Langfuse

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

Helicone AI

Open-source LLM observability and monitoring platform for AI applications

Langfuse

Excellent

22/25

Helicone AI

Moderate

14/25

Score Breakdown

DimensionLangfuseHelicone 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.

Helicone AI: Self-host option gives full control over data residency. Cloud version hosted on US infrastructure. Self-hosting enables any region.

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.

3/5

Self-host option gives full control over data residency. Cloud version hosted on US infrastructure. Self-hosting enables any region.

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.

Helicone AI: US entity. Cloud version subject to US jurisdiction. Self-hosted deployment avoids jurisdictional concerns.

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.

2/5

US entity. Cloud version subject to US jurisdiction. Self-hosted deployment avoids jurisdictional concerns.

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.

Helicone AI: Self-hosted deployment provides complete data control. No data leaves the organisation's infrastructure. Cloud version does not use customer data for training.

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.

4/5

Self-hosted deployment provides complete data control. No data leaves the organisation's infrastructure. Cloud version does not use customer data for training.

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.

Helicone AI: No formal security certifications. Open-source codebase allows security auditing. Early-stage startup.

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 formal security certifications. Open-source codebase allows security auditing. Early-stage startup.

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.

Helicone AI: Self-hosting capability makes it suitable for regulated environments. Organisations can audit the open-source code and maintain full data sovereignty.

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

Self-hosting capability makes it suitable for regulated environments. Organisations can audit the open-source code and maintain full data sovereignty.

Total Score

22/25

14/25

Best For

Langfuse

Best for privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment; teams on a tight budget.

Helicone AI

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.

Detailed Comparison

Helicone AI vs Langfuse: Trust & Compliance Comparison

Helicone AI (Helicone, US) scores 14/25 overall with a Bronze (Moderate) trust badge. Open-source LLM observability and monitoring platform for AI applications. Langfuse (Langfuse (ClickHouse), DE) scores 22/25 with a Gold (Excellent) trust badge. Open-source LLM observability and engineering platform for tracing, evaluation, and prompt management.

Dimension-by-Dimension Breakdown

#### Data Residency

Langfuse leads with 5/5 vs 3/5.

●Helicone AI (3/5): Self-host option gives full control over data residency. Cloud version hosted on US infrastructure. Self-hosting enables any region.

●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.

#### Legal Jurisdiction

Langfuse leads with 3/5 vs 2/5.

●Helicone AI (2/5): US entity. Cloud version subject to US jurisdiction. Self-hosted deployment avoids jurisdictional concerns.

●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.

#### Data Retention & Training

Langfuse leads with 5/5 vs 4/5.

●Helicone AI (4/5): Self-hosted deployment provides complete data control. No data leaves the organisation's infrastructure. Cloud version does not use customer data for training.

●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.

#### Certifications

Langfuse leads with 5/5 vs 2/5.

●Helicone AI (2/5): No formal security certifications. Open-source codebase allows security auditing. Early-stage startup.

●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.

#### Regulatory Fit

Langfuse leads with 4/5 vs 3/5.

●Helicone AI (3/5): Self-hosting capability makes it suitable for regulated environments. Organisations can audit the open-source code and maintain full data sovereignty.

●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.

Certifications at a Glance

Certification	Helicone AI	Langfuse
ISO 27001	No	Yes
SOC 2 Type II	No	Yes

Overall Verdict

Langfuse has a clear trust advantage, scoring 22/25 compared to Helicone AI's 14/25. Langfuse particularly excels in data residency, legal jurisdiction, data retention & training, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Langfuse or Helicone AI?

Langfuse has a TrustKit score of 22/25 while Helicone AI scores 14/25. Langfuse currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Langfuse and Helicone 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 Helicone AI scores 3/5 (Self-host option gives full control over data residency. Cloud version hosted on US infrastructure. Self-hosting enables any region.).

Are Langfuse and Helicone AI GDPR compliant?

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

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