Dust

French AI platform for deploying AI assistants across your company's knowledge and tools

Langfuse

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

Dust

Excellent

23/25

Langfuse

Excellent

22/25

Score Breakdown

DimensionDustLangfuse

Data Residency

Where is your data stored and processed?

Dust: Data hosted exclusively in EU (France). French SAS incorporation means EU law governs by default. Internal company data connected to Dust stays in EU infrastructure.

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.

5/5

Data hosted exclusively in EU (France). French SAS incorporation means EU law governs by default. Internal company data connected to Dust stays in EU infrastructure.

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

Which laws govern the company and your data?

Dust: French SAS under French and EU law. GDPR applies as corporate law. CNIL oversight. No US parent company, no CLOUD Act exposure. Founded by ex-OpenAI researchers building for EU sovereignty.

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.

5/5

French SAS under French and EU law. GDPR applies as corporate law. CNIL oversight. No US parent company, no CLOUD Act exposure. Founded by ex-OpenAI researchers building for EU sovereignty.

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

Is your data used for model training?

Dust: Company data indexed by Dust is not used to train shared models. Data remains within the organisation's workspace. GDPR-compliant DPA available. Configurable data access controls per assistant.

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.

5/5

Company data indexed by Dust is not used to train shared models. Data remains within the organisation's workspace. GDPR-compliant DPA available. Configurable data access controls per assistant.

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

ISO 27001, SOC 2, Cyber Essentials, etc.

Dust: ISO 27001 certification. As a fast-growing startup, the certification portfolio is expanding. SOC 2 Type II would further strengthen enterprise procurement credibility.

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.

3/5

ISO 27001 certification. As a fast-growing startup, the certification portfolio is expanding. SOC 2 Type II would further strengthen enterprise procurement credibility.

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

Suitability for regulated industries and professional services

Dust: Excellent regulatory fit for European enterprises building internal AI agent infrastructure. French incorporation, EU hosting, GDPR-native design, and support for EU-sovereign LLM providers (Mistral) make Dust a top choice for sovereignty-conscious EU organisations.

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.

5/5

Excellent regulatory fit for European enterprises building internal AI agent infrastructure. French incorporation, EU hosting, GDPR-native design, and support for EU-sovereign LLM providers (Mistral) make Dust a top choice for sovereignty-conscious EU organisations.

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.

Total Score

23/25

22/25

Best For

Dust

Best for EU-headquartered organisations needing maximum data sovereignty; regulated industries (CNIL, BaFin); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment.

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.

Detailed Comparison

Dust vs Langfuse: Trust & Compliance Comparison

Dust (Dust, FR) scores 23/25 overall with a Gold (Excellent) trust badge. French AI platform for deploying AI assistants across your company's knowledge and tools. 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

Both score equally at 5/5.

●Dust (5/5): Data hosted exclusively in EU (France). French SAS incorporation means EU law governs by default. Internal company data connected to Dust stays in EU infrastructure.

●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

Dust leads with 5/5 vs 3/5.

●Dust (5/5): French SAS under French and EU law. GDPR applies as corporate law. CNIL oversight. No US parent company, no CLOUD Act exposure. Founded by ex-OpenAI researchers building for EU sovereignty.

●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

Both score equally at 5/5.

●Dust (5/5): Company data indexed by Dust is not used to train shared models. Data remains within the organisation's workspace. GDPR-compliant DPA available. Configurable data access controls per assistant.

●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 3/5.

●Dust (3/5): ISO 27001 certification. As a fast-growing startup, the certification portfolio is expanding. SOC 2 Type II would further strengthen enterprise procurement credibility.

●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

Dust leads with 5/5 vs 4/5.

●Dust (5/5): Excellent regulatory fit for European enterprises building internal AI agent infrastructure. French incorporation, EU hosting, GDPR-native design, and support for EU-sovereign LLM providers (Mistral) make Dust a top choice for sovereignty-conscious EU organisations.

●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	Dust	Langfuse
ISO 27001	Yes	Yes
SOC 2 Type II	No	Yes

Overall Verdict

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

Frequently Asked Questions

Which is better for EU compliance, Dust or Langfuse?

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

How do Dust and Langfuse compare on data residency?

Dust scores 5/5 for data residency (Data hosted exclusively in EU (France). French SAS incorporation means EU law governs by default. Internal company data connected to Dust stays in EU infrastructure.), while Langfuse scores 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.).

Are Dust and Langfuse GDPR compliant?

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

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