Noxtua

Europe's sovereign legal AI with its own European-trained legal LLM

Perplexity AI

AI-powered answer engine that searches the web and cites its sources

Noxtua

Excellent

25/25

Perplexity AI

Moderate

15/25

Score Breakdown

DimensionNoxtuaPerplexity AI

Data Residency

Where is your data stored and processed?

Noxtua: Processing occurs exclusively on European infrastructure (Open Telekom Cloud by Deutsche Telekom and IONOS) with no connection to US cloud providers, plus an on-premise deployment option. Best-in-class EU data residency.

Perplexity AI: US-based AWS infrastructure; no regional data residency options currently

5/5

Processing occurs exclusively on European infrastructure (Open Telekom Cloud by Deutsche Telekom and IONOS) with no connection to US cloud providers, plus an on-premise deployment option. Best-in-class EU data residency.

2/5

US-based AWS infrastructure; no regional data residency options currently

Legal Jurisdiction

Which laws govern the company and your data?

Noxtua: Incorporated in Germany as Noxtua SE (formerly Xayn AG), an EU/EEA entity with no US parent. Designed to meet German professional-secrecy law (§ 43e BRAO, § 203 StGB).

Perplexity AI: US Delaware corporation subject to CLOUD Act; GDPR compliance via DPA

5/5

Incorporated in Germany as Noxtua SE (formerly Xayn AG), an EU/EEA entity with no US parent. Designed to meet German professional-secrecy law (§ 43e BRAO, § 203 StGB).

2/5

US Delaware corporation subject to CLOUD Act; GDPR compliance via DPA

Data Retention & Training

Is your data used for model training?

Noxtua: Explicitly states customer data is never used to train, retrain or improve AI models, with sovereign/on-premise deployment and enterprise DPA-level controls. Specific configurable retention windows are not publicly detailed but the no-training and isolation posture is strong.

Perplexity AI: Enterprise plans offer zero data retention; no use of enterprise data for AI training

5/5

Explicitly states customer data is never used to train, retrain or improve AI models, with sovereign/on-premise deployment and enterprise DPA-level controls. Specific configurable retention windows are not publicly detailed but the no-training and isolation posture is strong.

5/5

Enterprise plans offer zero data retention; no use of enterprise data for AI training

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Noxtua: Extensive published certification stack: ISO 42001 (first German company), ISO 27001, 27017, 27018, 9001, plus BSI C5 and TISAX. No SOC 2 (US-oriented), but European sector and AI-specific certifications exceed the baseline.

Perplexity AI: SOC 2 Type II certified; HIPAA BAA available for enterprise

5/5

Extensive published certification stack: ISO 42001 (first German company), ISO 27001, 27017, 27018, 9001, plus BSI C5 and TISAX. No SOC 2 (US-oriented), but European sector and AI-specific certifications exceed the baseline.

3/5

SOC 2 Type II certified; HIPAA BAA available for enterprise

Regulatory Fit

Suitability for regulated industries and professional services

Noxtua: Purpose-built for regulated EU legal work, explicitly meeting attorney confidentiality and professional-secrecy requirements, with backing from major law firms and legal publishers. Suitable for the most demanding EU regulated legal and public-sector use.

Perplexity AI: Strong for research-focused business use; US hosting limits EU data residency suitability

5/5

Purpose-built for regulated EU legal work, explicitly meeting attorney confidentiality and professional-secrecy requirements, with backing from major law firms and legal publishers. Suitable for the most demanding EU regulated legal and public-sector use.

3/5

Strong for research-focused business use; US hosting limits EU data residency suitability

Total Score

25/25

15/25

Best For

Noxtua

Best for EU-headquartered organisations needing maximum data sovereignty; organisations requiring broad certification coverage (ISO 42001, ISO 27001, ISO 27017); regulated industries (BfDI, BaFin); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment.

Perplexity AI

Best for privacy-conscious teams who need strong data retention controls; teams on a tight budget.

Detailed Comparison

Noxtua vs Perplexity AI: Trust & Compliance Comparison

Noxtua (Noxtua, DE) scores 25/25 overall with a Gold (Excellent) trust badge. Europe's sovereign legal AI with its own European-trained legal LLM. Perplexity AI (Perplexity AI, Inc., US) scores 15/25 with a Bronze (Moderate) trust badge. AI-powered answer engine that searches the web and cites its sources.

Dimension-by-Dimension Breakdown

#### Data Residency

Noxtua leads with 5/5 vs 2/5.

●Noxtua (5/5): Processing occurs exclusively on European infrastructure (Open Telekom Cloud by Deutsche Telekom and IONOS) with no connection to US cloud providers, plus an on-premise deployment option. Best-in-class EU data residency.

●Perplexity AI (2/5): US-based AWS infrastructure; no regional data residency options currently

#### Legal Jurisdiction

Noxtua leads with 5/5 vs 2/5.

●Noxtua (5/5): Incorporated in Germany as Noxtua SE (formerly Xayn AG), an EU/EEA entity with no US parent. Designed to meet German professional-secrecy law (§ 43e BRAO, § 203 StGB).

●Perplexity AI (2/5): US Delaware corporation subject to CLOUD Act; GDPR compliance via DPA

#### Data Retention & Training

Both score equally at 5/5.

●Noxtua (5/5): Explicitly states customer data is never used to train, retrain or improve AI models, with sovereign/on-premise deployment and enterprise DPA-level controls. Specific configurable retention windows are not publicly detailed but the no-training and isolation posture is strong.

●Perplexity AI (5/5): Enterprise plans offer zero data retention; no use of enterprise data for AI training

#### Certifications

Noxtua leads with 5/5 vs 3/5.

●Noxtua (5/5): Extensive published certification stack: ISO 42001 (first German company), ISO 27001, 27017, 27018, 9001, plus BSI C5 and TISAX. No SOC 2 (US-oriented), but European sector and AI-specific certifications exceed the baseline.

●Perplexity AI (3/5): SOC 2 Type II certified; HIPAA BAA available for enterprise

#### Regulatory Fit

Noxtua leads with 5/5 vs 3/5.

●Noxtua (5/5): Purpose-built for regulated EU legal work, explicitly meeting attorney confidentiality and professional-secrecy requirements, with backing from major law firms and legal publishers. Suitable for the most demanding EU regulated legal and public-sector use.

●Perplexity AI (3/5): Strong for research-focused business use; US hosting limits EU data residency suitability

Certifications at a Glance

Certification	Noxtua	Perplexity AI
BSI C5	Yes	No
ISO 27001	Yes	No
ISO 27017	Yes	No
ISO 27018	Yes	No
ISO 42001	Yes	No
ISO 9001	Yes	No
SOC 2 Type II	No	Yes
TISAX	Yes	No

Overall Verdict

Noxtua has a clear trust advantage, scoring 25/25 compared to Perplexity AI's 15/25. Noxtua particularly excels in data residency, legal jurisdiction, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Noxtua or Perplexity AI?

Noxtua has a TrustKit score of 25/25 while Perplexity AI scores 15/25. Noxtua currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Noxtua and Perplexity AI compare on data residency?

Noxtua scores 5/5 for data residency (Processing occurs exclusively on European infrastructure (Open Telekom Cloud by Deutsche Telekom and IONOS) with no connection to US cloud providers, plus an on-premise deployment option. Best-in-class EU data residency.), while Perplexity AI scores 2/5 (US-based AWS infrastructure; no regional data residency options currently).

Are Noxtua and Perplexity AI GDPR compliant?

Both tools are assessed across five compliance dimensions. Noxtua has a regulatory fit score of 5/5 and Perplexity AI scores 3/5. Check the full comparison above for a detailed breakdown.

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