Langfuse

Open-source LLM observability and engineering platform for tracing, evaluation, and prompt management

Nscale

European AI hyperscaler with sovereign GPU cloud infrastructure in Norway and UK

Langfuse

Excellent

22/25

Nscale

Strong

17/25

Score Breakdown

DimensionLangfuseNscale

Data Residency

Where is your data stored and processed?

Langfuse: EU cloud region (Ireland) keeps data within EEA. Full self-hosting option allows air-gapped EU deployments with zero cloud dependency. Customer can choose exact data location.

Nscale: Norwegian data centres offer EEA data residency with renewable hydropower. UK facilities planned. Customer workloads stay on Nscale infrastructure. Norway option provides strong EU data residency.

5/5

EU cloud region (Ireland) keeps data within EEA. Full self-hosting option allows air-gapped EU deployments with zero cloud dependency. Customer can choose exact data location.

4/5

Norwegian data centres offer EEA data residency with renewable hydropower. UK facilities planned. Customer workloads stay on Nscale infrastructure. Norway option provides strong EU data residency.

Legal Jurisdiction

Which laws govern the company and your data?

Langfuse: German GmbH (EU company) but acquired by ClickHouse Inc. (US). German law governs the entity but US parent introduces CLOUD Act considerations. Self-hosted deployment eliminates US cloud dependency.

Nscale: UK incorporation provides GDPR adequacy but UK CLOUD Act equivalent (Investigatory Powers Act) applies. Norwegian data centres under EEA law offer stronger protection for EU workloads.

3/5

German GmbH (EU company) but acquired by ClickHouse Inc. (US). German law governs the entity but US parent introduces CLOUD Act considerations. Self-hosted deployment eliminates US cloud dependency.

3/5

UK incorporation provides GDPR adequacy but UK CLOUD Act equivalent (Investigatory Powers Act) applies. Norwegian data centres under EEA law offer stronger protection for EU workloads.

Data Retention & Training

Is your data used for model training?

Langfuse: Explicitly does not train on customer data. Customer traces and prompts processed solely to provide the service. Self-hosted gives full data lifecycle control.

Nscale: Infrastructure provider only—Nscale does not access, process, or retain customer workload data. Customers have full control over their compute environments.

5/5

Explicitly does not train on customer data. Customer traces and prompts processed solely to provide the service. Self-hosted gives full data lifecycle control.

5/5

Infrastructure provider only—Nscale does not access, process, or retain customer workload data. Customers have full control over their compute environments.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Langfuse: SOC 2 Type II and ISO 27001 certified with annual audits. HIPAA BAA available. Annual external penetration tests. Excellent certification posture for a developer tooling company.

Nscale: No publicly listed certifications yet. Expected for a fast-growing infrastructure company at this stage. Data centre certifications likely in progress.

5/5

SOC 2 Type II and ISO 27001 certified with annual audits. HIPAA BAA available. Annual external penetration tests. Excellent certification posture for a developer tooling company.

2/5

No publicly listed certifications yet. Expected for a fast-growing infrastructure company at this stage. Data centre certifications likely in progress.

Regulatory Fit

Suitability for regulated industries and professional services

Langfuse: EU data hosting, GDPR DPA, German legal origin, self-hosting for regulated industries. HIPAA compliance extends reach to healthcare. The ClickHouse acquisition is the main caveat for sovereignty purists.

Nscale: Strong for organisations needing European GPU compute sovereignty. Norwegian facilities particularly suitable for EU regulated workloads. UK incorporation is adequate but not optimal for strict EU sovereignty requirements.

4/5

EU data hosting, GDPR DPA, German legal origin, self-hosting for regulated industries. HIPAA compliance extends reach to healthcare. The ClickHouse acquisition is the main caveat for sovereignty purists.

3/5

Strong for organisations needing European GPU compute sovereignty. Norwegian facilities particularly suitable for EU regulated workloads. UK incorporation is adequate but not optimal for strict EU sovereignty requirements.

Total Score

22/25

17/25

Best For

Langfuse

Best for regulated industries (BaFin, CNIL); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment; teams on a tight budget.

Nscale

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

Detailed Comparison

Langfuse vs Nscale: Trust & Compliance Comparison

Langfuse (Langfuse (ClickHouse), DE) scores 22/25 overall with a Gold (Excellent) trust badge. Open-source LLM observability and engineering platform for tracing, evaluation, and prompt management. Nscale (Nscale, GB) scores 17/25 with a Silver (Strong) trust badge. European AI hyperscaler with sovereign GPU cloud infrastructure in Norway and UK.

Dimension-by-Dimension Breakdown

#### Data Residency

Langfuse leads with 5/5 vs 4/5.

●Langfuse (5/5): EU cloud region (Ireland) keeps data within EEA. Full self-hosting option allows air-gapped EU deployments with zero cloud dependency. Customer can choose exact data location.

●Nscale (4/5): Norwegian data centres offer EEA data residency with renewable hydropower. UK facilities planned. Customer workloads stay on Nscale infrastructure. Norway option provides strong EU data residency.

#### Legal Jurisdiction

Both score equally at 3/5.

●Langfuse (3/5): German GmbH (EU company) but acquired by ClickHouse Inc. (US). German law governs the entity but US parent introduces CLOUD Act considerations. Self-hosted deployment eliminates US cloud dependency.

●Nscale (3/5): UK incorporation provides GDPR adequacy but UK CLOUD Act equivalent (Investigatory Powers Act) applies. Norwegian data centres under EEA law offer stronger protection for EU workloads.

#### Data Retention & Training

Both score equally at 5/5.

●Langfuse (5/5): Explicitly does not train on customer data. Customer traces and prompts processed solely to provide the service. Self-hosted gives full data lifecycle control.

●Nscale (5/5): Infrastructure provider only—Nscale does not access, process, or retain customer workload data. Customers have full control over their compute environments.

#### Certifications

Langfuse leads with 5/5 vs 2/5.

●Langfuse (5/5): SOC 2 Type II and ISO 27001 certified with annual audits. HIPAA BAA available. Annual external penetration tests. Excellent certification posture for a developer tooling company.

●Nscale (2/5): No publicly listed certifications yet. Expected for a fast-growing infrastructure company at this stage. Data centre certifications likely in progress.

#### Regulatory Fit

Langfuse leads with 4/5 vs 3/5.

●Langfuse (4/5): EU data hosting, GDPR DPA, German legal origin, self-hosting for regulated industries. HIPAA compliance extends reach to healthcare. The ClickHouse acquisition is the main caveat for sovereignty purists.

●Nscale (3/5): Strong for organisations needing European GPU compute sovereignty. Norwegian facilities particularly suitable for EU regulated workloads. UK incorporation is adequate but not optimal for strict EU sovereignty requirements.

Certifications at a Glance

Certification	Langfuse	Nscale
ISO 27001	Yes	No
SOC 2 Type II	Yes	No

Overall Verdict

Langfuse has a clear trust advantage, scoring 22/25 compared to Nscale's 17/25. Langfuse particularly excels in data residency, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Langfuse or Nscale?

Langfuse has a TrustKit score of 22/25 while Nscale scores 17/25. Langfuse currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Langfuse and Nscale compare on data residency?

Langfuse scores 5/5 for data residency (EU cloud region (Ireland) keeps data within EEA. Full self-hosting option allows air-gapped EU deployments with zero cloud dependency. Customer can choose exact data location.), while Nscale scores 4/5 (Norwegian data centres offer EEA data residency with renewable hydropower. UK facilities planned. Customer workloads stay on Nscale infrastructure. Norway option provides strong EU data residency.).

Are Langfuse and Nscale GDPR compliant?

Both tools are assessed across five compliance dimensions. Langfuse has a regulatory fit score of 4/5 and Nscale scores 3/5. Check the full comparison above for a detailed breakdown.

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