Glean

Enterprise AI search that connects and searches all company knowledge with strict access controls

Lexis+ AI

Hallucination-free AI legal research with authoritative LexisNexis sources

Glean

Moderate

16/25

Lexis+ AI

Strong

21/25

Score Breakdown

DimensionGleanLexis+ AI

Data Residency

Where is your data stored and processed?

Glean: AWS-hosted with US and EU options; data residency configurations available for regulated industries on request; permission-enforcement architecture prevents cross-tenant data exposure

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.

3/5

AWS-hosted with US and EU options; data residency configurations available for regulated industries on request; permission-enforcement architecture prevents cross-tenant data exposure

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

Which laws govern the company and your data?

Glean: US Delaware corporation subject to US jurisdiction and CLOUD Act; DPAs available for GDPR; Capital One Ventures as investor may raise considerations for some financial services organisations

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.

2/5

US Delaware corporation subject to US jurisdiction and CLOUD Act; DPAs available for GDPR; Capital One Ventures as investor may raise considerations for some financial services organisations

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

Is your data used for model training?

Glean: Customer data not used to train foundational AI models; strict permission mirroring ensures data is only surfaced to authorised users; comprehensive audit logs and configurable retention policies

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.

4/5

Customer data not used to train foundational AI models; strict permission mirroring ensures data is only surfaced to authorised users; comprehensive audit logs and configurable retention policies

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

ISO 27001, SOC 2, Cyber Essentials, etc.

Glean: SOC 2 Type II certified; HIPAA BAA available; GDPR compliant with DPA; no ISO 27001 publicly confirmed

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

3/5

SOC 2 Type II certified; HIPAA BAA available; GDPR compliant with DPA; no ISO 27001 publicly confirmed

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

Suitability for regulated industries and professional services

Glean: Permission-enforcement architecture, HIPAA BAA, audit logs, and data residency options make Glean well-suited to large regulated enterprises; US jurisdiction is the primary limitation for EU-sovereignty-focused buyers

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.

4/5

Permission-enforcement architecture, HIPAA BAA, audit logs, and data residency options make Glean well-suited to large regulated enterprises; US jurisdiction is the primary limitation for EU-sovereignty-focused buyers

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.

Total Score

16/25

21/25

Best For

Glean

Best for privacy-conscious teams who need strong data retention controls.

Lexis+ AI

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.

Detailed Comparison

Glean vs Lexis+ AI: Trust & Compliance Comparison

Glean (Glean, US) scores 16/25 overall with a Bronze (Moderate) trust badge. Enterprise AI search that connects and searches all company knowledge with strict access controls. 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

Lexis+ AI leads with 4/5 vs 3/5.

●Glean (3/5): AWS-hosted with US and EU options; data residency configurations available for regulated industries on request; permission-enforcement architecture prevents cross-tenant data exposure

●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

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

●Glean (2/5): US Delaware corporation subject to US jurisdiction and CLOUD Act; DPAs available for GDPR; Capital One Ventures as investor may raise considerations for some financial services organisations

●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

Both score equally at 4/5.

●Glean (4/5): Customer data not used to train foundational AI models; strict permission mirroring ensures data is only surfaced to authorised users; comprehensive audit logs and configurable retention policies

●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 3/5.

●Glean (3/5): SOC 2 Type II certified; HIPAA BAA available; GDPR compliant with DPA; no ISO 27001 publicly confirmed

●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.

●Glean (4/5): Permission-enforcement architecture, HIPAA BAA, audit logs, and data residency options make Glean well-suited to large regulated enterprises; US jurisdiction is the primary limitation for EU-sovereignty-focused buyers

●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	Glean	Lexis+ AI
ISO 27001	No	Yes
ISO 27701	No	Yes
SOC 2 Type II	Yes	Yes

Overall Verdict

Lexis+ AI has a clear trust advantage, scoring 21/25 compared to Glean's 16/25. Lexis+ AI particularly excels in data residency, legal jurisdiction, certifications, regulatory fit.

Frequently Asked Questions

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

Glean has a TrustKit score of 16/25 while Lexis+ AI scores 21/25. Lexis+ AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

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

Glean scores 3/5 for data residency (AWS-hosted with US and EU options; data residency configurations available for regulated industries on request; permission-enforcement architecture prevents cross-tenant data exposure), while Lexis+ AI scores 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.).

Are Glean and Lexis+ AI GDPR compliant?

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

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