Lexis+ AI

Hallucination-free AI legal research with authoritative LexisNexis sources

ASReview

Open-source AI-powered systematic review tool for academic researchers

Lexis+ AI

Strong

21/25

ASReview

Strong

21/25

Score Breakdown

DimensionLexis+ AIASReview

Data Residency

Where is your data stored and processed?

Lexis+ AI: Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.

ASReview: Fully local application with no cloud dependency. All data stays on the researcher's machine. Dutch university origin ensures EU-aligned development practices.

4/5

Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.

5/5

Fully local application with no cloud dependency. All data stays on the researcher's machine. Dutch university origin ensures EU-aligned development practices.

Legal Jurisdiction

Which laws govern the company and your data?

Lexis+ AI: Parent company RELX PLC is UK/EU incorporated and regulated. LexisNexis US entity is incorporated in Delaware but operates under RELX's broader European governance framework, providing strong data protection oversight.

ASReview: Dutch public university (Utrecht University) under full EU/GDPR jurisdiction. Strongest possible EU legal framework. Not subject to US CLOUD Act.

4/5

Parent company RELX PLC is UK/EU incorporated and regulated. LexisNexis US entity is incorporated in Delaware but operates under RELX's broader European governance framework, providing strong data protection oversight.

5/5

Dutch public university (Utrecht University) under full EU/GDPR jurisdiction. Strongest possible EU legal framework. Not subject to US CLOUD Act.

Data Retention & Training

Is your data used for model training?

Lexis+ AI: Clear data retention policies aligned with legal professional requirements. Research queries and documents are not retained for AI training. Supports data processing agreements for enterprise law firms.

ASReview: No cloud component. All data stored locally on the user's device. Complete user control over data retention and deletion. No external data transmission.

4/5

Clear data retention policies aligned with legal professional requirements. Research queries and documents are not retained for AI training. Supports data processing agreements for enterprise law firms.

5/5

No cloud component. All data stored locally on the user's device. Complete user control over data retention and deletion. No external data transmission.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Lexis+ AI: Holds SOC 2 Type II, ISO 27001, and ISO 27701 certifications. Strong certification portfolio appropriate for a platform handling confidential legal information.

ASReview: Academic open-source project without commercial security certifications. Source code publicly auditable. University maintains institutional security standards.

4/5

Holds SOC 2 Type II, ISO 27001, and ISO 27701 certifications. Strong certification portfolio appropriate for a platform handling confidential legal information.

2/5

Academic open-source project without commercial security certifications. Source code publicly auditable. University maintains institutional security standards.

Regulatory Fit

Suitability for regulated industries and professional services

Lexis+ AI: Excellent regulatory fit for law firms and legal departments. Compliance with bar association professional responsibility rules, GDPR, UK GDPR, and CCPA. Trusted by government agencies and Am Law 100 firms.

ASReview: Excellent fit for regulated research environments. Local-only processing eliminates data transfer concerns. Used by healthcare researchers and institutions with strict data governance requirements.

5/5

Excellent regulatory fit for law firms and legal departments. Compliance with bar association professional responsibility rules, GDPR, UK GDPR, and CCPA. Trusted by government agencies and Am Law 100 firms.

4/5

Excellent fit for regulated research environments. Local-only processing eliminates data transfer concerns. Used by healthcare researchers and institutions with strict data governance requirements.

Total Score

21/25

Best For

Lexis+ AI

Best for EU-headquartered organisations needing maximum data sovereignty; regulated industries (Dutch DPA (Autoriteit Persoonsgegevens)); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment; teams on a tight budget.

ASReview

Best for EU-headquartered organisations needing maximum data sovereignty; organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, ISO 27701); regulated industries (FCA, SRA); privacy-conscious teams who need strong data retention controls; enterprises requiring SSO integration.

Detailed Comparison

ASReview vs Lexis+ AI: Trust & Compliance Comparison

ASReview (ASReview, NL) scores 21/25 overall with a Silver (Strong) trust badge. Open-source AI-powered systematic review tool for academic researchers. Lexis+ AI (LexisNexis, GB) scores 21/25 with a Silver (Strong) trust badge. Hallucination-free AI legal research with authoritative LexisNexis sources.

Dimension-by-Dimension Breakdown

#### Data Residency

ASReview leads with 5/5 vs 4/5.

●ASReview (5/5): Fully local application with no cloud dependency. All data stays on the researcher's machine. Dutch university origin ensures EU-aligned development practices.

●Lexis+ AI (4/5): Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.

#### Legal Jurisdiction

ASReview leads with 5/5 vs 4/5.

●ASReview (5/5): Dutch public university (Utrecht University) under full EU/GDPR jurisdiction. Strongest possible EU legal framework. Not subject to US CLOUD Act.

●Lexis+ AI (4/5): Parent company RELX PLC is UK/EU incorporated and regulated. LexisNexis US entity is incorporated in Delaware but operates under RELX's broader European governance framework, providing strong data protection oversight.

#### Data Retention & Training

ASReview leads with 5/5 vs 4/5.

●ASReview (5/5): No cloud component. All data stored locally on the user's device. Complete user control over data retention and deletion. No external data transmission.

●Lexis+ AI (4/5): Clear data retention policies aligned with legal professional requirements. Research queries and documents are not retained for AI training. Supports data processing agreements for enterprise law firms.

#### Certifications

Lexis+ AI leads with 4/5 vs 2/5.

●ASReview (2/5): Academic open-source project without commercial security certifications. Source code publicly auditable. University maintains institutional security standards.

●Lexis+ AI (4/5): Holds SOC 2 Type II, ISO 27001, and ISO 27701 certifications. Strong certification portfolio appropriate for a platform handling confidential legal information.

#### Regulatory Fit

Lexis+ AI leads with 5/5 vs 4/5.

●ASReview (4/5): Excellent fit for regulated research environments. Local-only processing eliminates data transfer concerns. Used by healthcare researchers and institutions with strict data governance requirements.

●Lexis+ AI (5/5): Excellent regulatory fit for law firms and legal departments. Compliance with bar association professional responsibility rules, GDPR, UK GDPR, and CCPA. Trusted by government agencies and Am Law 100 firms.

Certifications at a Glance

Certification	ASReview	Lexis+ AI
ISO 27001	No	Yes
ISO 27701	No	Yes
SOC 2 Type II	No	Yes

Overall Verdict

ASReview and Lexis+ AI are closely matched on trust and compliance, with scores of 21/25 and 21/25 respectively. The right choice depends on your specific regulatory requirements and existing technology stack.

Frequently Asked Questions

Which is better for EU compliance, Lexis+ AI or ASReview?

Lexis+ AI has a TrustKit score of 21/25 while ASReview scores 21/25. Both tools are currently rated equally across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Lexis+ AI and ASReview compare on data residency?

Lexis+ AI scores 4/5 for data residency (Data hosted across US, EU, and UK data centres. Strong data residency options for law firms in major common law and civil law jurisdictions. UK GDPR compliance post-Brexit.), while ASReview scores 5/5 (Fully local application with no cloud dependency. All data stays on the researcher's machine. Dutch university origin ensures EU-aligned development practices.).

Are Lexis+ AI and ASReview GDPR compliant?

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

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