Lexis+ AI

Hallucination-free AI legal research with authoritative LexisNexis sources

LegalFly

Belgian legal AI that automates repetitive tasks and translates legalese

Lexis+ AI

Strong

21/25

LegalFly

Strong

19/25

Score Breakdown

DimensionLexis+ AILegalFly

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.

LegalFly: EU data centres; Belgian company with EU-only processing

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

EU data centres; Belgian company with EU-only processing

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.

LegalFly: Belgian NV under EU law; essential for legal data sovereignty

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

Belgian NV under EU law; essential for legal data sovereignty

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.

LegalFly: No training on customer legal data; GDPR-compliant

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.

4/5

No training on customer legal data; GDPR-compliant

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.

LegalFly: No public certifications yet; Series A stage

4/5

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 public certifications yet; Series A stage

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.

LegalFly: EU-headquartered legal AI suitable for European law firms and legal departments

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

EU-headquartered legal AI suitable for European law firms and legal departments

Total Score

21/25

19/25

Best For

Lexis+ AI

Best for EU-headquartered organisations needing maximum data sovereignty; regulated industries (ICO); privacy-conscious teams who need strong data retention controls.

LegalFly

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

LegalFly vs Lexis+ AI: Trust & Compliance Comparison

LegalFly (LegalFly, BE) scores 19/25 overall with a Silver (Strong) trust badge. Belgian legal AI that automates repetitive tasks and translates legalese. 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

LegalFly leads with 5/5 vs 4/5.

●LegalFly (5/5): EU data centres; Belgian company with EU-only processing

●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

LegalFly leads with 5/5 vs 4/5.

●LegalFly (5/5): Belgian NV under EU law; essential for legal data sovereignty

●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.

●LegalFly (4/5): No training on customer legal data; GDPR-compliant

●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.

●LegalFly (1/5): No public certifications yet; Series A stage

●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.

●LegalFly (4/5): EU-headquartered legal AI suitable for European law firms and legal departments

●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	LegalFly	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 LegalFly's 19/25. Lexis+ AI particularly excels in certifications, regulatory fit.

Frequently Asked Questions

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

Lexis+ AI has a TrustKit score of 21/25 while LegalFly scores 19/25. Lexis+ AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Lexis+ AI and LegalFly 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 LegalFly scores 5/5 (EU data centres; Belgian company with EU-only processing).

Are Lexis+ AI and LegalFly GDPR compliant?

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

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