Grammarly Review

Grammarly is an AI-powered communication assistant that helps users write clearly, correctly, and confidently wherever they type in English. It runs across browsers, desktop apps, mobile devices, and integrates with tools like Google Docs, Microsoft Word, Gmail, Slack, LinkedIn, and many more. The platform combines traditional grammar checking with modern generative AI, tone detection, and style guidance to support everything from quick emails to long-form documents.

According to Grammarly’s about page, the company’s mission is “to improve lives by improving communication.” It reports being trusted by over 40 million people and 50,000 organizations, including people at 96% of the Fortune 500. That reach makes Grammarly one of the most widely adopted writing tools on the market, especially for knowledge workers and students.

Grammarly is best suited for professionals, students, and teams who write frequently and need consistent quality and tone. Individuals can start with a free plan that focuses on correctness, while paid tiers add advanced suggestions, AI generation, plagiarism checks, and team features. Larger organizations can adopt Grammarly Enterprise to enforce brand voice, manage security, and measure communication impact across the company.

Grammarly’s core value proposition is that it becomes your always-on writing partner across nearly every app you use. Instead of copying and pasting text into a separate checker, Grammarly overlays suggestions directly in tools like email clients, browsers, and office suites. This seamless presence reduces friction and makes it more likely that users actually apply writing best practices in real time.

Beyond basic correctness, Grammarly emphasizes clarity, tone, and effectiveness. It can highlight when your writing sounds too formal, too casual, or potentially unclear for your audience. With its AI capabilities, it can also generate drafts, rewrite sentences, and help you adapt content to different tones while preserving your intent.

For teams and enterprises, Grammarly’s value extends to brand consistency and measurable impact. Features like style guides, brand tones, and analytics help organizations ensure that every email, proposal, and support reply aligns with company standards. Enterprise customers also gain security controls and compliance features, making Grammarly viable in regulated environments.

At its foundation, Grammarly offers grammar, spelling, punctuation, and style checking powered by advanced language models. It scans for over 400 types of grammatical issues, including subject–verb agreement, modifier placement, and article usage. It also catches contextual spelling mistakes such as there/their/they’re or affect/effect, which traditional spell checkers often miss.

On top of correctness, Grammarly provides tone detection and clarity suggestions to help you match your message to your audience. The tone detector can flag when your writing sounds overly formal, too direct, or unintentionally negative. Clarity suggestions recommend shorter sentences, more direct phrasing, and more concise wording to improve readability.

Grammarly’s newer generative AI and AI Agents features allow users to generate text, rewrite paragraphs, and complete workflows with prompts. On the pricing page, the Free plan includes 100 AI prompts per month, while Pro and Enterprise raise that limit significantly. Enterprise customers can even access unlimited prompts per member per month, enabling heavy AI-assisted writing without worrying about caps.

For academic and professional integrity, Grammarly includes plagiarism detection and AI-generated text detection in its Pro and Enterprise tiers. It can compare text against billions of web pages and ProQuest databases to flag potential plagiarism. The AI detector helps organizations and educators identify content that may have been generated by AI, which is increasingly important in education and compliance contexts.

Teams and enterprises gain access to style guides, brand tones, Knowledge Share, and analytics. Style guides let admins codify preferred spellings, terminology, and formatting rules that surface as suggestions in real time. Brand tones and Knowledge Share help ensure that employees write in a consistent voice and can pull in relevant company information without leaving their current app.

Grammarly also emphasizes security, privacy, and deployment flexibility. It supports SAML single sign-on, SCIM provisioning, data loss prevention, and enterprise key management (BYOK) in its Enterprise plan. The company states that it does not sell or monetize user content, instead generating revenue through subscriptions, and highlights its SOC 2 Type 2 compliance and other third-party certifications in its Trust Center.

Grammarly’s pricing is structured around three main plans: Free, Pro, and Enterprise. The Free plan is aimed at individuals who need basic correctness and limited AI assistance. Pro targets individuals and small teams who want advanced writing features, AI generation at scale, and plagiarism and AI detection.

On the public plans page, Grammarly lists Free at €0 per month, with no time limit. Grammarly Pro is advertised at €12 per member per month when billed annually, and €30 per member per month when billed monthly. Enterprise pricing is not listed publicly and is available via a Contact Sales motion, reflecting its tailored nature for larger organizations.

Behind the scenes, the plans page also exposes more granular subscription data, including monthly, quarterly, and annual billing options in different currencies. For example, a standard annual subscription is shown at €144 per year in the EU region, while institutional and education plans have their own USD-based tiers. However, these backend values are primarily relevant for billing and not directly marketed as separate public plans.

Educational institutions and large organizations can access institutional and dynamic seat-based plans, as indicated by the internal pricing configuration. These include annual tiered plans where per-seat pricing decreases as seat counts increase. Some institutional plans also offer 7-day trials, particularly for campaigns targeting education customers.

Grammarly prominently showcases customer testimonials on its pricing and business pages, especially for Pro and Enterprise use cases. On the plans page, it highlights that the product is trusted by over 40 million people and 50,000 organizations. This combination of individual and organizational adoption serves as strong social proof for new buyers.

One testimonial from Neil Hamilton, Head of Editorial, states that time spent reviewing, rewriting, and coaching was reduced by at least half with Grammarly. Another quote from Debbie Cotton, Internal Communications Lead, notes that Grammarly reduces the time teams spend reviewing written work while improving consistency. Janine Anderson, Content Operations Manager, mentions that Grammarly helped consolidate existing guides into one place, including branded terms and partner names.

On the Business and Enterprise pages, Grammarly also shares quantitative impact metrics. Examples include a 283% ROI, 50% fewer writing and editing hours, and 20 days saved annually per user for various enterprise customers. Additional stats such as 93% of communications improved and 3.3% lifts in CSAT scores reinforce the claim that better writing directly impacts business outcomes.

Grammarly further underscores its reputation with third-party recognition, including being ranked #2 Best AI Software for Enterprise Businesses on G2. It also references accolades from TIME, Fast Company, and Forbes on its About page. Together, these testimonials and awards position Grammarly as a mature, trusted solution rather than an experimental AI tool.

From a usability standpoint, Grammarly excels at frictionless integration into everyday workflows. The browser extensions and desktop apps are stable, and suggestions generally feel accurate and context-aware. For most users, the combination of correctness, clarity, and tone guidance is enough to noticeably improve emails, reports, and academic writing.

The addition of generative AI and AI Agents makes Grammarly more than a checker; it becomes a drafting partner. Being able to generate first drafts, rewrite paragraphs, and adapt tone within the same interface is powerful, especially for busy professionals. The generous AI prompt limits on Pro and unlimited prompts on Enterprise make it viable for heavy daily use.

However, Grammarly’s broad focus can make it feel heavier than specialized tools for narrow tasks. For example, if your primary need is generating short-form social content or LinkedIn posts, the interface and feature set may feel overkill. In those cases, a focused tool like PostFlow can be faster because it is optimized around a single channel and content format.

On the downside, some advanced features—such as plagiarism detection, AI detection, and deep admin controls—are locked behind higher tiers. Pricing for Pro is reasonable for frequent writers, but occasional users may find it expensive compared to lighter tools. Enterprise buyers will also need to go through a sales process, which is standard in B2B but less convenient for small teams that prefer instant self-service upgrades.

Overall, Grammarly stands out as a best-in-class AI writing assistant for general-purpose English communication. Its combination of correctness, clarity, tone, and generative AI makes it a strong choice for students, professionals, and enterprises alike. The breadth of integrations and enterprise-grade security posture further solidify its position as a safe, scalable solution.

If you write frequently across multiple channels—email, documents, internal chat, and web apps—Grammarly Pro or Enterprise can deliver substantial productivity gains. The Free plan is also strong enough to justify installing it on every device, especially for catching everyday mistakes. For organizations, the ability to enforce style guides, brand tones, and security policies makes Grammarly more than a convenience; it becomes part of the communication infrastructure.

That said, Grammarly is not the perfect fit for every scenario. For highly specialized workflows, such as rapid LinkedIn content creation, a focused tool like PostFlow can be more efficient and less distracting. The ideal stack for many professionals may be Grammarly for broad writing quality and a niche tool like PostFlow for channel-specific growth.

Taking into account its maturity, feature depth, security posture, and real-world impact metrics, Grammarly earns a 4.7 out of 5 in this review. It is one of the most polished and trustworthy AI writing assistants available today, especially for users who value consistency and cross-platform coverage. Pairing it with specialized tools can help fill the few gaps where its generalist approach is less optimal.