Grammarly
Correction everywhere you type, generation almost nowhere
Grammarly is a writing assistant that layers grammar correction, clarity rewriting, tone adjustment, plagiarism detection, AI-content detection, and prompt-based generative writing on top of whatever application you are already typing in, delivered through browser extensions, desktop apps, a Microsoft Word add-in, and mobile keyboards; it is free for basic correction and $12 per member per month on annual billing for the Pro tier, and since October 2025 the company behind it has been named Superhuman after acquiring Coda and Superhuman Mail.
Overview
Grammarly is the oldest product in this category by roughly a decade and the only one most people have already installed. It launched in 2009 as a subscription grammar checker aimed at students, spent the 2010s becoming the default browser extension for anyone who writes English professionally, and arrived at the generative era with something none of its competitors had: distribution into the actual applications where writing happens. It does not ask you to come to a content dashboard. It sits in Gmail, Slack, LinkedIn, Word, Google Docs, and your phone keyboard, and it interrupts you there.
That distribution is the whole argument for the product, and it is also why Grammarly fits awkwardly in a category full of article generators. Grammarly does not write blog posts at volume. It has no SERP analysis, no CMS publishing, no bulk keyword-to-article pipeline, no article meter. What it has is a correction and revision layer that improves prose you were going to write anyway, plus a prompt-based generation feature metered at 100 AI prompts a month on the free tier and 2,000 per member per month on Pro. If you buy Grammarly expecting Koala or Byword, you will be baffled. If you buy it expecting a spell checker, you are underselling it.
The corporate situation deserves a plain statement, because it changed recently and buyers keep getting it wrong. Grammarly acquired Coda in January 2025, acquired the email client Superhuman in July 2025, and in October 2025 renamed the parent company Superhuman, installing Coda co-founder Shishir Mehrotra as chief executive. The Grammarly product still exists under its own name and its own pricing, but it is now one component of a four-part suite alongside Superhuman Docs (the former Coda), Superhuman Mail, and an assistant called Superhuman Go. Coda is already gone as a brand. Nobody has said Grammarly will follow, but the direction of travel is not subtle.
For a small business the pricing simplified in 2026 in a genuinely useful way. The old Premium and Business split collapsed into one Pro plan at $12 per member per month on annual billing, $20 quarterly, or $30 month to month, covering individuals and teams up to 149 members with roles, permissions, user groups, shared snippets, and team analytics included rather than gated behind a business SKU. That is an unusually honest bit of packaging in a market where everyone else charges more for the second seat.
Best for
Small businesses and teams whose writing problem is quality and consistency across email, chat, proposals, and documents rather than volume of published articles, especially organizations with non-native English speakers, client-facing writers, or a support function that needs everyone to sound the same for $12 a seat.
Not the right fit for
- Anyone whose actual job is publishing SEO articles at volume; Grammarly has no SERP analysis, no keyword workflow, no CMS publishing, and no bulk generation, so it cannot replace Koala, Byword, or Article Forge in any respect.
- Buyers who want to choose the underlying model or understand what is running; Grammarly offers no model picker and no published per-feature model disclosure, which in 2026 is a meaningful transparency failure.
- Writers who find inline suggestion aggressive and homogenizing; Grammarly's clarity recommendations flatten voice, and experienced writers routinely turn most of them off, which raises the question of what the $12 is buying.
- Fiction and long-form narrative writers; the suggestion engine treats stylistic choices as errors and there is nothing resembling Sudowrite's story structure or continuity tooling.
- Organizations that need advanced governance on a published price; SSO, SCIM, DLP, audit logs, and unlimited brand tones are all Enterprise-only and Enterprise is contact-sales, so the self-serve ceiling is lower than it first appears.
How it works
- 1
You install Grammarly where you write. That means a Chrome, Edge, Safari, or Firefox extension for the web, a macOS or Windows desktop app that overlays native applications, a Microsoft Word add-in, and iOS and Android keyboards. There is also a web editor, but it is the least important surface; the product's value is that you never have to open it.
- 2
As you type, Grammarly flags spelling, grammar, punctuation, and clarity problems inline and offers one-click fixes. Free covers basic correctness and tone detection. Pro adds full-sentence rewriting, tone adjustment, fluency suggestions for non-native English writers, and the unlimited personalized suggestions that make up most of the perceived quality difference.
- 3
For generation you invoke a prompt. Ask it to draft a reply, expand a bullet list, shorten a paragraph, or change the register, and it produces text in place. This is metered: 100 prompts a month on Free, 2,000 per member per month on Pro. Grammarly does not let you choose which underlying model runs your prompt and does not publish a per-feature model list, which is a real gap in 2026 when nearly every serious competitor names its models.
- 4
Team features run through a Feature Management Hub where an administrator sets roles and permissions, defines up to two user groups on Pro, and distributes shared Knowledge Share entries and Snippets so a support team or a sales team writes the same phrases the same way. Individual and team analytics report usage and writing scores. SAML SSO, SCIM provisioning, data loss prevention, audit logs, unlimited brand tones, and bring-your-own-key encryption are all held back for the contact-sales Enterprise tier.
Feature breakdown
26 features in 5 modulesCorrection and revision
The original product, still the reason most people pay.- Grammar, spelling, and punctuation
- Real-time inline correction across every surface Grammarly is installed on, included on the free tier. This is the baseline and it is genuinely good after fifteen years of tuning.
- Full-sentence rewriting
- Pro-only. Rewrites entire sentences for clarity and concision rather than fixing individual words, which is the single largest quality gap between Free and Pro.
- Clarity and concision suggestions
- Flags wordiness, passive voice, and hedging. Useful in business writing, actively harmful in anything with a deliberate voice, and the reason experienced writers disable large parts of it.
- Tone detection and adjustment
- Free detects how your writing is likely to read; Pro lets you shift register, for example from blunt to diplomatic, before you send.
- Fluency for non-native English writers
- A Pro feature that reworks phrasing that is grammatically correct but idiomatically off. This is where Grammarly earns its keep in international teams and it is not well replicated by generic chat assistants.
- Citation generation
- Builds formatted citations, a legacy of the product's academic origins and largely irrelevant to business buyers.
Generative writing
Metered by prompts, capable but deliberately shallow.- Prompt-based generation
- Ask for a draft, a reply, an expansion, or a summary and Grammarly produces it in place. Metered at 100 prompts a month on Free and 2,000 per member per month on Pro.
- In-context drafting
- Generation happens inside the application you are already in, so a Gmail reply is drafted in Gmail. This is the one thing Grammarly does that a frontier chat subscription genuinely does not.
- No model selection
- You cannot pick the model and Grammarly does not publish which models power which features. Its own materials describe a blend of proprietary models and third-party large language models, without naming versions.
- Brand tones
- Stored tone profiles applied across a team's writing. Pro includes them; unlimited brand tones are an Enterprise feature.
- Snippets
- Reusable text blocks expanded by shortcut across every application, which for a support or sales team is quietly the highest-value feature on the Pro plan.
Originality and detection
Both checkers, with the usual caveat about what detection is worth.- Plagiarism detection
- Pro-only, checking against web and academic sources. Adequate for catching accidental reuse, not a substitute for a dedicated originality service in a publishing operation.
- AI-content detection
- Pro-only. Grammarly will tell you how much of a document reads as machine-generated. Treat the number as directional at best; no detector on the market, Grammarly's included, is reliable enough to base a decision on.
- Authorship tracking
- Records how text entered a document, which some educational and enterprise buyers use to demonstrate provenance rather than to accuse anyone of anything.
- No humanizing or detector evasion
- Unlike QuillBot, Grammarly does not sell a feature whose purpose is to make machine text pass as human. That is a point in its favor and worth noting explicitly in a category where the opposite is common.
Team administration
Generously packaged up to 149 members, then a cliff.- Roles and permissions
- Included on Pro rather than reserved for a business tier, which is unusual. Custom and unlimited roles remain Enterprise-only.
- Feature Management Hub
- Lets an administrator turn specific Grammarly capabilities on or off across the organization, which matters if you want correction without generation.
- User groups
- Up to two groups on Pro so, for example, support and sales can carry different tone and snippet sets. Unlimited groups are Enterprise-only.
- Knowledge Share
- A shared repository of approved terminology and phrasing that suggestions draw on, which is the closest thing Grammarly has to a style guide.
- Team and individual analytics
- Usage, writing scores, and activity reporting per member. Enterprise adds an ROI report and an Effective Communication Score.
- Centralized billing
- One invoice for teams up to 149 members without moving to a sales-led contract.
Surfaces and platforms
The actual moat.- Browser extensions
- Chrome, Edge, Safari, and Firefox, covering web applications including Gmail, Slack, LinkedIn, and Google Docs.
- Desktop applications
- macOS and Windows apps that overlay native software, so correction follows you outside the browser.
- Microsoft Word add-in
- First-class Word integration, which is the surface most corporate documents are still written in.
- Mobile keyboards
- iOS and Android keyboards apply the same correction layer to phone typing.
- Web editor
- A standalone editor for people who want a clean surface, and the least used part of the product.
Use cases
4 documentedFounder writing investor updates and customer email in English as a second language
The grammar is correct but the phrasing reads slightly wrong to native speakers, and running every message through a chat assistant is too slow to be a habit.
Fluency suggestions and full-sentence rewriting apply inline in Gmail, so the correction happens where the writing happens without a copy-and-paste loop. This is the strongest case for paying $12.
Five-person support team that needs to sound like one company
Every agent phrases refunds, escalations, and apologies differently, and the tone drifts from friendly to curt depending on who is on shift.
Snippets distribute approved phrasing, Knowledge Share holds the terminology, brand tones enforce register, and team analytics show who is actually using it. All on Pro, no business-tier upsell.
Agency proofing client-facing deliverables
Proposals and reports go out with typos because the last read happens at 6pm and nobody wants to be the one who checks.
The Word add-in and desktop overlay catch errors in the document itself, and the plagiarism checker gives a defensible originality pass on anything that included subcontracted writing.
Marketer who already pays for a frontier chat subscription
Drafting is already handled by ChatGPT or Claude at $20 a month, and the question is whether Grammarly adds anything on top.
It adds correction in place across every application, which the chat subscription cannot do. It does not add better drafting. Buying both is defensible; buying Grammarly instead of a frontier subscription is not.
Pricing
from $0 (Free), then $12 per member per month billed annually (Pro)Freemium per-member subscription with three billing cadences on the paid tier and a contact-sales enterprise plan; generation is metered by AI prompts rather than words.
| Plan | Price | Includes |
|---|---|---|
| Free | $0 per month |
A complete correction product. The prompt allowance is the only hard generation limit. |
| Pro | $12 per member per month billed annually |
Also sold at $20 per member per month quarterly and $30 month to month. Covers teams up to 149 members. |
| Enterprise | Custom contact sales |
The only route to SSO, which is the gate most regulated buyers hit. |
Billing notes
- Annual billing at $12 per member per month is a 60 percent discount on the $30 month-to-month rate, which is one of the steeper annual penalties in this category; a quarterly option at $20 sits in between.
- The 2026 repackaging folded the old Premium and Business plans into a single Pro tier, so team management features that used to require a business SKU now arrive at the individual price.
- Pro covers organizations up to 149 members. Above that, or the moment you need SSO, you are in a contact-sales Enterprise conversation with no published price.
- Generation is metered in AI prompts, not words or credits, and the vendor does not define what counts as one prompt in any precise way. At 2,000 prompts per member per month, most business writers will never see the ceiling.
- There is a 7-day free trial on Pro, and the free tier is permanent rather than a time-limited teaser.
Value assessment: At $12 a member on annual billing, Grammarly is fairly priced for what it uniquely does, which is correction and revision inside every application you already use, with team tone and snippet governance thrown in at no extra tier. Judged as a generative writing tool it is poor value: 2,000 prompts of an undisclosed model with no ability to choose it is a worse deal than a $20 frontier subscription, and the drafting quality is not competitive. The honest framing is that Pro is a $12 correctness and consistency layer with a generation feature attached, and it should be bought on the first half of that sentence. Free is genuinely usable and a large fraction of individual users never need to upgrade.
Strengths & limitations
Strengths
- Distribution into the applications where writing actually happens, across browsers, desktop, Word, and mobile keyboards, which no article generator in this category comes close to matching.
- Fifteen years of tuning on correction quality, particularly for non-native English writers, where the fluency suggestions solve a problem generic chat assistants handle clumsily.
- Team governance features including roles, user groups, Knowledge Share, Snippets, and brand tones are included at the $12 Pro price rather than gated behind a separate business tier.
- A permanently free tier that is a complete correction product, so evaluation costs nothing and a large share of individual users never need to pay.
- Notably declines to sell a detector-evasion or humanizing feature, which distinguishes it from several competitors whose main selling point is helping machine text pass as human.
- Deep pockets and long-term viability: the parent company raised at a $13B valuation, took $1B in non-dilutive financing in 2025, and acquired two substantial software companies.
Limitations
- No model transparency and no model selection. Grammarly will not tell you which large language model handles which feature, which is out of step with the category in 2026 and makes quality changes impossible to reason about.
- Generation is weak relative to a frontier chat subscription costing $20, so the 2,000-prompt allowance is not the reason to buy.
- Zero long-form SEO capability: no SERP analysis, no keyword workflow, no CMS publishing, no bulk generation, no internal linking.
- The clarity engine homogenizes voice, and its suggestions are calibrated for business correspondence rather than for writing with a deliberate style.
- SSO, SCIM, DLP, audit logs, and unlimited groups are all Enterprise-only with no published price, so the self-serve ceiling arrives earlier than the 149-member limit suggests.
- The company renamed itself Superhuman in October 2025 and has already retired the Coda brand. Grammarly keeps its name for now, but buyers should treat the product's long-term packaging as unsettled.
- The AI-content detector, like every AI-content detector, produces false positives on human writing and should not be used to make decisions about people.
Head-to-head comparisons
5 alternativesGrammarly vs QuillBot
from $0 (Free), then $8.33 per month billed annually ($99.95 per year) for PremiumBoth are cheap writing assistants sold to individuals, and both include plagiarism and AI detection. QuillBot is a paraphrasing engine with a humanizer whose explicit purpose is helping machine text evade detectors, at $19.95 monthly or $8.33 on annual billing. Grammarly is a correction layer with far better application coverage, no humanizer, and real team governance at $12 a seat. Choose QuillBot if rewriting existing text is the job; choose Grammarly if the job is making everything your team writes correct and consistent.
Full Grammarly vs QuillBot comparisonGrammarly vs Wordtune
from $0 free forever, then $4.89 per month billed annuallyWordtune and Grammarly overlap almost completely on rewriting and tone, and Wordtune's rewrite suggestions are often the more interesting of the two. Grammarly wins on breadth of surface coverage, correction depth, team administration, and price at scale. Wordtune is worth preferring only if you specifically want its rewriting model and do not need the Word add-in, desktop overlay, or team controls.
Full Grammarly vs Wordtune comparisonGrammarly vs Sudowrite
from $10 per month (Hobby and Student)Opposite ends of the same sentence. Grammarly polices prose against a business-writing standard; Sudowrite helps you produce fiction and treats stylistic deviation as the point rather than as an error. Novelists who run Grammarly over a manuscript spend their time dismissing suggestions. Use Sudowrite to write the book and Grammarly, if at all, only on the query letter.
Full Grammarly vs Sudowrite comparisonGrammarly vs Jasper
from $59 per seat per month billed annually, or $69 billed monthlyJasper is a marketing content platform with brand voice training, campaign workflows, and enterprise governance, priced accordingly. Grammarly is a correction layer at $12 that happens to generate. They are not substitutes: Jasper produces campaign assets, Grammarly makes whatever your team writes read properly. A marketing team of any size will end up with both or with Jasper plus a frontier subscription.
Full Grammarly vs Jasper comparisonGrammarly vs Anyword
from $39 per month billed annually, or $49 billed monthlyAnyword scores copy against predicted performance data and is built for conversion-focused marketers who need to justify a headline choice. Grammarly has no performance prediction and no channel-specific scoring at all. If your question is which of two subject lines will convert, Grammarly is silent; if your question is whether the email is well written, Anyword is the weaker tool.
Full Grammarly vs Anyword comparisonImplementation & onboarding
- Setup time
- Under ten minutes for an individual: install the extension, sign in, and it works. A team rollout takes an afternoon to configure roles, groups, Knowledge Share entries, and Snippets, plus whatever time your IT policy needs for extension approval.
- Learning curve
- Almost none for correction, which is the point. The generative prompts and the Feature Management Hub take a little exploration, and the real skill is deciding which suggestion categories to disable so the tool stops flattening your writing.
- Onboarding
- Entirely self-serve up to 149 members, including team setup and centralized billing. Enterprise adds dedicated support and a managed deployment path.
- Migration notes
- Nothing to migrate. Grammarly does not own your documents; it operates on text in place, so switching in or out is a matter of installing or uninstalling. Snippets and Knowledge Share entries are the only stored assets and both are small enough to rebuild by hand.
Platform, API & security
- Platforms
- Chrome, Edge, Safari, and Firefox extensionsmacOS and Windows desktop appsMicrosoft Word add-iniOS and Android keyboards and appsWeb editor
- API
- No published self-serve writing API for building on top of Grammarly. Enterprise offers an audit logs API for compliance reporting rather than a generation endpoint.
- Compliance
- SOC 2 Type 2GDPRCCPAEnterprise-grade privacy controls on Pro and above
- Data residency
- No published regional hosting options for self-serve tiers; enterprise arrangements are handled through sales.
- SSO
- SAML SSO and SCIM provisioning are Enterprise-only. Pro tiers use standard email or social sign-in.
- Security notes
- Grammarly states that it does not sell user data and offers enterprise-grade privacy and security from the Pro tier. Data loss prevention, bring-your-own-key encryption, Managed Mode, and audit logs are reserved for Enterprise. Because the product operates as an overlay across every application, an administrator should read the data-handling terms carefully before a company-wide rollout.
Support & resources
- Channels
- Email supportPriority support on ProDedicated support on Enterprise
- Documentation
- An extensive support center covering installation on every platform, feature behavior, billing, and team administration.
- Community
- No significant official user forum; the product is ubiquitous enough that third-party answers are easy to find.
Company
- Founded
- 2009
- Headquarters
- San Francisco, California, United States
- Ownership
- Venture-backed, operating since October 2025 under the parent company name Superhuman
- Founders
- Max Lytvyn, Alex Shevchenko, Dmytro Lider
- Employees
- Roughly 1,000 across the combined company (est. 2026)
- Funding
- Raised approximately $400M in equity including a $200M round in 2021 at a $13B valuation, followed by $1B in non-dilutive financing from General Catalyst in May 2025 used in part to fund acquisitions.
Funding history
| Round | Amount | Year | Notes |
|---|---|---|---|
| Series A | $110M | 2017 | Led by General Catalyst, the company's first outside capital after eight years of bootstrapping. |
| Series B | $90M | 2019 | Valued the company above $1B. |
| Series C | $200M | 2021 | Led by Baillie Gifford and BlackRock at a $13B valuation. |
| Non-dilutive financing | $1B | 2025 | From General Catalyst, structured against revenue rather than equity, and used to support acquisitions. |
Timeline
- 2009Founded by Max Lytvyn, Alex Shevchenko, and Dmytro Lider as a subscription grammar checker aimed at students.
- 2015Launches the free browser extension that turns the product from an academic tool into a default install for professional writers.
- 2017Raises a $110M Series A led by General Catalyst after eight years without outside capital.
- 2021Raises $200M at a $13B valuation, becoming one of the most valuable private software companies in writing.
- 2023Adds generative writing as GrammarlyGO, entering the AI content generation market it had previously sat adjacent to.
- 2025Acquires Coda in January and the email client Superhuman in July, then renames the parent company Superhuman in October with Coda co-founder Shishir Mehrotra as chief executive.
- 2026Collapses Premium and Business into a single Pro plan at $12 per member per month annually covering teams up to 149 members; Coda is retired as a brand and becomes Superhuman Docs.
Integrations
- Gmail, Outlook, and web email clients
- Google Docs
- Microsoft Word
- Slack and Microsoft Teams
- LinkedIn and X
- Salesforce and other web CRMs via the browser extension
- Any macOS or Windows desktop application via the overlay app
- iOS and Android keyboards
Frequently asked questions
10 questionsWhat is Grammarly?
Grammarly is a writing assistant that corrects grammar, spelling, and punctuation, rewrites sentences for clarity, adjusts tone, checks for plagiarism and AI-generated text, and generates text from prompts, all inside whatever application you are already typing in. It works through browser extensions, desktop apps, a Word add-in, and mobile keyboards rather than as a separate content dashboard.
How much does Grammarly cost?
Free is $0 and includes correction, tone detection, and 100 AI prompts a month. Pro is $12 per member per month billed annually, $20 quarterly, or $30 month to month, and covers teams up to 149 members with 2,000 AI prompts per member per month. Enterprise is contact-sales and is the only route to SSO, SCIM, data loss prevention, and audit logs.
Which AI models does Grammarly use, and can I choose one?
You cannot choose, and Grammarly does not publish which model powers which feature. Its own materials describe a blend of proprietary models and third-party large language models without naming versions. In a category where Koala, Lex, and Sudowrite all name their models, this is a genuine transparency gap and it means you cannot reason about why output quality changes.
Is Grammarly better than just paying for ChatGPT or Claude?
For generating text, no. A $20 frontier subscription produces better drafts than Grammarly's prompt feature, and you get to pick the model. What Grammarly does that a chat subscription cannot is correct and revise your writing in place, inside Gmail, Word, Slack, and your phone keyboard, without a copy-and-paste loop. Buy Grammarly for the correction layer and the team consistency features, not for the generation. Many people sensibly pay for both.
Can Grammarly write SEO blog posts?
Not in any meaningful sense. There is no SERP analysis, no keyword research, no content brief, no bulk generation from a keyword list, and no publishing integration with WordPress or Webflow. If your requirement is producing and publishing ranking articles at volume, look at Koala, Byword, BlogSEO, or Article Forge instead. Grammarly is a correctness layer you might run over the result.
Does Grammarly detect AI-generated writing, and should I trust it?
Pro includes an AI-content detector that reports how much of a document reads as machine-generated. Treat the number as directional only. No detector on the market is accurate enough to justify a decision about a person's work, and false positives on human writing are common. Grammarly deserves credit for not also selling a humanizer designed to defeat detectors, which several competitors in this category do.
Does Grammarly own or train on what I write?
Grammarly states that it does not sell user data and provides enterprise-grade privacy and security from the Pro tier upward, with data loss prevention, bring-your-own-key encryption, and Managed Mode reserved for Enterprise. You retain ownership of your text; Grammarly operates on it in place rather than storing your documents as a content library. Anyone rolling it out across a company should still read the data-handling terms, because an overlay that sees every application is a broad permission to grant.
Is Grammarly still called Grammarly?
The product is. The company is not. Grammarly acquired Coda in January 2025 and the email client Superhuman in July 2025, then renamed the parent company Superhuman in October 2025 under Coda co-founder Shishir Mehrotra. Grammarly now sits in a four-product suite alongside Superhuman Docs, Superhuman Mail, and Superhuman Go. Coda has already been retired as a brand, so treat Grammarly's long-term packaging as unsettled.
What do I actually get for $12 that the free plan does not include?
Full-sentence rewriting, tone adjustment, fluency suggestions for non-native English writers, unlimited personalized suggestions, plagiarism and AI detection, 2,000 AI prompts instead of 100, and the whole team layer: roles, permissions, user groups, Knowledge Share, Snippets, and analytics. For a solo writer the honest answer is that full-sentence rewriting and fluency are the upgrade; for a team, Snippets and shared terminology usually justify it on their own.
Does Grammarly work in Microsoft Word and on mobile?
Yes to both. There is a first-class Microsoft Word add-in, desktop apps for macOS and Windows that overlay native applications, extensions for Chrome, Edge, Safari, and Firefox, and iOS and Android keyboards. This breadth of surface coverage is the product's real advantage over every other tool in this category.
Editorial verdict
Grammarly is the only product in this category you buy for where it runs rather than for what it produces. The correction and revision layer is excellent after fifteen years of tuning, the fluency support for non-native English writers solves a real problem cleanly, and the 2026 repackaging put team roles, shared snippets, and brand tones at the $12 individual price instead of behind a business tier. Set against that: generation is the weak half of the product, there is no model transparency and no model picker, and nothing here helps you publish SEO articles. If you already pay $20 for a frontier assistant, Grammarly does not replace it and is not trying to; it complements it by working inside Gmail and Word where the assistant cannot reach. Buy it as a correctness and consistency layer for a team that writes a lot of email, support replies, and client documents. Do not buy it as an AI writer, and keep half an eye on the fact that the company now calls itself Superhuman and has already deleted one of its acquired brand names.
Written by the SaaSTracker editorial team. Awards, when shown, are judged against the published criteria in our methodology.