Grammarly

Grammarly's core value hasn't changed: it watches what you type, inside whatever app you're in, and suggests grammar, spelling, clarity, tone, and style improvements in real time. The browser extension, desktop apps, and mobile keyboards plug into basically every text field — Gmail, Google Docs, Slack, Discord, Twitter, LinkedIn, Microsoft Word, Notion, you name it.

What changed is what happens when you click the Grammarly icon. In 2022, it was a suggestions panel. In 2026, it's a full AI writing assistant — you can ask it to rewrite a paragraph, shorten a message, make something more formal, generate a draft from a prompt, or just explain what it's suggesting. This is GrammarlyGO, and it's now deeply integrated into the main product rather than a separate feature.

The company was acquired by Coda's parent and then spun some of it back out, and the product has settled into a recognizable stable shape: a writing assistant that lives wherever you write, with real-time suggestions and on-demand generation. It's used by tens of millions of people and tens of thousands of organizations.

The core Grammarly experience is the underline. You're typing an email. Grammarly underlines a word. You hover, it tells you what's wrong (passive voice, tone mismatch, missing comma), you click to accept or reject. Multiply by every text field you use all day. This is the thing that Grammarly does better than anything else on the market, because it's been refined for 15+ years.

The categories of suggestions have expanded over time. The free tier covers spelling, grammar, and basic punctuation. Premium adds clarity (wordiness, confusing phrasing), engagement (tone, variety, passive voice), and delivery (tone target, formality target, audience target). Business adds style guide enforcement — if your company defines terms like "customer" instead of "user," Grammarly will flag and suggest corrections.

The tone feature specifically deserves attention. Grammarly detects the tone of your writing in real-time (confident, friendly, tentative, formal, etc.) and lets you set a target tone. If you're drafting an email and it reads more aggressive than you intended, Grammarly flags specific sentences that are tilting the tone and suggests softer alternatives. This is the feature I use most and the one that genuinely makes me write better.

Where the real-time suggestions fall down is in stylized writing. Creative fiction, marketing copy with intentional rule-breaking, and any writing with a strong personal voice will get flagged for things that aren't actually wrong. You can dismiss these, but the noise is real. Grammarly works best for workplace writing where being clear and correct matters more than being distinctive.

When you hover on the Grammarly icon in any compatible app in 2026, you get a prompt box. You can ask it to rewrite, shorten, expand, rephrase for a specific audience, generate a response to an email you received, draft from a one-line prompt, or do any of the dozens of preset actions in the menu.

The generative output is fine. It's not as good as ChatGPT or Claude for anything substantive — a 2-paragraph rewrite is fine, a 10-paragraph draft feels thinner. But it's fast, it's in-app, and it doesn't require copy-pasting out and back. For quick edits and responses, this is the right tradeoff.

The prompt library is genuinely useful. Rather than asking you to write a prompt, Grammarly offers buttons like "Make it more persuasive," "Apologize for a delay," "Write a polite decline," "Turn into bullet points." These are the 80% of prompts most people actually need, and having them pre-built removes the friction of figuring out how to ask.

Generative features are unlimited on Premium and Business. Free users get 100 prompts per month, which is enough to try but not enough to rely on.

Grammarly Business is $15/user/month, up from $12 for Premium. The extra $3 gets you team admin, centralized billing, analytics, and the feature that actually matters — the style guide.

The style guide lets you define rules that Grammarly will enforce across everyone on your team. Examples: "Never use 'utilize' — use 'use' instead." "Refer to our product as 'Acme Pro' not 'AcmePro'." "Avoid the word 'simple' in customer communications." The rules range from terminology enforcement (easy) to brand voice guidelines (harder, more subjective).

For teams that ship a lot of written content — support articles, sales outreach, marketing copy, product documentation — the style guide is the feature that pays for Business. Getting every writer to follow a brand voice manually is a nightmare. Having Grammarly flag violations in real time actually works.

Business also adds analytics. Admins can see how often Grammarly is being used, acceptance rates of suggestions, and tone distribution across the team. The utility of this is debatable — some teams find it useful for coaching, others find it mildly creepy. You can also turn analytics off at the user level.

Enterprise adds SAML SSO, advanced security controls, HIPAA compliance, and a dedicated customer success person. Pricing is negotiated — typically $20-30/user/month at scale.

The honest question in 2026 is whether you need Grammarly when ChatGPT and Claude exist. The answer depends on your workflow.

If you write in lots of different apps all day — email, Slack, docs, LinkedIn, customer support tickets — Grammarly's in-app presence saves enormous friction. Copy-pasting text to ChatGPT, getting edits back, pasting back into the original app is a real tax. Grammarly lives where you write.

If you do almost all of your writing inside one app — just Google Docs, or just ChatGPT itself, or just a dedicated writing editor — Grammarly's value is thinner. You can just paste your work into ChatGPT and ask for edits. Many writers have dropped Grammarly for exactly this reason.

Against ProWritingAid: ProWritingAid is better for long-form fiction and academic writing. It gives deeper stylistic analysis — sentence length variety, word repetition patterns, pacing. If you write novels or dissertations, ProWritingAid is arguably the better choice. For business writing, Grammarly is faster and more practical.

Against Hemingway: Hemingway is free, simple, and focused on readability. It's a great complement to Grammarly, not really a replacement. I use both occasionally.

Against LanguageTool: LanguageTool is the open-source alternative, and it offers on-premise hosting for privacy-sensitive orgs. The grammar checking is surprisingly good but the AI features and polish lag Grammarly.

Against Writer: Writer is purpose-built for enterprise brand voice governance and is stronger than Grammarly Business if your main problem is large-scale content governance. For general writing assistance, Grammarly is better.

Grammarly reads everything you type in the apps where it's enabled. This includes emails, Slack messages, drafts you delete, and documents you don't publish. Grammarly's official stance is that it doesn't use customer data to train AI models, has SOC 2 Type 2 and HIPAA certifications on Enterprise, and encrypts data in transit and at rest.

For most people, this is fine. For lawyers, doctors, finance professionals, and anyone with IP-sensitive work, this is a real consideration. Some organizations ban Grammarly's browser extension for this reason and require employees to use only the standalone editor. LanguageTool's on-premise option is the usual replacement in those cases.

Grammarly Free is genuinely useful and you should probably have it installed just for the typo catching.

Grammarly Premium at $12/month is worth it if you write professionally inside multiple apps and want real-time tone, clarity, and style polish everywhere. This is the sweet spot for knowledge workers, consultants, and anyone who wants their writing to look sharp without manually running it through ChatGPT.

Grammarly Business at $15/user/month is worth it for teams of 5+ writers where brand voice consistency matters. The style guide feature alone can justify the cost.

Grammarly Enterprise is for larger orgs that need SSO, compliance, and volume pricing.

What Grammarly is not: a replacement for a chatbot. If you want to have a conversation, draft from a prompt, or do research-heavy writing, use ChatGPT or Claude. Grammarly is a companion, not a destination.

After eight years on Premium, I still find Grammarly paying for itself every month. The real-time tone feedback on emails alone catches things that would have caused small workplace friction. For the right kind of writer — one who writes in lots of places, cares about polish, and doesn't want to route every sentence through a chatbot — Grammarly is still the best tool for the job.