Grammarly is one of those tools that most people have tried at some point. The free browser extension catches typos, fixes grammar, and has quietly become part of how a lot of people write online. The question that comes up repeatedly is whether paying for the Pro version is actually worth it or whether the free plan does enough.
The honest answer is that it depends on how much writing you do and what you need the writing to accomplish. Here is a clear breakdown of what you get at each level.
What Grammarly Does
Grammarly is a writing assistant. It runs in the background as you type, catching spelling errors, grammatical mistakes, punctuation issues, and clarity problems in real time. It works across browsers, in Google Docs, in email clients, in desktop apps, and through a standalone editor. The coverage is broad enough that for most people it just becomes part of how they write.
The free version handles the basics well. Spelling, grammar, punctuation. For casual writing, that is probably enough. The Pro plan goes further into tone, style, clarity rewrites, plagiarism detection, and AI-assisted suggestions. The gap between the two has widened since Grammarly built out its AI features.
Free vs Pro: What You Actually Get
| Feature | Free | Pro ($12/month annually) |
|---|---|---|
| Grammar and spelling checks | Yes | Yes |
| Punctuation | Yes | Yes |
| Tone detection | Basic | Advanced |
| Clarity and conciseness suggestions | Limited | Full |
| Vocabulary suggestions | No | Yes |
| AI rewrites and improvements | Limited (100 prompts/month) | 2,000 prompts/month |
| Plagiarism detection | No | Yes |
| AI text detection | No | Yes |
| Full-sentence rewrites | No | Yes |
Grammarly Pricing in 2026
Grammarly recently renamed its Premium plan to Pro. Same features, same pricing, different name. Worth knowing if you have seen older articles referencing Premium.
| Plan | Price |
|---|---|
| Free | $0 |
| Pro (monthly) | $30/month |
| Pro (quarterly) | $20/month ($60 billed quarterly) |
| Pro (annual) | $12/month ($144 billed annually) |
| Enterprise | Custom pricing, contact sales |
The annual plan is the one to go with if you decide to pay. $12 a month versus $30 a month for the same features is a significant gap. Monthly billing only makes sense if you genuinely only need Pro for a short project and plan to cancel.
The AI Features in 2026
The biggest thing that has changed in Grammarly over the past couple of years is the AI side. Pro users get 2,000 AI prompts per month, which lets you ask Grammarly to rewrite a paragraph, change the tone of a section, make something shorter, or generate a draft from a prompt. This overlaps with what ChatGPT and other AI writing tools do, but Grammarly’s version is integrated directly into your editing workflow rather than requiring you to switch tools.
For website owners writing blog posts, product descriptions, or marketing copy, this is more useful than it sounds. Being able to highlight a clunky sentence and ask for a better version without leaving your editor saves real time.
What Grammarly Does Well
- Works across almost every platform you already use. No friction
- The free plan is genuinely useful for everyday writing
- Tone detection catches things that grammar checks miss, particularly for professional or client-facing writing
- Plagiarism detection in Pro is reliable and useful for anyone publishing content
- The AI rewrite features are well-integrated and faster than switching to a separate tool
- AI text detection helps website owners check whether content they commissioned reads as AI-generated
Where It Falls Short
- The free plan has gotten more limited over time as Grammarly pushes more features behind the paywall
- At $30 a month on monthly billing, it is genuinely expensive for what it does
- The AI suggestions occasionally push you toward flatter, more generic writing if you accept them without thinking
- It does not replace a human editor for anything important. It is a first-pass tool, not a final one
- No refunds on Pro plans, so if you sign up and do not like it, you are stuck until the billing period ends
Who should use Grammarly Pro: anyone who publishes content regularly, writes for clients, runs a business blog, or creates marketing copy. $12 a month on an annual plan is easy to justify if writing is part of how you generate revenue or build an audience.
Who should stick with free: casual writers, people who only need basic error checking, or anyone who already has a solid editing process. The free plan handles the fundamentals and is not going away.
Frequently Asked Questions
Yes. The free plan catches grammar, spelling, and punctuation errors reliably. For everyday writing, email, and basic content it covers most of what you need. The gap to Pro becomes noticeable when you are producing content regularly and need help with clarity, tone, and rewrites.
Grammarly Pro is the paid tier, previously called Grammarly Premium. It adds advanced clarity suggestions, vocabulary improvements, full AI rewriting tools (2,000 prompts per month), plagiarism detection, AI text detection, and tone adjustments on top of the free plan’s grammar and spelling features.
The free plan costs nothing. Grammarly Pro costs $12 per month on an annual plan ($144 billed once a year), $20 per month on a quarterly plan, or $30 per month on a monthly plan. Enterprise pricing is custom and requires contacting sales.
Yes, and it is one of the strongest use cases for the Pro plan. The clarity and tone suggestions help bridge the gap between technically correct writing and natural-sounding English, which grammar checking alone does not fully cover.
Grammarly works in most browsers and therefore catches errors in the WordPress editor when you are writing in Chrome, Firefox, or Edge. It does not have a dedicated WordPress plugin but the browser extension covers the same ground in practice.