Langfuse

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

Rasa

Open-source conversational AI framework for building enterprise chatbots and voice assistants

Langfuse

Excellent

22/25

Rasa

Strong

19/25

Score Breakdown

DimensionLangfuseRasa

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.

Rasa: Open-source framework deployable on any infrastructure. Self-hosted option means data never leaves customer's environment. No cloud dependency for core functionality.

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

Open-source framework deployable on any infrastructure. Self-hosted option means data never leaves customer's environment. No cloud dependency for core functionality.

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.

Rasa: Dual incorporation: Rasa Technologies GmbH (Germany) and Rasa Technologies Inc (USA). German R&D but US entity introduces CLOUD Act considerations. Self-hosted deployments mitigate jurisdiction risks.

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

Dual incorporation: Rasa Technologies GmbH (Germany) and Rasa Technologies Inc (USA). German R&D but US entity introduces CLOUD Act considerations. Self-hosted deployments mitigate jurisdiction risks.

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.

Rasa: Self-hosted architecture gives customers complete control over data retention. Rasa does not access or host customer data. Open-source code allows full audit of data handling.

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

Self-hosted architecture gives customers complete control over data retention. Rasa does not access or host customer data. Open-source code allows full audit of data handling.

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.

Rasa: Controls aligned with ISO 27002. Supports GDPR and HIPAA compliance. No formal ISO 27001 or SOC 2 certifications listed. Self-hosted model shifts certification burden to customer.

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

Controls aligned with ISO 27002. Supports GDPR and HIPAA compliance. No formal ISO 27001 or SOC 2 certifications listed. Self-hosted model shifts certification burden to customer.

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.

Rasa: Excellent for regulated industries due to self-hosting capability. Used by enterprises in financial services, healthcare, and government. Full data control enables compliance with strict regulatory 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.

4/5

Excellent for regulated industries due to self-hosting capability. Used by enterprises in financial services, healthcare, and government. Full data control enables compliance with strict regulatory requirements.

Total Score

22/25

19/25

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.

Rasa

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

Detailed Comparison

Langfuse vs Rasa: 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. Rasa (Rasa, DE) scores 19/25 with a Silver (Strong) trust badge. Open-source conversational AI framework for building enterprise chatbots and voice assistants.

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.

●Rasa (5/5): Open-source framework deployable on any infrastructure. Self-hosted option means data never leaves customer's environment. No cloud dependency for core functionality.

#### 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.

●Rasa (3/5): Dual incorporation: Rasa Technologies GmbH (Germany) and Rasa Technologies Inc (USA). German R&D but US entity introduces CLOUD Act considerations. Self-hosted deployments mitigate jurisdiction risks.

#### 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.

●Rasa (5/5): Self-hosted architecture gives customers complete control over data retention. Rasa does not access or host customer data. Open-source code allows full audit of data handling.

#### 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.

●Rasa (2/5): Controls aligned with ISO 27002. Supports GDPR and HIPAA compliance. No formal ISO 27001 or SOC 2 certifications listed. Self-hosted model shifts certification burden to customer.

#### 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.

●Rasa (4/5): Excellent for regulated industries due to self-hosting capability. Used by enterprises in financial services, healthcare, and government. Full data control enables compliance with strict regulatory requirements.

Certifications at a Glance

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

Overall Verdict

Langfuse has a clear trust advantage, scoring 22/25 compared to Rasa's 19/25. Langfuse particularly excels in certifications.

Frequently Asked Questions

Which is better for EU compliance, Langfuse or Rasa?

Langfuse has a TrustKit score of 22/25 while Rasa scores 19/25. Langfuse currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Langfuse and Rasa 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 Rasa scores 5/5 (Open-source framework deployable on any infrastructure. Self-hosted option means data never leaves customer's environment. No cloud dependency for core functionality.).

Are Langfuse and Rasa GDPR compliant?

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

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