Grammarly

AI writing assistant for grammar, style, clarity, and generative content creation

Notion AI

AI-powered workspace for notes, wikis, projects, and content generation

Grammarly

Strong

17/25

Notion AI

Strong

20/25

Score Breakdown

DimensionGrammarlyNotion AI

Data Residency

Where is your data stored and processed?

Grammarly: Data hosted exclusively in US AWS East; no EU or regional residency option

Notion AI: EU data residency available for Enterprise customers; US hosting for lower tiers

2/5

Data hosted exclusively in US AWS East; no EU or regional residency option

4/5

EU data residency available for Enterprise customers; US hosting for lower tiers

Legal Jurisdiction

Which laws govern the company and your data?

Grammarly: US Delaware corporation subject to CLOUD Act; GDPR compliance via SCCs and DPA

Notion AI: US Delaware corporation; EU residency option reduces CLOUD Act exposure for Enterprise

2/5

US Delaware corporation subject to CLOUD Act; GDPR compliance via SCCs and DPA

3/5

US Delaware corporation; EU residency option reduces CLOUD Act exposure for Enterprise

Data Retention & Training

Is your data used for model training?

Grammarly: User data not sold; limited processing for product improvement with user controls

Notion AI: Customer data not used to train AI models; data retained per workspace settings

4/5

User data not sold; limited processing for product improvement with user controls

4/5

Customer data not used to train AI models; data retained per workspace settings

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Grammarly: Extensive certification: SOC 2 Type II, ISO 27001/18/701, ISO 42001

Notion AI: SOC 2 Type II, ISO 27001/17/18/701 all certified; AI included in scope

5/5

Extensive certification: SOC 2 Type II, ISO 27001/18/701, ISO 42001

5/5

SOC 2 Type II, ISO 27001/17/18/701 all certified; AI included in scope

Regulatory Fit

Suitability for regulated industries and professional services

Grammarly: Strong enterprise compliance posture; US-only hosting limits suitability for EU data residency mandates

Notion AI: Strong fit for EU organisations on Enterprise plan with data residency; good overall compliance posture

4/5

Strong enterprise compliance posture; US-only hosting limits suitability for EU data residency mandates

4/5

Strong fit for EU organisations on Enterprise plan with data residency; good overall compliance posture

Total Score

17/25

20/25

Best For

Grammarly

Best for organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, ISO 27018); privacy-conscious teams who need strong data retention controls; teams on a tight budget.

Notion AI

Best for organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, ISO 27017); regulated industries (ICO); privacy-conscious teams who need strong data retention controls; teams on a tight budget.

Detailed Comparison

Grammarly vs Notion AI: Trust & Compliance Comparison

Grammarly (Grammarly, Inc., US) scores 17/25 overall with a Silver (Strong) trust badge. AI writing assistant for grammar, style, clarity, and generative content creation. Notion AI (Notion Labs, Inc., US) scores 20/25 with a Silver (Strong) trust badge. AI-powered workspace for notes, wikis, projects, and content generation.

Dimension-by-Dimension Breakdown

#### Data Residency

Notion AI leads with 4/5 vs 2/5.

●Grammarly (2/5): Data hosted exclusively in US AWS East; no EU or regional residency option

●Notion AI (4/5): EU data residency available for Enterprise customers; US hosting for lower tiers

#### Legal Jurisdiction

Notion AI leads with 3/5 vs 2/5.

●Grammarly (2/5): US Delaware corporation subject to CLOUD Act; GDPR compliance via SCCs and DPA

●Notion AI (3/5): US Delaware corporation; EU residency option reduces CLOUD Act exposure for Enterprise

#### Data Retention & Training

Both score equally at 4/5.

●Grammarly (4/5): User data not sold; limited processing for product improvement with user controls

●Notion AI (4/5): Customer data not used to train AI models; data retained per workspace settings

#### Certifications

Both score equally at 5/5.

●Grammarly (5/5): Extensive certification: SOC 2 Type II, ISO 27001/18/701, ISO 42001

●Notion AI (5/5): SOC 2 Type II, ISO 27001/17/18/701 all certified; AI included in scope

#### Regulatory Fit

Both score equally at 4/5.

●Grammarly (4/5): Strong enterprise compliance posture; US-only hosting limits suitability for EU data residency mandates

●Notion AI (4/5): Strong fit for EU organisations on Enterprise plan with data residency; good overall compliance posture

Certifications at a Glance

Certification	Grammarly	Notion AI
ISO 27001	Yes	Yes
ISO 27017	No	Yes
ISO 27018	Yes	Yes
ISO 27701	Yes	Yes
ISO 42001	Yes	No
SOC 2 Type II	Yes	Yes

Overall Verdict

Notion AI has a clear trust advantage, scoring 20/25 compared to Grammarly's 17/25. Notion AI particularly excels in data residency, legal jurisdiction.

Frequently Asked Questions

Which is better for EU compliance, Grammarly or Notion AI?

Grammarly has a TrustKit score of 17/25 while Notion AI scores 20/25. Notion AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Grammarly and Notion AI compare on data residency?

Grammarly scores 2/5 for data residency (Data hosted exclusively in US AWS East; no EU or regional residency option), while Notion AI scores 4/5 (EU data residency available for Enterprise customers; US hosting for lower tiers).

Are Grammarly and Notion AI GDPR compliant?

Both tools are assessed across five compliance dimensions. Grammarly has a regulatory fit score of 4/5 and Notion AI scores 4/5. Check the full comparison above for a detailed breakdown.

Explore Each Tool