Langfuse

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

regolo.ai

EU-sovereign, zero-retention LLM inference on green Italian datacentres

Langfuse

Excellent

22/25

regolo.ai

Excellent

23/25

Score Breakdown

DimensionLangfuseregolo.ai

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.

regolo.ai: All inference runs exclusively in Seeweb's Italian (EU) datacentres on renewable energy, with no data leaving the EU. Explicit EU-only 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.

5/5

All inference runs exclusively in Seeweb's Italian (EU) datacentres on renewable energy, with no data leaving the EU. Explicit EU-only 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.

regolo.ai: Operated by Seeweb S.r.l., an Italian company within the EU-listed DHH group, with no US parent. Fully under EU/Italian jurisdiction.

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.

5/5

Operated by Seeweb S.r.l., an Italian company within the EU-listed DHH group, with no US parent. Fully under EU/Italian jurisdiction.

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.

regolo.ai: Explicit zero-data-retention architecture: prompts and outputs processed in memory and discarded, never stored, logged long-term, or used for training, with GDPR/DPA alignment.

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

Explicit zero-data-retention architecture: prompts and outputs processed in memory and discarded, never stored, logged long-term, or used for training, with GDPR/DPA alignment.

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.

regolo.ai: Inherits Seeweb's strong stack: ISO 27001, 27017, 27018, 22301, 14001, 9001, plus CSA STAR Level 1, CISPE and ACN recognition. SOC 2 Type II is not published, so not a full 5.

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.

4/5

Inherits Seeweb's strong stack: ISO 27001, 27017, 27018, 22301, 14001, 9001, plus CSA STAR Level 1, CISPE and ACN recognition. SOC 2 Type II is not published, so not a full 5.

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.

regolo.ai: Strong fit for most EU regulated industries via EU residency, zero retention, and broad ISO certification, suitable for buyers under the Italian Garante and other EU regulators; not yet sector-specific (e.g., no published BaFin/finance-specific attestations).

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.

4/5

Strong fit for most EU regulated industries via EU residency, zero retention, and broad ISO certification, suitable for buyers under the Italian Garante and other EU regulators; not yet sector-specific (e.g., no published BaFin/finance-specific attestations).

Total Score

22/25

23/25

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; enterprises requiring SSO integration.

regolo.ai

Best for EU-headquartered organisations needing maximum data sovereignty; organisations requiring broad certification coverage (ISO/IEC 27001, ISO/IEC 27017, ISO/IEC 27018); regulated industries (Garante, CNIL); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment.

Detailed Comparison

Langfuse vs regolo.ai: 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. regolo.ai (Seeweb, IT) scores 23/25 with a Gold (Excellent) trust badge. EU-sovereign, zero-retention LLM inference on green Italian datacentres.

Dimension-by-Dimension Breakdown

#### Data Residency

Both score equally at 5/5.

●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.

●regolo.ai (5/5): All inference runs exclusively in Seeweb's Italian (EU) datacentres on renewable energy, with no data leaving the EU. Explicit EU-only residency.

#### Legal Jurisdiction

regolo.ai leads with 5/5 vs 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.

●regolo.ai (5/5): Operated by Seeweb S.r.l., an Italian company within the EU-listed DHH group, with no US parent. Fully under EU/Italian jurisdiction.

#### 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.

●regolo.ai (5/5): Explicit zero-data-retention architecture: prompts and outputs processed in memory and discarded, never stored, logged long-term, or used for training, with GDPR/DPA alignment.

#### Certifications

Langfuse leads with 5/5 vs 4/5.

●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.

●regolo.ai (4/5): Inherits Seeweb's strong stack: ISO 27001, 27017, 27018, 22301, 14001, 9001, plus CSA STAR Level 1, CISPE and ACN recognition. SOC 2 Type II is not published, so not a full 5.

#### Regulatory Fit

Both score equally at 4/5.

●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.

●regolo.ai (4/5): Strong fit for most EU regulated industries via EU residency, zero retention, and broad ISO certification, suitable for buyers under the Italian Garante and other EU regulators; not yet sector-specific (e.g., no published BaFin/finance-specific attestations).

Certifications at a Glance

Certification	Langfuse	regolo.ai
ACN recognition	No	Yes
CISPE	No	Yes
CSA STAR Level 1	No	Yes
ISO 14001	No	Yes
ISO 27001	Yes	No
ISO 9001	No	Yes
ISO/IEC 22301	No	Yes
ISO/IEC 27001	No	Yes
ISO/IEC 27017	No	Yes
ISO/IEC 27018	No	Yes
SOC 2 Type II	Yes	No

Overall Verdict

Langfuse and regolo.ai are closely matched on trust and compliance, with scores of 22/25 and 23/25 respectively. The right choice depends on your specific regulatory requirements and existing technology stack.

Frequently Asked Questions

Which is better for EU compliance, Langfuse or regolo.ai?

Langfuse has a TrustKit score of 22/25 while regolo.ai scores 23/25. regolo.ai currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Langfuse and regolo.ai 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 regolo.ai scores 5/5 (All inference runs exclusively in Seeweb's Italian (EU) datacentres on renewable energy, with no data leaving the EU. Explicit EU-only residency.).

Are Langfuse and regolo.ai GDPR compliant?

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

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