Langfuse

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

Linear

Fast, opinionated issue tracking with AI for engineering teams

Langfuse

Excellent

22/25

Linear

Moderate

16/25

Score Breakdown

DimensionLangfuseLinear

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.

Linear: EU data residency available (AWS eu-west-1); clearly documented and configurable at workspace level

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

EU data residency available (AWS eu-west-1); clearly documented and configurable at workspace level

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.

Linear: US Delaware corporation despite Scandinavian founders; CLOUD Act applies; DPA and SCCs available

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 Delaware corporation despite Scandinavian founders; CLOUD Act applies; DPA and SCCs available

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.

Linear: No training on customer data; OpenAI zero-retention API used for AI features; customer-controlled retention

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

No training on customer data; OpenAI zero-retention API used for AI features; customer-controlled retention

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.

Linear: SOC 2 Type II certified; ISO 27001 not yet confirmed; strong security posture for its size

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.

3/5

SOC 2 Type II certified; ISO 27001 not yet confirmed; strong security posture for its size

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.

Linear: Good for EU tech teams; EU residency option and SOC 2 support regulated use with appropriate DPA

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

Good for EU tech teams; EU residency option and SOC 2 support regulated use with appropriate DPA

Total Score

22/25

16/25

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.

Linear

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

Detailed Comparison

Langfuse vs Linear: 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. Linear (Linear, US) scores 16/25 with a Bronze (Moderate) trust badge. Fast, opinionated issue tracking with AI for engineering teams.

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.

●Linear (4/5): EU data residency available (AWS eu-west-1); clearly documented and configurable at workspace level

#### Legal Jurisdiction

Langfuse leads with 3/5 vs 2/5.

●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.

●Linear (2/5): US Delaware corporation despite Scandinavian founders; CLOUD Act applies; DPA and SCCs available

#### Data Retention & Training

Langfuse leads with 5/5 vs 4/5.

●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.

●Linear (4/5): No training on customer data; OpenAI zero-retention API used for AI features; customer-controlled retention

#### Certifications

Langfuse leads with 5/5 vs 3/5.

●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.

●Linear (3/5): SOC 2 Type II certified; ISO 27001 not yet confirmed; strong security posture for its size

#### 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.

●Linear (3/5): Good for EU tech teams; EU residency option and SOC 2 support regulated use with appropriate DPA

Certifications at a Glance

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

Overall Verdict

Langfuse has a clear trust advantage, scoring 22/25 compared to Linear's 16/25. 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 Linear?

Langfuse has a TrustKit score of 22/25 while Linear scores 16/25. Langfuse currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Langfuse and Linear 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 Linear scores 4/5 (EU data residency available (AWS eu-west-1); clearly documented and configurable at workspace level).

Are Langfuse and Linear GDPR compliant?

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

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