Grammarly

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

IBM watsonx

Enterprise AI platform with built-in governance, trust, and transparency

Grammarly

Strong

17/25

IBM watsonx

Excellent

24/25

Score Breakdown

DimensionGrammarlyIBM watsonx

Data Residency

Where is your data stored and processed?

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

IBM watsonx: Comprehensive multi-region data hosting across US, EU, Asia Pacific, and support for on-premise deployment. FedRAMP High authorization for US government data. Exceptional data residency flexibility.

2/5

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

5/5

Comprehensive multi-region data hosting across US, EU, Asia Pacific, and support for on-premise deployment. FedRAMP High authorization for US government data. Exceptional data residency flexibility.

Legal Jurisdiction

Which laws govern the company and your data?

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

IBM watsonx: Incorporated in New York, US. FedRAMP authorization and long-standing government contracts demonstrate compliance with stringent US regulatory frameworks. DPA and SCCs available for EU data transfers.

2/5

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

4/5

Incorporated in New York, US. FedRAMP authorization and long-standing government contracts demonstrate compliance with stringent US regulatory frameworks. DPA and SCCs available for EU data transfers.

Data Retention & Training

Is your data used for model training?

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

IBM watsonx: Granular data retention controls with configurable lifecycle management. Comprehensive data processing agreements and audit-ready documentation available for enterprise customers.

4/5

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

5/5

Granular data retention controls with configurable lifecycle management. Comprehensive data processing agreements and audit-ready documentation available for enterprise customers.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

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

IBM watsonx: Industry-leading certification portfolio including FedRAMP High, SOC 2 Type II, ISO 27001/27017/27018, PCI-DSS, CSA STAR, and HIPAA. Among the most comprehensively certified AI platforms available.

5/5

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

5/5

Industry-leading certification portfolio including FedRAMP High, SOC 2 Type II, ISO 27001/27017/27018, PCI-DSS, CSA STAR, and HIPAA. Among the most comprehensively certified AI platforms available.

Regulatory Fit

Suitability for regulated industries and professional services

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

IBM watsonx: Exceptional regulatory fit across all major regulated industries. Dedicated watsonx.governance toolkit aligns with EU AI Act requirements, NIST AI RMF, and sector-specific financial and healthcare regulations.

4/5

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

5/5

Exceptional regulatory fit across all major regulated industries. Dedicated watsonx.governance toolkit aligns with EU AI Act requirements, NIST AI RMF, and sector-specific financial and healthcare regulations.

Total Score

17/25

24/25

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.

IBM watsonx

Best for organisations requiring broad certification coverage (SOC 2 Type II, SOC 3, ISO 27001); regulated industries (FedRAMP, BaFin); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment.

Detailed Comparison

Grammarly vs IBM watsonx: 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. IBM watsonx (IBM, US) scores 24/25 with a Gold (Excellent) trust badge. Enterprise AI platform with built-in governance, trust, and transparency.

Dimension-by-Dimension Breakdown

#### Data Residency

IBM watsonx leads with 5/5 vs 2/5.

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

●IBM watsonx (5/5): Comprehensive multi-region data hosting across US, EU, Asia Pacific, and support for on-premise deployment. FedRAMP High authorization for US government data. Exceptional data residency flexibility.

#### Legal Jurisdiction

IBM watsonx leads with 4/5 vs 2/5.

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

●IBM watsonx (4/5): Incorporated in New York, US. FedRAMP authorization and long-standing government contracts demonstrate compliance with stringent US regulatory frameworks. DPA and SCCs available for EU data transfers.

#### Data Retention & Training

IBM watsonx leads with 5/5 vs 4/5.

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

●IBM watsonx (5/5): Granular data retention controls with configurable lifecycle management. Comprehensive data processing agreements and audit-ready documentation available for enterprise customers.

#### Certifications

Both score equally at 5/5.

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

●IBM watsonx (5/5): Industry-leading certification portfolio including FedRAMP High, SOC 2 Type II, ISO 27001/27017/27018, PCI-DSS, CSA STAR, and HIPAA. Among the most comprehensively certified AI platforms available.

#### Regulatory Fit

IBM watsonx leads with 5/5 vs 4/5.

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

●IBM watsonx (5/5): Exceptional regulatory fit across all major regulated industries. Dedicated watsonx.governance toolkit aligns with EU AI Act requirements, NIST AI RMF, and sector-specific financial and healthcare regulations.

Certifications at a Glance

Certification	Grammarly	IBM watsonx
CSA STAR	No	Yes
FedRAMP High	No	Yes
ISO 27001	Yes	Yes
ISO 27017	No	Yes
ISO 27018	Yes	Yes
ISO 27701	Yes	No
ISO 42001	Yes	No
PCI-DSS	No	Yes
SOC 2 Type II	Yes	Yes
SOC 3	No	Yes

Overall Verdict

IBM watsonx has a clear trust advantage, scoring 24/25 compared to Grammarly's 17/25. IBM watsonx particularly excels in data residency, legal jurisdiction, data retention & training, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Grammarly or IBM watsonx?

Grammarly has a TrustKit score of 17/25 while IBM watsonx scores 24/25. IBM watsonx currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Grammarly and IBM watsonx 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 IBM watsonx scores 5/5 (Comprehensive multi-region data hosting across US, EU, Asia Pacific, and support for on-premise deployment. FedRAMP High authorization for US government data. Exceptional data residency flexibility.).

Are Grammarly and IBM watsonx GDPR compliant?

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

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