Overview
A writing assistant for grammar, tone, clarity, rewriting, and communication support across everyday business apps.
Key features
- Works everywhere: browser, desktop, Office, Google Docs
- Tone detection and adjustment suggestions
- Full-sentence rewrites, not just error flags
- Plagiarism checker on Pro
- Generative AI for drafting and shortening
Trial checklist
Use a real task involving email polishing—not a demo prompt. Verify whether works everywhere: browser, desktop, office, google docs materially reduces editing or setup time. Record output quality, time to a publishable result, and total plan usage. Pay particular attention to less powerful for deep research so factor that into your monthly budget. Repeat the same task in at least one alternative before deciding.
Use category-specific evidence
Arena Text Leaderboard [1] ↗ · LiveBench [4] ↗ · Artificial Analysis methodology [5] ↗
Arena Text is a human-preference leaderboard from anonymous pairwise battles. Its rank is the model's position; its rating is the statistical preference score; and any ± value is a confidence interval, not a guarantee of quality. See benchmark policy →
Pricing
Current official summary: Free: $0/month and 100 generative-AI prompts per month. Pro: displayed at $12 USD and includes 2,000 AI prompts per member per month, unlimited personalized suggestions, full-sentence rewrites, tone controls, plagiarism checking, and AI-generated-text detection. Enterprise: contact sales and includes unlimited prompts per member per month plus enterprise controls. The extracted pricing page did not unambiguously expose the billing cadence attached to the displayed $12 Pro amount.
Open verification questions
- The billing cadence represented by the $12 Pro price was not rendered unambiguously in the retrieved official pricing text.
- Grammarly's exact treatment may differ for negotiated Enterprise agreements, which are governed by a separate Customer Business Agreement rather than the public self-service terms.
Official sources confirm AI drafting, rewriting, tone adjustment, fluency suggestions, grammar assistance, plagiarism checking, and AI-text detection. For Free, Premium, and single-user Pro accounts, Product Improvement and Training is enabled by default, but users can opt out; when disabled, user content is not used for model training, validation, or product improvement. Multi-user accounts bought directly online are also enabled by default, with an administrator opt-out. Enterprise-tier, sales-purchased Pro/Business, and Education accounts have training disabled by default. Grammarly says its external LLM service providers may receive prompts and context to provide generative features but may not train their models on user content. Under the October 29, 2025 Superhuman terms, inputs and outputs are User Content, and users own all right, title, and interest in User Content; the terms also grant Superhuman a broad license for operating, improving, customizing, and developing its services.
Pricing changes often — verify current plans on the official site before buying. Dated snapshots: Pricing Watch.
Use cases
- Email polishing
- Tone edits
- Grammar checks
- Business writing
- Editing tone and clarity before hitting send
- Maintaining brand voice across a writing team
Pros
- Works across many apps
- Low-friction adoption
- Clear writing focus
Cons
- Less powerful for deep research
- Can over-standardize voice
Who Grammarly is for
Grammarly is aimed at teams and individuals who need business writing, grammar, tone, and communication quality across apps. It is designed for productivity workflows where output quality, adoption effort, and operating cost all matter. Compare alternatives first if you require self-hosting, unusually deep customization, or tighter policy controls than the official plan provides.
Buying decision
Business writing, grammar, tone, and communication quality across apps is the repeated job you need to improve.
Less powerful for deep research.
Run the trial checklist above and verify the current plan limit on the official pricing page.
Verdict
Bottom line: Grammarly has an AIToolsEssentials editorial score of 4.4/5. Works across many apps. The main trade-off to weigh: less powerful for deep research.
Test it against one real task from your workflow this week — that tells you more than any review.
How Grammarly compares
Within productivity, Grammarly goes up against Gamma, Airtable AI, Microsoft Copilot and 5 others. Its edge is works across many apps. Weigh that against the cons above — especially: less powerful for deep research — then check our side-by-side comparisons for task-level results before you commit.
How we evaluated
The AIToolsEssentials rating is an editorial score—not an external benchmark. It summarizes job fit, likely output quality, ease of adoption, and operational cost using published product information, benchmark context where the exact model is identifiable, and the repeatable trial checklist above. Benchmarks never determine the final product rating by themselves. See our editorial methodology, evidence ledger, and benchmark evidence policy.
Frequently asked questions
Is Grammarly Pro worth it?
For daily professional writing, yes — tone control and full rewrites are the real value. Occasional writers can stay free.
Does Grammarly work in Google Docs?
Yes, fully integrated including the sidebar and generative features.
Is my text private?
Grammarly states text is not sold; Enterprise adds contractual controls. Free users' text may be processed to provide the service.