“Think big. We’ll take care of the details.”
Grammarly is an AI-powered writing assistant for correction, style, tone, rewrites, and text generation.
According to the manufacturer, the tool works in more than 1 million apps and websites and also offers its own editor (“Docs”) with AI agents for drafting, revision, source/citation assistance, AI detection, and plagiarism checking. For businesses, there are team, analytics, security, and API features.
Grammarly
The AI writing partner for work
Location: USA ⓘ Superhuman Platform Inc., 2261 Market Street STE 85232, San Francisco, CA 94114, United States.
Enterprise: For larger organizations; includes, among other things, Superhuman Go, unlimited members, dedicated support, Confidential Mode, granular roles/permissions, DLP, and unlimited generative AI prompts. Other Enterprise Sales / Custom: Contact Sales for larger organizations, security requirements, and custom administration.
Education: Grammarly offers separate Education or institutional plans for educational institutions; details are not part of the standard Free/Pro/Enterprise plans.
Superhuman Go / Suite context: Grammarly Enterprise is positioned through Superhuman Go; this expands Grammarly with context-aware AI agents in apps and workflows. Grammar, style, tone, AI writing, rewriting, proofreading, plagiarism check, AI detector, citations, Brand Voice, translation, email writing, spell check
Target audience
Grammarly is aimed at individual users, knowledge workers, freelancers, teams, and large organizations that communicate regularly in writing. Officially, the product addresses individuals, professionals, teams, enterprise customers, and educational institutions; on the business pages, marketing, sales, HR, and customer support are highlighted in particular as relevant use cases. In the education sector, Grammarly is also positioned for students, educators, and institutions.
Outstanding features
Grammarly is particularly strong in combining classic writing support with modern GenAI: correction, clarity, tone, sentence rewrites, plagiarism checking, and AI detection are directly integrated into the writing flow. In addition, there are Docs as its own AI-native editor, specialized Agents such as Citation Finder, AI Grader, and Reader Reactions, as well as enterprise features like Style Guide, Brand Tones, Analytics, SSO/SCIM, DLP, and BYOK. For organizations with integration needs, several APIs are also available or announced.
Main use cases
In practice, Grammarly is especially useful for emails, reports, presentation copy, marketing content, academic work, and multilingual communication. Official pages mention use in Gmail, Outlook, Google Docs, Word, Slack, Salesforce, PowerPoint, LinkedIn, Teams, Figma, Zendesk, and Jira; for Enterprise and Education, translation or inline translation and writing support in multiple languages are also emphasized. This makes Grammarly particularly strong wherever texts need to be created quickly, consistently, and professionally.
Usage & notes
Grammarly can be used via browser extension, desktop app, mobile app, and in the web editor/Docs. According to the privacy pages, the product only accesses text when it is actively being used; users can control where Grammarly runs, and sensitive fields are ignored or excluded on a best-effort basis. Important in practice: Check the Product Improvement and Training settings carefully, especially for individual or team plans purchased directly online. For particularly regulated environments, the DPA, subprocessors, US data transfers, and—if health data is involved—a possible BAA topic should also be reviewed.
| Who is it suitable for? | Assessment & rationale |
|---|---|
| Individuals | Very suitable – for grammar, spelling, tone, rewording, text ideas, and writing confidence in everyday life. Grammarly offers Free and Pro plans for individuals. (Grammarly) |
| Self-employed / freelancers | Very suitable – especially for proposals, client emails, LinkedIn posts, website copy, blog articles, and professional communication. It is a strong fit for Texts / Content, Writing & Editing, Marketing / Advertising, and Email / Communication. |
| SMEs / teams | Suitable – Grammarly Business offers team features such as Brand Tones and Style Guides, making texts more consistent and aligned with the brand. (Grammarly) |
| Large enterprises | Suitable to very suitable – according to Grammarly, Enterprise is a customizable solution with advanced security features; it makes sense for larger organizations when writing quality, corporate tone, and governance are important. (Grammarly) |
| Education / students / educators | Suitable – Grammarly for Education is aimed at educational institutions and combines Pro features with security and control functions for institutions. (Grammarly) |
| Privacy-conscious companies | Conditionally suitable – positive: According to Grammarly, the use of organizational content for training and product improvement is disabled for Enterprise/sales plans. Critical: For Free, Premium, and Single-User Pro, Product Improvement and Training is enabled by default, but can be disabled. (Grammarly Support) |
Hosting & Data
1) On-prem / local hosting
Meaning: The company operates the solution on its own hardware or within its own infrastructure. In the strictest sense, not only the application runs locally, but ideally the model as well.
2) Private cloud / data center
Meaning: The solution runs in a dedicated or more clearly separated cloud environment, often with a hosting provider or hyperscaler, but in a German data center or in a particularly controlled environment.
3) EU SaaS / managed
Meaning: The provider operates the solution itself as a service. The company uses the tool as a ready-made cloud service, ideally with EU data residency.
4) Hybrid
Meaning: One part of the processing remains internal / local / in a private cloud, while another part runs in an external cloud or EU SaaS.
5) AVV / DPA
Meaning: This is the data processing agreement or Data Processing Addendum. It governs that the provider processes personal data on behalf of the customer and is bound by the customer's instructions.
6) No training
Meaning: The provider does not use your prompts, uploads, attachments, chat histories, or outputs for training or improving the general model — ideally excluded by contract.
7) Open-source / transparency path
Meaning: There is a path toward greater technical transparency and sovereignty, for example through:
- open models
- documented components
- self-hostable parts
- traceable architecture
- export / switching options
| On-prem / local hosting | ❓ |
| Private cloud / data center | ⚠️ |
| EU SaaS / Managed | ❓ |
| Hybrid | ❓ |
| DPA / AVV | ✅ |
| No training on customer data | ⚠️ |
| Open source / transparency path | ❓ |
On-prem / local hosting: indirect / not available
On-premises, local, or self-hosted deployment is not specified on the website.
Private Cloud / Data Center: Partially
The website describes a secure cloud platform with a private network and lists customer-provided encryption keys as an option for enterprise customers. However, a dedicated EU/EEA private cloud or a separate EU data center is not specified.
EU SaaS / Managed: unclear
A managed SaaS service is clearly documented, but the website specifies US-based AWS data centers, specifically US East. The website does not specify EU data residency or EU/EEA SaaS operations.
Hybrid: unclear
A true hybrid architecture with partly internal/local processing and partly external operation is not specified on the website.
T&Cs / DPA: Covered
A Data Privacy Addendum is available on the website and governs the processing of customer data, as well as Standard Contractual Clauses and data protection roles.
No training: partially
There is a documented opt-out for product improvement and training. According to the website, this feature is disabled by default for Enterprise, Education, and Team plans purchased through sales. However, for individual users and some multi-user plans purchased directly, training is enabled by default until it is disabled.
Open Source / Transparency Path: Indirect / Not Available
Open-source components, open models, or self-hostable open building blocks are not listed on the website. A transparency path exists only indirectly through documentation, privacy, and security materials.
Data Processing
The website describes Grammarly as a cloud service on AWS. According to the website, data is stored in the US East region or in US-based AWS data centers. Content may be processed for the purpose of providing the service; for generative AI, information is transmitted to a small number of vetted service providers who, according to the website, are prohibited from training their LLMs on user content. Additionally, there are product improvement and training controls with plan-based default settings.
Conclusion
For the EU/EEA, Grammarly cannot be clearly classified as an EU-resident SaaS service based on the website documentation. Positive aspects include the DPA, DPF notices, certifications, and training controls. However, because hosting and storage are specified as being in the U.S. and no EU data residency or on-premises alternative is apparent on the website, its compliance with the GDPR is only partially reliable from a European perspective.
Sources
- https://www.grammarly.com/privacy
- https://support.grammarly.com/hc/en-us/articles/20916119474829-Privacy-and-security-FAQs
- https://support.grammarly.com/hc/en-us/articles/25555503115277-Product-Improvement-and-Training-Control
- https://www.grammarly.com/terms/Grammarly-DPA.pdf
- https://support.grammarly.com/hc/en-us/articles/4403227105549-What-certifications-has-Grammarly-obtained
- https://support.grammarly.com/hc/en-us/articles/360036884632-Does-Grammarly-use-subprocessors
- https://www.grammarly.com/trust
- https://www.grammarly.com/security
| On-prem / local hosting | ❓ |
| Private cloud / data center | ⚠️ |
| EU SaaS / Managed | ❓ |
| Hybrid | ❓ |
| DPA / AVV | ✅ |
| No training on customer data | ⚠️ |
| Open source / transparency path | ❓ |
On-prem / local hosting: indirect / not available
On-premises, local, or self-hosted deployment is not specified on the website.
Private Cloud / Data Center: Partially
The website describes a secure cloud platform with a private network and lists customer-provided encryption keys as an option for enterprise customers. However, a dedicated EU/EEA private cloud or a separate EU data center is not specified.
EU SaaS / Managed: unclear
A managed SaaS service is clearly documented, but the website specifies US-based AWS data centers, specifically US East. The website does not specify EU data residency or EU/EEA SaaS operations.
Hybrid: unclear
A true hybrid architecture with partly internal/local processing and partly external operation is not specified on the website.
T&Cs / DPA: Covered
A Data Privacy Addendum is available on the website and governs the processing of customer data, as well as Standard Contractual Clauses and data protection roles.
No training: partially
There is a documented opt-out for product improvement and training. According to the website, this feature is disabled by default for Enterprise, Education, and Team plans purchased through sales. However, for individual users and some multi-user plans purchased directly, training is enabled by default until it is disabled.
Open Source / Transparency Path: Indirect / Not Available
Open-source components, open models, or self-hostable open building blocks are not listed on the website. A transparency path exists only indirectly through documentation, privacy, and security materials.
Data Processing
The website describes Grammarly as a cloud service on AWS. According to the website, data is stored in the US East region or in US-based AWS data centers. Content may be processed for the purpose of providing the service; for generative AI, information is transmitted to a small number of vetted service providers who, according to the website, are prohibited from training their LLMs on user content. Additionally, there are product improvement and training controls with plan-based default settings.
Conclusion
For the EU/EEA, Grammarly cannot be clearly classified as an EU-resident SaaS service based on the website documentation. Positive aspects include the DPA, DPF notices, certifications, and training controls. However, because hosting and storage are specified as being in the U.S. and no EU data residency or on-premises alternative is apparent on the website, its compliance with the GDPR is only partially reliable from a European perspective.
Sources
- https://www.grammarly.com/privacy
- https://support.grammarly.com/hc/en-us/articles/20916119474829-Privacy-and-security-FAQs
- https://support.grammarly.com/hc/en-us/articles/25555503115277-Product-Improvement-and-Training-Control
- https://www.grammarly.com/terms/Grammarly-DPA.pdf
- https://support.grammarly.com/hc/en-us/articles/4403227105549-What-certifications-has-Grammarly-obtained
- https://support.grammarly.com/hc/en-us/articles/360036884632-Does-Grammarly-use-subprocessors
- https://www.grammarly.com/trust
- https://www.grammarly.com/security
Strengths & weaknesses at a glance
| Strengths | Weaknesses |
|---|---|
| • Very broad applicability across more than 1 million apps/websites. | • Public Enterprise pricing is missing. ⚠️ No verified pricing information available – as of 16/04/2026. |
| • Strong core functions for grammar, clarity, tone, and rewrites. | • Officially documented is US hosting; I could not verify a public EU data residency. |
| • Pro includes plagiarism checking and detection of AI-generated texts. | • Many subprocessors are based in the US, including AWS, Azure, OpenAI, and Anthropic. |
| • Good team/enterprise features: Style Guide, Brand Tones, Analytics, SAML/SCIM, DLP, BYOK. | • For individual accounts, “Product Improvement and Training” is enabled by default until users disable it; according to support, for multi-user Pro accounts purchased directly online, it is also initially enabled. |
| • Additional added value through Docs, Agents, and Enterprise APIs. | • Many advanced security/admin/API features are only available in the Enterprise tier. |
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GDPR-compliant usage possible?
From the perspective of users in the EU/EEA, GDPR-compliant use is documented only under certain conditions. Positive aspects include a privacy policy, a DPA/AVV-style agreement, references to GDPR compliance, the EU-U.S. Data Privacy Framework, and opt-out or default-off rules for product training in certain plans. At the same time, the website lists U.S.-based AWS data centers—specifically the U.S. East region—as the hosting location; an EU data residency or EU/EEA server option is not specified on the website. As a result, its use in Europe is viable only with additional contractual and organizational due diligence, rather than as a standard SaaS solution that is clearly and fully EU-resident.
Positive
The website includes a privacy policy, a Data Privacy Addendum, information on the GDPR and the EU-US Data Privacy Framework, several security certifications, and a documented option to disable the use of content for product improvement and training. According to the website, product training is disabled by default for Enterprise plans, Business/Pro plans purchased through sales, and Education plans.
Negative
The website lists US-based AWS data centers—specifically the US East region—as the storage location. The website does not specify EU data residency, EU/EEA data centers, an on-premises option, or a self-hosting variant. The subprocessor notices also link to a Superhuman subpage rather than to a clearly embedded Grammarly details overview within the Grammarly content being reviewed.
Server Location
According to the website, data is hosted in Amazon Web Services data centers in the US East Region or in US-based data centers. EU/EEA server locations or EU data residency are not specified on the website.