Kagi

Privacy-first AI search engine with no ads and no tracking

Lexis+ AI

Hallucination-free AI legal research with authoritative LexisNexis sources

Kagi

Caution

11/25

Lexis+ AI

Strong

21/25

Score Breakdown

DimensionKagiLexis+ AI

Data Residency

Where is your data stored and processed?

Kagi: All data is processed on US infrastructure with no EU data residency option currently available.

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.

1/5

All data is processed on US infrastructure with no EU data residency option currently available.

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?

Kagi: US-incorporated and subject to CLOUD Act; strong privacy-by-design model but US legal jurisdiction is a residual risk.

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-incorporated and subject to CLOUD Act; strong privacy-by-design model but US legal jurisdiction is a residual risk.

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?

Kagi: No training on user search data, no persistent user profiling, and no ad-based tracking by design.

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.

5/5

No training on user search data, no persistent user profiling, and no ad-based tracking by design.

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.

Kagi: No SOC 2, ISO 27001, or other formal third-party security certifications are currently published.

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

1/5

No SOC 2, ISO 27001, or other formal third-party security certifications are currently published.

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

Kagi: Privacy-first business model is commendable, but lack of certifications and US jurisdiction limit regulated institutional use in Europe.

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.

2/5

Privacy-first business model is commendable, but lack of certifications and US jurisdiction limit regulated institutional use in Europe.

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

11/25

21/25

Best For

Kagi

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; enterprises requiring SSO integration.

Detailed Comparison

Kagi vs Lexis+ AI: Trust & Compliance Comparison

Kagi (Kagi, US) scores 11/25 overall with a Review Required (Caution) trust badge. Privacy-first AI search engine with no ads and no tracking. 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 1/5.

●Kagi (1/5): All data is processed on US infrastructure with no EU data residency option currently available.

●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.

●Kagi (2/5): US-incorporated and subject to CLOUD Act; strong privacy-by-design model but US legal jurisdiction is a residual risk.

●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

Kagi leads with 5/5 vs 4/5.

●Kagi (5/5): No training on user search data, no persistent user profiling, and no ad-based tracking by design.

●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 1/5.

●Kagi (1/5): No SOC 2, ISO 27001, or other formal third-party security certifications are currently published.

●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 2/5.

●Kagi (2/5): Privacy-first business model is commendable, but lack of certifications and US jurisdiction limit regulated institutional use in Europe.

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

Overall Verdict

Lexis+ AI has a clear trust advantage, scoring 21/25 compared to Kagi's 11/25. Lexis+ AI particularly excels in data residency, legal jurisdiction, certifications, regulatory fit.

Frequently Asked Questions

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

Kagi has a TrustKit score of 11/25 while Lexis+ AI scores 21/25. Lexis+ AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

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

Kagi scores 1/5 for data residency (All data is processed on US infrastructure with no EU data residency option currently available.), 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 Kagi and Lexis+ AI GDPR compliant?

Both tools are assessed across five compliance dimensions. Kagi has a regulatory fit score of 2/5 and Lexis+ AI scores 5/5. Check the full comparison above for a detailed breakdown.

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