This page may contain affiliate links. If you buy through our links, we may earn a commission at no extra cost to you. How we test →
Review · Updated May 2026
Grammarly review 2026: honest verdict after real testing
WS
WriterStack Editorial Team
Content writer · tested 40+ AI tools
Last tested: May 2026
Plan tested: Premium ($12/mo annual)
Our rating
4.1
★★★★☆
out of 5
Best free grammar toolWorks everywhereBrand new AI featuresNot a content generatorPremium is expensiveRequires existing draft
Grammarly is the most established writing tool in this comparison — and the only one that is primarily an editing assistant rather than a content generator. The free tier is genuinely useful and covers 90% of grammar and clarity needs. Grammarly Premium ($12-30/month) adds style, tone, and clarity suggestions that meaningfully improve professional writing. The 2024-2025 addition of Grammarly AI allows generation of drafts from prompts, bringing it into the AI writing category — though the generation quality is below Jasper, Copy.ai, or Koala in our tests. Best used as the final editing layer on content produced by other AI tools rather than as a primary content generator.
Works in Chrome, Word, Google Docs, and 500,000+ apps
Genuinely useful free tier — no credit card required
AI generation features added in recent updates
$20/upgrade affiliate commission via Impact
Plagiarism detection included in Premium
Cons
Not a content generator first — primarily an editing assistant
Grammarly AI generation quality below Koala, Copy.ai, Jasper
Premium at $30/month (annual) is expensive for editing-only use
Can be overly aggressive with style suggestions
Requires you to have existing content to improve
Grammarly pricing 2026
Here's every current plan with pricing verified in May 2026. Prices may change — check the tool's pricing page for the latest.
Plan
Price
Words/limit
Seats
Key features
Free
$0/mo
Unlimited editing
1
Basic grammar, spelling, punctuation checking
PremiumBest value
$12/mo (annual)
Unlimited
1
Style, tone, clarity, vocabulary, plagiarism detection, Grammarly AI
Business
$15/user/mo
Unlimited
3–149
Everything Premium + team analytics, admin controls, SAML SSO
Enterprise
Custom
Unlimited
150+
Custom security, dedicated support, API access
Our test results
We ran Grammarly through two of our five standardised writing tasks. Same prompt submitted on the same day — no regeneration, first result shown.
Task 1 — Blog introduction (150 words)
Prompt: "Write a 150-word blog intro about why most remote teams struggle with communication"
[Grammarly AI generation test — using the draft generation feature added in 2024]
For many remote teams, the communication problem isn't a lack of tools — it's a surplus of them. Messages scattered across email, Slack, project management software, and video calls create an illusion of constant communication while important context falls through the gaps between platforms. The teams that communicate most effectively in distributed environments tend to have fewer communication channels, not more, and clear agreements about which information lives where.
Quality: 7/10Polish: 9/10
Task score: 8.0/10
Task 2 — Email subject lines
Prompt: "Write 5 email subject lines for a productivity app targeting busy freelancers"
[Grammarly AI subject line test]
1. Reclaim your time with smarter freelance productivity
2. The productivity app freelancers actually recommend
3. Finally organise your freelance work in one place
4. Get more done with less effort — for freelancers
5. Your freelance workflow, simplified
Quality: 7/10Specificity: 6/10
Task score: 6.5/10
Ready to try Grammarly?
Free plan — basic grammar checks — see if it works for your writing tasks.
Grammarly is right for you if: you want to improve the quality and professionalism of your existing writing — whether AI-generated or human-written; you work across multiple platforms (Gmail, Word, Google Docs, Slack) and need a consistent editing layer everywhere; you're building a content workflow that combines an AI generator (Koala, Writesonic) with an editing polish layer.
Grammarly is not right for you if: you primarily need an AI content generator rather than an editor — for this, start with Copy.ai, Koala AI, or Writesonic; you're looking for SEO optimisation features; you need brand voice training for marketing teams.
Alternatives to Grammarly
ProWritingAid — deeper editing analysis
More detailed writing reports and style analysis than Grammarly. From $20/mo.
Grammarly Premium is worth it if you write professionally and care about the quality of your prose. The style and clarity suggestions catch issues that spell-check misses, and the tone detector helps calibrate professional communication. At $12/month on an annual plan it is reasonable value. If you only need basic grammar checking, the free tier covers it. If you need an AI content generator, there are better-value options.
Yes — Grammarly has a native Google Docs integration that works in real-time as you type. It also has a Chrome extension that activates across all web-based editors including Gmail, LinkedIn, Slack, Notion, and thousands of other platforms. The desktop app extends coverage to Microsoft Word, Outlook, and other native applications.
Grammarly's affiliate program pays $0.20 for every free account created through your link and $20 for every premium plan purchase — managed through Impact. The 90-day cookie window is generous. The $20 per premium upgrade is lower than recurring commission programs, but Grammarly's brand recognition drives high conversion rates on free-tool and beginner content, making it effective for high-traffic informational pages.