Grammarly is one of the most popular writing tools on the planet, with over 30 million daily users. But the big question remains: is Grammarly Premium worth paying for, or does the free version give you everything you need?
We tested both tiers extensively across emails, blog posts, academic papers, and social media content. Here is our honest breakdown.
Quick Verdict
| Free | Premium | |
|---|---|---|
| Price | $0 | $12/mo (billed annually) |
| Grammar & spelling | Yes | Yes |
| Tone detection | Basic | Advanced |
| Full sentence rewrites | No | Yes |
| Plagiarism detection | No | Yes |
| AI writing assistant | Limited | Full access |
| Best for | Casual writers | Professionals & students |
What Grammarly Free Gives You
The free tier is surprisingly capable. Here is exactly what you get:
Core Writing Corrections
- Spelling mistakes — Catches typos and misspellings - Grammar errors — Subject-verb agreement, tense issues, article usage - Punctuation — Missing commas, apostrophe errors, run-on sentences - Conciseness suggestions — Flags wordy sentencesBrowser Extension
The free browser extension works across Gmail, Google Docs, social media, and virtually any web text field. This alone makes it incredibly useful.Tone Detection (Basic)
Grammarly Free tells you if your writing sounds friendly, formal, or confident—but without the detailed breakdown that Premium provides.What Free Does NOT Include
- No sentence rewrites - No plagiarism checker - No vocabulary enhancement suggestions - No formality level adjustments - No style guide or brand tone features - Limited AI generation (100 prompts/month with GrammarlyGO)What Grammarly Premium Adds
1. Full Sentence Rewrites
This is arguably the most valuable Premium feature. Grammarly Premium suggests complete sentence rewrites that improve clarity, tone, and flow. Instead of just flagging errors, it offers better versions of your sentences.Example: - *Original:* "The meeting that was scheduled for Tuesday has been moved to Wednesday because of the fact that the client is not available." - *Premium rewrite:* "Tuesday's meeting moved to Wednesday because the client is unavailable."
2. Advanced Tone and Style Adjustments
Premium lets you set goals for your writing: - Audience: General, knowledgeable, expert - Formality: Informal, neutral, formal - Domain: Business, academic, technical, creative - Intent: Inform, describe, convince, tell a storyGrammarly then tailors its suggestions to match your goals.
3. Plagiarism Detection
Grammarly Premium checks your text against 16 billion web pages and ProQuest's academic databases. This is essential for: - Students submitting papers - Content creators publishing online - Professionals writing reports4. Vocabulary Enhancement
Premium suggests stronger word choices and flags overused words. It helps you avoid repetition and find more precise language.5. Full GrammarlyGO Access
GrammarlyGO is the AI writing assistant included with Premium. Free users get 100 prompts per month; Premium users get 1,000+ prompts. You can use it to: - Generate drafts from outlines - Rewrite paragraphs in a different tone - Brainstorm ideas - Reply to emails quicklyFeature Comparison Table
| Feature | Free | Premium |
|---|---|---|
| Spelling correction | Yes | Yes |
| Grammar checking | Yes | Yes |
| Punctuation | Yes | Yes |
| Conciseness | Basic | Advanced |
| Sentence rewrites | No | Yes |
| Tone detection | Basic | Full analysis |
| Formality adjustment | No | Yes |
| Plagiarism checker | No | Yes |
| Vocabulary suggestions | No | Yes |
| Fluency suggestions | No | Yes |
| Formatting issues | No | Yes |
| GrammarlyGO prompts | 100/mo | 1,000+/mo |
| Style guide | No | Yes |
| Analytics dashboard | No | Yes |
| Browser extension | Yes | Yes |
| Desktop app | Yes | Yes |
| Mobile keyboard | Yes | Yes |
Grammarly Premium Pricing (2026)
| Plan | Price | Billing |
|---|---|---|
| Monthly | $25/month | Billed monthly |
| Quarterly | $16.67/month | Billed quarterly |
| Annual | $12/month | Billed annually |
Who Should Stick with Free?
Grammarly Free is perfect if you: - Write casual emails and messages - Need basic spell-check and grammar correction - Already have strong writing skills - Only write occasionally - Use it alongside other tools
Who Should Upgrade to Premium?
Grammarly Premium is worth it if you: - Write professionally (emails, reports, proposals) - Are a student submitting academic papers - Create content for blogs or social media - English is your second language - Want the plagiarism checker - Need help with tone and style consistency
Real-World Savings
Consider what Grammarly Premium replaces: - Editing services: $50-200 per document - Plagiarism checker (standalone): $10-30/month - AI writing assistant: $10-20/month - Style guide tools: $5-15/month
At $12/month (annual billing), Grammarly Premium bundles all of these into one tool.
Alternatives to Consider
If Grammarly Premium does not fit your budget, consider: - QuillBot — Free paraphrasing tool with grammar checker - LanguageTool — Open-source alternative with a decent free tier - ProWritingAid — Similar features at a slightly lower price - Hemingway Editor — Free tool focused on readability
Our Recommendation
For most people, Grammarly Free is enough for daily writing tasks like emails and messages. The spelling and grammar checking is excellent and catches the majority of errors.
Upgrade to Premium if you write professionally, are a student, or create content regularly. The sentence rewrites and plagiarism checker alone justify the $12/month cost when billed annually.
The best approach: start with the free version, use it for a month, and see if you find yourself wanting the Premium features. Grammarly will show you locked Premium suggestions, so you will know exactly what you are missing.