Grammarly has three pricing tiers. Most people know this. What most people do not know — or do not bother to investigate — is where the meaningful feature boundaries fall, which tier actually changes writing outcomes versus which one feels like an upgrade without delivering measurable results, and how the math works out when you are buying for a team of ten, twenty, or a hundred people.
The difference between Grammarly Free and Premium is not just “more suggestions.” The difference between Premium and Business is not just “an admin dashboard.” Each tier unlocks capabilities that change how the tool functions in practice, and the right choice depends entirely on what you are trying to accomplish and how much writing quality is worth to your operation.
This article breaks down all three tiers as they exist in 2026, compares them feature by feature, and helps you decide which plan — if any — actually improves your return on investment.
Grammarly Free
What You Get
Grammarly Free is not a trial version with a countdown timer. It is a permanent, fully functional product that covers the fundamentals of writing assistance:
- Grammar and spelling correction. The core engine catches subject-verb agreement errors, misplaced commas, misspellings, article errors, and basic punctuation problems.
- Conciseness suggestions. Grammarly flags wordy constructions and suggests shorter alternatives. “Due to the fact that” becomes “because.” “In order to” becomes “to.”
- Tone detection (basic). The free tier identifies the overall tone of your text — formal, informal, confident, uncertain — and displays it as a summary, though it does not provide actionable suggestions for tone adjustment.
- Limited AI prompts. GrammarlyGO is available in the free tier with a limited number of AI prompts per month (approximately 100 as of early 2026).
- Cross-platform availability. Free users get the browser extension (Chrome, Edge, Firefox, Safari), desktop apps (Windows, macOS), mobile keyboards (iOS, Android), and integrations with Google Docs and Microsoft Office.
What You Don’t Get
- Advanced clarity and engagement suggestions
- Full-sentence rewrites
- Tone adjustment suggestions (not just detection)
- Vocabulary enhancement
- Plagiarism detection
- Style guide enforcement
- Team features of any kind
- Unlimited AI prompts
Who It’s For
Grammarly Free is a genuinely useful product for anyone who writes in English and wants to catch basic errors. Students writing term papers, job seekers polishing resumes, casual bloggers, and professionals who primarily need a spell checker with modest intelligence will find Free sufficient. It costs nothing, and it works across virtually every platform where you type.
The honest assessment: Grammarly Free catches roughly 60-70% of the issues that Premium catches. For writing where basic correctness is the bar — internal emails, quick messages, personal writing — the free tier delivers meaningful value. For writing where quality, tone, and polish matter — client communications, published content, marketing materials — the free tier is noticeably inadequate.
Grammarly Premium
What You Get (Above Free)
Grammarly Premium is the individual power-user tier. It adds:
- Advanced clarity suggestions. Beyond conciseness, Premium identifies vague language, unclear antecedents, and sentences that are grammatically correct but structurally confusing.
- Full-sentence rewrites. Grammarly suggests complete rewrites of awkward or unclear sentences, not just word-level substitutions.
- Tone adjustment recommendations. Premium does not just detect tone — it provides specific suggestions for shifting your writing toward a target tone. If your email sounds “accusatory” and you want “diplomatic,” Premium shows you how to get there.
- Engagement suggestions. The tool identifies passages that might lose the reader’s attention and suggests revisions to improve flow and interest.
- Vocabulary enhancement. Premium suggests more precise or vivid word choices, going beyond basic synonym swaps.
- Plagiarism detection. Checks your text against a database of over 16 billion web pages and academic papers from ProQuest.
- Unlimited AI prompts. GrammarlyGO operates without monthly limits, supporting full-draft generation, rewriting, brainstorming, and summarization.
- Multiple language support. Premium supports English, Spanish, French, German, Polish, Portuguese, and Ukrainian with varying depth.
Pricing
- Monthly: ~$30/month
- Quarterly: ~$20/month (billed as ~$60 every three months)
- Annual: ~$12/month (billed as ~$144 per year)
The annual plan represents a 60% discount over monthly billing — one of the more aggressive annual incentives in the SaaS market. Most individual users who commit to Grammarly will find the annual plan is the only pricing that makes economic sense.
Who It’s For
Writers, editors, content marketers, freelancers, consultants, graduate students, and professionals who produce polished writing regularly. If your income or professional reputation depends on writing quality, Premium pays for itself quickly. At $12/month on the annual plan, it costs less than a single hour of freelance editing — and it works continuously across every word you write.
The ROI calculation for individuals: If Grammarly Premium saves you 30 minutes per week on editing (a conservative estimate for someone who writes daily), that is 26 hours per year. At even a modest $30/hour valuation of your time, that represents $780 in time savings against a $144 annual cost — a 5.4x return.
Grammarly Business
What You Get (Above Premium)
Grammarly Business is not “Premium for teams.” It is a different product designed for organizational writing quality:
- Centralized admin console. Manage users, configure settings, and monitor adoption from a single dashboard.
- Team analytics. Track team-wide metrics including suggestion categories, acceptance rates, tone consistency scores, and writing productivity trends. Analytics can be segmented by department, team, or individual.
- Style guide. Define and enforce organization-specific writing rules: preferred terminology, banned phrases, capitalization standards, abbreviation policies, and punctuation conventions. Rules appear as real-time inline suggestions for all team members.
- Brand tone profiles. Configure the target tone for your organization’s communications. All tone suggestions and GrammarlyGO outputs align with this profile.
- SAML SSO. Single sign-on through your identity provider (Okta, Azure AD, OneLogin, etc.) for streamlined authentication.
- SCIM provisioning. Automated user provisioning and deprovisioning through your directory service.
- Priority support. Faster response times and dedicated support channels.
- Account roles. Assign admin, manager, and member roles with appropriate permissions.
Pricing
- Business: ~$15/user/month (billed annually). Minimum 3 users.
- Enterprise: Custom pricing. Adds HIPAA compliance, advanced security certifications, dedicated customer success manager, and custom contract terms. Typically requires a minimum of 50+ seats.
Who It’s For
Content teams, marketing departments, customer support organizations, consulting firms, agencies, and any group of 3+ professionals whose collective writing quality directly impacts business outcomes. The style guide and brand tone features are the primary value differentiators — they solve problems that no number of individual Premium licenses can address.
Feature Comparison Table
| Feature | Free | Premium | Business |
|---|---|---|---|
| Grammar & spelling | Yes | Yes | Yes |
| Conciseness suggestions | Yes | Yes | Yes |
| Tone detection | Basic | Advanced + suggestions | Advanced + team profiles |
| Full-sentence rewrites | No | Yes | Yes |
| Engagement suggestions | No | Yes | Yes |
| Vocabulary enhancement | No | Yes | Yes |
| Plagiarism detection | No | Yes | Yes |
| AI prompts (GrammarlyGO) | ~100/month | Unlimited | Unlimited |
| Custom style guide | No | No | Yes |
| Brand tone profiles | No | No | Yes |
| Team analytics | No | No | Yes |
| Admin console | No | No | Yes |
| SAML SSO | No | No | Yes (Enterprise) |
| SCIM provisioning | No | No | Yes (Enterprise) |
| SOC 2 Type II | Yes | Yes | Yes |
| HIPAA compliance | No | No | Enterprise only |
| Price (annual billing) | $0 | ~$12/mo | ~$15/user/mo |
The ROI Case for Each Tier
Free Tier ROI
The ROI of Grammarly Free is infinite in the mathematical sense — any value delivered at zero cost is an infinite return. Practically, Grammarly Free catches enough errors to prevent embarrassing mistakes in casual and semi-professional writing. For students and personal use, there is no reason not to use it.
However, “free” does not mean “sufficient.” If you are producing content that generates revenue — sales emails, marketing copy, client proposals — the gap between Free and Premium represents real money left on the table. A proposal with inconsistent tone and unclear sentences loses deals. A marketing email with awkward phrasing reduces conversion rates. The cost of these quality gaps far exceeds $12/month.
Premium Tier ROI
For individuals, Premium’s ROI is straightforward to calculate:
Time savings: Premium’s advanced suggestions and AI rewriting reduce editing time. If you write for 2+ hours daily, expect 30-60 minutes saved per week.
Quality improvement: Better writing produces better outcomes. Marketers see higher engagement rates. Salespeople close more deals. Freelancers retain more clients. These are difficult to attribute precisely to Grammarly, but the directional impact is clear.
Error prevention: A single typo in a client proposal might not cost you the deal, but it chips away at credibility. Premium catches errors that Free misses, and over thousands of communications per year, that gap compounds.
Break-even estimate: If Premium improves a single business outcome by more than $144 in a year — one additional freelance client retained, one proposal that converts, one marketing email that performs 2% better — the tool has paid for itself.
Business Tier ROI
For teams, Business ROI scales differently:
Consistency value: The style guide and brand tone features ensure that every team member produces writing that meets the same standard. The value of this consistency is not in individual error correction but in brand perception. When customers, prospects, and partners interact with your organization, they encounter a unified voice. This is worth more than the sum of individual writing improvements.
Time savings at scale: If Premium saves one person 30 minutes per week, Business saves 30 minutes per person per week. For a team of 20, that is 10 hours of collective editing time saved weekly — 520 hours annually. At $50/hour average loaded labor cost, that is $26,000 in time savings against a Grammarly Business cost of $3,600/year (20 users × $15/month × 12 months). A 7.2x return.
Reduced editorial bottlenecks: Without Grammarly Business, style consistency requires manual editorial review. A dedicated editor reviewing every piece of content before publication is expensive and creates bottlenecks. The style guide automates the majority of this review, freeing editors to focus on strategic improvements rather than catching terminology violations.
Onboarding acceleration: New team members write in the company’s voice from day one because the style guide and tone profile guide them automatically. Without this, new hires typically require 2-3 months to internalize an organization’s writing standards.
When to Upgrade — And When Not To
Stay on Free if:
- You write primarily for personal purposes (social media, personal emails, journaling)
- You are a student with no income from writing
- You use another writing tool as your primary assistant and only want Grammarly as a backup spell checker
- Your writing needs are minimal (fewer than 5 substantive pieces per week)
Upgrade to Premium if:
- You write professionally (freelancing, content marketing, consulting, sales)
- You produce 5+ substantive written pieces per week
- Writing quality directly affects your income or professional reputation
- You need plagiarism detection for academic or professional work
- You write in multiple languages and need correction beyond English
Upgrade to Business if:
- You manage a team of 3+ people who write externally
- Brand voice consistency is a stated organizational priority
- You currently rely on manual editorial review to enforce writing standards
- You need analytics to measure and improve team writing quality over time
- You require SSO, SCIM, or SOC 2 compliance for procurement approval
Do not upgrade if:
- You are upgrading out of curiosity rather than need. Grammarly Free is genuinely good, and paying for Premium without using its advanced features is waste.
- You expect Grammarly to replace an editor. It will not. It catches mechanical errors and suggests improvements, but it cannot evaluate whether an argument is logically sound, whether a narrative is compelling, or whether a piece of content achieves its strategic objective.
- Your team already has a working editorial process that produces consistent results. Adding Grammarly Business to a well-functioning editorial workflow may create redundancy rather than improvement.
The Honest Answer
For most individual professionals who write regularly, Grammarly Premium at the annual price of ~$12/month is the best value in the writing assistant market. The combination of advanced tone detection, AI rewriting, and plagiarism detection at this price point has no direct equivalent.
For teams, Grammarly Business at ~$15/user/month is worth the investment if — and only if — you use the style guide and brand tone features. Without these, Business is just Premium with an admin dashboard, and the incremental cost is not justified. The style guide is what transforms Grammarly from an individual productivity tool into an organizational consistency engine, and that transformation is where the ROI lives.
If you are not sure which tier is right, start with Free. Use it for two weeks. Notice every time you think, “I wish Grammarly would catch this” or “I wish this rewrite was better.” If those moments happen daily, Premium is the answer. If they happen across your entire team, Business is the answer.
References
- Grammarly Plans and Pricing: https://www.grammarly.com/plans
- Grammarly Business: https://www.grammarly.com/business
- Grammarly Enterprise: https://www.grammarly.com/business/enterprise
- Grammarly GrammarlyGO Overview: https://www.grammarly.com/grammarlygo
- Grammarly Trust Center (SOC 2, Security): https://www.grammarly.com/trust
- Grammarly Style Guide Feature: https://www.grammarly.com/business/styleguide