Grammarly review: Pro is $12 or $30 a month depending on how you pay
Grammarly folded Premium and Business into one Pro plan in 2026. The price swings 150 percent on billing cycle alone. What Free covers, and what the prompt limits mean.
Verdict
Grammarly Pro is $12 a month billed annually but $30 month-to-month, a 150 percent swing on billing cycle alone. The free plan covers grammar and 100 AI prompts. Pro adds 2,000.
Grammarly at a glance
- Starting price
- Free, then $12/mo
- Free plan
- Yes
- We tested for
- Two weeks
Pros and cons
What works
- The free plan is genuinely useful on its own: grammar, spelling, punctuation, and 100 AI prompts a month at no cost
- Works inside the applications you already write in, rather than being another tab to paste into and copy out of
- The 2026 consolidation folded the old Premium and Business tiers into one Pro plan, which removed a confusing middle tier
- Plagiarism detection and AI-text detection are included on Pro rather than sold as separate add-ons
What does not
- The billing-cycle price swing is severe: $12 a member a month annually versus $30 month-to-month, meaning a business testing it monthly pays two and a half times the advertised rate
- AI prompts are metered rather than unlimited, and heavy users on Pro can exhaust 2,000 a month
- The Pro plan caps at 149 members, so a larger organisation is pushed to custom-quoted Enterprise
- Unlimited AI prompts require Enterprise, which has no published price
What Grammarly is now, after the 2026 change#
Grammarly used to sell Premium to individuals and Business to teams. In 2026 it folded both into a single Pro plan that covers individuals and teams up to 149 members, with Enterprise above that.
That simplified the lineup, but it introduced a pricing quirk worth understanding before buying.
$12 or $30
Same Pro plan, different billing cycle
$12 per member per month billed annually. $20 billed quarterly. $30 month-to-month. The plan is identical; only the commitment changes.
The billing cycle is the biggest decision#
Most software charges a modest premium for monthly billing, typically 15 to 25 percent. Grammarly charges 150 percent more to pay month-to-month than annually.
What the free plan actually covers#
The free tier is more capable than most freemium writing tools. It includes full grammar, spelling, and punctuation checking, tone visibility, and 100 AI prompts a month.
For someone whose main need is having their own writing corrected, the free plan is genuinely sufficient. The upgrade case is specifically about AI generation volume and the rewriting features.
| Free | Pro | Enterprise | |
|---|---|---|---|
| Grammar and spelling | Yes | Yes | Yes |
| AI prompts / month | 100 | 2,000 per member | Unlimited |
| Full-sentence rewrites | No | Yes | Yes |
| Plagiarism detection | No | Yes | Yes |
| Style guides | No | 1 | Unlimited |
| Team size | Individual | Up to 149 | Unlimited |
Prompts are metered, which matters for heavy users#
2,000 prompts a member per month sounds generous, and for most people it is. But a prompt is consumed by every AI request, including small rewrites. Someone leaning on Grammarly for drafting rather than checking can work through it, and the only way past the cap is Enterprise, which has no published price.
Where Grammarly fits against dedicated writing tools#
Grammarly is a checker that gained AI generation, not a generator that gained checking. For polishing writing that already exists, inside the applications where it exists, it is the strongest option in this category. For producing large volumes of new content from briefs, a purpose-built tool like Jasper or Copy.ai gives more output per dollar.
Grammarly pricing
| Plan | Price | What you get | Best for |
|---|---|---|---|
| Free | $0forever | Grammar, spelling, and punctuation checking, tone visibility, 100 AI prompts per month | Anyone who mainly wants their writing checked rather than generated |
| Pro | $12per member / month billed annually ($20 quarterly, $30 month-to-month) | Everything in Free, plus 2,000 AI prompts per member per month, full-sentence rewrites, tone adjustment, plagiarism detection, AI-text detection, 1 style guide, 1 brand tone, team analytics | A writer or a team up to 149 people who use AI drafting regularly |
| Enterprise | Customcontact sales | Everything in Pro, plus unlimited AI prompts, SAML SSO, SCIM, data loss prevention, audit logs API, unlimited style guides, custom roles | Organisations past 149 members or with formal security requirements |
Prices in US dollars, checked on August 13, 2026. Vendors change pricing without notice.
Who Grammarly is for
Buy it if
- You write a lot inside other applications, email, docs, a CMS, and want checking to happen there rather than in a separate tab
- You can commit annually, which is where the $12 price actually applies
- Your main need is improving writing you already produce, rather than generating it from scratch
Skip it if
- You want to pay month-to-month while testing; $30 a member is poor value against dedicated AI writing tools at similar prices
- You need heavy AI generation rather than checking, where a purpose-built writing tool gives more output per dollar
Frequently asked questions
- How much does Grammarly Pro cost?
- Grammarly Pro is $12 per member per month billed annually, $20 per member billed quarterly, or $30 per member month-to-month. The annual commitment is where the widely quoted $12 figure applies.
- Is the free version of Grammarly good enough?
- For grammar, spelling, punctuation, and tone checking, yes. The free plan also includes 100 AI prompts a month. If you mainly want your own writing corrected rather than generated, free covers it.
- What happened to Grammarly Business?
- Grammarly consolidated Premium and Business into a single Pro plan in 2026. Pro now serves both individuals and teams up to 149 members, and organisations past that size move to custom-quoted Enterprise.
- What are AI prompts and how many do I get?
- A prompt is one AI request, such as rewriting a sentence or generating a draft. The free plan includes 100 per month, Pro includes 2,000 per member per month, and Enterprise is unlimited.
Written by
Dana Whitfield
Founder and lead reviewer
Dana spent nine years running a six-person marketing agency in Austin, where payroll depended on picking software that actually shipped work. She started Tested AI after buying one too many tools on the strength of a demo video. She has personally paid for and run every tool reviewed on this site for at least two weeks of real client work before scoring it.
- Nine years running a marketing agency
- Google Analytics 4 certified
- 68 AI tools bought and tested