest replies based on the thread. Edit the result; the drafts are competent and generic.

Style guides for teamsPro and Enterprise plans let an admin set company terms, banned words, and preferred tone so every writer gets the same nudges. This is the feature that makes it worth buying for a team.

Plagiarism checker, AI detection, and review agentsPaid plans compare text against web sources for unoriginal passages, estimate how much of a document reads as AI-written, and run specialist reviews such as expert critique and reader-reaction predictions. Treat the AI-detection score as a hint, never a verdict.

Pricing

A free plan with basic grammar, spelling, and tone checks and a limited number of AI prompts each month; a Pro plan for individuals and small teams with full rewrites, style guides, and plagiarism and AI detection; Enterprise with admin controls, single sign-on, and analytics; discounted Education plans for schools.

The plan names changed in 2024 when Premium and Business were merged into Pro, so older reviews quote tiers that no longer exist; confirm current pricing on grammarly.com.

Pricing changes often. Confirm current plans on the vendor's site before you buy.

Pros and cons

Pros

Works inside the tools you already use rather than in a separate window
Catches the small errors that make professional writing look careless
Tone feedback is a real help before a sensitive message goes out
Team style guides keep external writing consistent without a review step

Cons

Flattens distinctive writing toward one polished, corporate voice
Some suggestions change meaning; you cannot accept them on autopilot
The extension reads what you type, which some IT teams block outright
AI detection produces false positives and invites unfair accusations if misused

How people use Grammarly at work

Customer service reps: reply faster without sounding robotic

Draft the reply from three bullet points, then run the tone check to make sure a refund refusal reads as firm but respectful. Keep account numbers and personal details out of prompts unless your company has approved the tool for that.

Recruiters: consistent, inclusive outreach at volume

Set up a team style guide with preferred terms and banned phrases so every recruiter's messages get the same nudges. Rewrite job descriptions for clarity and reading level, and review its suggestions for anything that changes a requirement.

Teachers: your own writing, and a lesson on clarity

Use it for parent emails, newsletters, and grant applications, and to show students what a clarity suggestion looks like. Do not use the AI detector to accuse students; it misfires, and school policy should govern any decision about AI use.

Content writers: the last pass before publishing

Run the final draft through it for typos and repeated words, accept what fixes an error, and reject what changes voice. Then use the plagiarism check to make sure a quoted phrase is attributed.

Getting started

Install the browser extension and the desktop app, and check with IT first if you work in a regulated field; some organizations block extensions that read text fields.
Write one real email with it on and dismiss suggestions that change meaning; notice which categories you always reject and turn those off in settings.
Try the tone detector on a message you are nervous about sending, and ask for a softer or more direct rewrite.
If you lead a team, set up a style guide with your product names, banned phrases, and preferred tone before rolling it out.

Alternatives to Grammarly

ChatGPT

The general-purpose AI assistant most of your coworkers already use.

Claude

A careful writing and analysis assistant that shines on long documents.

Notion AI

AI built into the workspace where your notes, docs, and projects already live.

Microsoft Copilot

AI inside Word, Excel, Outlook, and Teams, with your company's data protections.

Frequently asked questions

Is Grammarly free?

Yes. The free plan covers grammar, spelling, punctuation, and basic tone with a monthly allowance of AI prompts. Pro adds full rewrites, style guides, plagiarism and AI detection, and more prompts; Enterprise adds admin controls. Check grammarly.com for current limits.

Does Grammarly read everything I type?

The extension needs to see text to check it, and it stays out of fields marked as sensitive such as passwords and payment forms. Grammarly says it does not sell your data and that enterprise content is excluded from training. If you handle client, patient, or legal information, confirm with your IT team before enabling it, and never rely on a consumer extension for confidential work without approval.

Is Grammarly's AI detector accurate?

No detector is reliable enough to act on alone. Expect false positives on plain, well-structured human writing and misses on lightly edited AI text. Use it as a prompt to ask questions, never as proof, and follow your organization's policy.

Grammarly or ChatGPT for writing?

Different jobs. Grammarly polishes what you have written, where you write it. ChatGPT or Claude drafts and restructures from scratch in a separate window. Many people use a chat assistant for the first draft and Grammarly for the last pass.

Independent review. Pricing is described in words because plans change often; check the vendor's site.

Grammarly review