Scale AI

AI data labeling and enterprise AI platform for building production-grade AI systems

Lexis+ AI

Hallucination-free AI legal research with authoritative LexisNexis sources

Scale AI

Strong

20/25

Lexis+ AI

Strong

21/25

Score Breakdown

DimensionScale AILexis+ AI

Data Residency

Where is your data stored and processed?

Scale AI: US-based cloud hosting with on-premise deployment available; FedRAMP cloud for government; data isolated per project

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.

4/5

US-based cloud hosting with on-premise deployment available; FedRAMP cloud for government; data isolated per project

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?

Scale AI: US Delaware corporation subject to CLOUD Act; standard SCCs available for international data transfers

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 CLOUD Act; standard SCCs available for international data transfers

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?

Scale AI: Customer data used only for contracted tasks with strict annotator access controls; cryptographic audit trails; no cross-customer data sharing

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

Customer data used only for contracted tasks with strict annotator access controls; cryptographic audit trails; no cross-customer data sharing

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.

Scale AI: SOC 2 Type II, ISO 27001, FedRAMP Moderate and FedRAMP High — among the highest compliance credentials in the AI sector

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

5/5

SOC 2 Type II, ISO 27001, FedRAMP Moderate and FedRAMP High — among the highest compliance credentials in the AI sector

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

Scale AI: Government-grade security posture suitable for defence, intelligence, financial services, and healthcare AI development workloads

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

Government-grade security posture suitable for defence, intelligence, financial services, and healthcare AI development workloads

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

20/25

21/25

Best For

Scale 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.

Lexis+ AI

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

Detailed Comparison

Lexis+ AI vs Scale AI: Trust & Compliance Comparison

Lexis+ AI (LexisNexis, GB) scores 21/25 overall with a Silver (Strong) trust badge. Hallucination-free AI legal research with authoritative LexisNexis sources. Scale AI (Scale AI, US) scores 20/25 with a Silver (Strong) trust badge. AI data labeling and enterprise AI platform for building production-grade AI systems.

Dimension-by-Dimension Breakdown

#### Data Residency

Both score equally at 4/5.

●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.

●Scale AI (4/5): US-based cloud hosting with on-premise deployment available; FedRAMP cloud for government; data isolated per project

#### Legal Jurisdiction

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

●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.

●Scale AI (2/5): US Delaware corporation subject to CLOUD Act; standard SCCs available for international data transfers

#### Data Retention & Training

Scale AI leads with 5/5 vs 4/5.

●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.

●Scale AI (5/5): Customer data used only for contracted tasks with strict annotator access controls; cryptographic audit trails; no cross-customer data sharing

#### Certifications

Scale AI leads with 5/5 vs 4/5.

●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.

●Scale AI (5/5): SOC 2 Type II, ISO 27001, FedRAMP Moderate and FedRAMP High — among the highest compliance credentials in the AI sector

#### Regulatory Fit

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

●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.

●Scale AI (4/5): Government-grade security posture suitable for defence, intelligence, financial services, and healthcare AI development workloads

Certifications at a Glance

Certification	Lexis+ AI	Scale AI
FedRAMP High	No	Yes
FedRAMP Moderate	No	Yes
ISO 27001	Yes	Yes
ISO 27701	Yes	No
SOC 2 Type II	Yes	Yes

Overall Verdict

Lexis+ AI and Scale AI are closely matched on trust and compliance, with scores of 21/25 and 20/25 respectively. The right choice depends on your specific regulatory requirements and existing technology stack.

Frequently Asked Questions

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

Scale AI has a TrustKit score of 20/25 while Lexis+ AI scores 21/25. Lexis+ AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

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

Scale AI scores 4/5 for data residency (US-based cloud hosting with on-premise deployment available; FedRAMP cloud for government; data isolated per project), 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 Scale AI and Lexis+ AI GDPR compliant?

Both tools are assessed across five compliance dimensions. Scale AI 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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