LangSmith (LangChain)

LLM observability, testing, and deployment platform for production AI applications

OVHcloud AI

European sovereign AI infrastructure—GPU compute and managed LLM APIs from France

Moderate

13/25

OVHcloud AI

Excellent

25/25

Score Breakdown

DimensionLangSmith (LangChain)OVHcloud AI

Data Residency

Where is your data stored and processed?

LangSmith (LangChain): Cloud product processes trace data (including prompts and LLM outputs) in US infrastructure. Self-hosted LangSmith Enterprise enables EU data residency. Open-source LangChain framework can run fully on-premise.

OVHcloud AI: Exclusively European data centres with full EU sovereign cloud capabilities. SecNumCloud-qualified infrastructure for highest-sensitivity French public sector requirements. Multiple EU country options (France, Germany, UK, Poland). Maximum data residency score.

2/5

Cloud product processes trace data (including prompts and LLM outputs) in US infrastructure. Self-hosted LangSmith Enterprise enables EU data residency. Open-source LangChain framework can run fully on-premise.

5/5

Exclusively European data centres with full EU sovereign cloud capabilities. SecNumCloud-qualified infrastructure for highest-sensitivity French public sector requirements. Multiple EU country options (France, Germany, UK, Poland). Maximum data residency score.

Legal Jurisdiction

Which laws govern the company and your data?

LangSmith (LangChain): California incorporation, US jurisdiction, CLOUD Act applies. SOC 2 Type II and GDPR DPA available. Self-hosted enterprise removes US cloud dependency for EU deployments.

OVHcloud AI: French SA incorporated under French law, subject to GDPR and EU AI Act as corporate law. No US parent, no CLOUD Act exposure. Founding member of GAIA-X. Active participant in EU sovereignty frameworks. Highest possible legal jurisdiction score.

2/5

California incorporation, US jurisdiction, CLOUD Act applies. SOC 2 Type II and GDPR DPA available. Self-hosted enterprise removes US cloud dependency for EU deployments.

5/5

French SA incorporated under French law, subject to GDPR and EU AI Act as corporate law. No US parent, no CLOUD Act exposure. Founding member of GAIA-X. Active participant in EU sovereignty frameworks. Highest possible legal jurisdiction score.

Data Retention & Training

Is your data used for model training?

LangSmith (LangChain): Trace data not used for LLM training. Configurable trace retention periods. Enterprise self-hosted gives full control over data lifecycle. Cloud product has clear data isolation per project.

OVHcloud AI: Customer data fully isolated per project. Not used for cross-customer model training. Configurable retention, audit logging, and data deletion workflows. GDPR-compliant DPA included with all cloud services.

4/5

Trace data not used for LLM training. Configurable trace retention periods. Enterprise self-hosted gives full control over data lifecycle. Cloud product has clear data isolation per project.

5/5

Customer data fully isolated per project. Not used for cross-customer model training. Configurable retention, audit logging, and data deletion workflows. GDPR-compliant DPA included with all cloud services.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

LangSmith (LangChain): SOC 2 Type II certification. Appropriate for a developer tooling company. ISO 27001 would strengthen the posture for enterprise regulated-industry procurement.

OVHcloud AI: ISO 27001, ISO 27017, ISO 27018, SOC 2 Type II, HDS (healthcare data hosting), and SecNumCloud qualification. Among the most comprehensively certified European cloud providers. HDS makes OVHcloud suitable for French healthcare AI workloads.

3/5

SOC 2 Type II certification. Appropriate for a developer tooling company. ISO 27001 would strengthen the posture for enterprise regulated-industry procurement.

5/5

ISO 27001, ISO 27017, ISO 27018, SOC 2 Type II, HDS (healthcare data hosting), and SecNumCloud qualification. Among the most comprehensively certified European cloud providers. HDS makes OVHcloud suitable for French healthcare AI workloads.

Regulatory Fit

Suitability for regulated industries and professional services

LangSmith (LangChain): Cloud product requires GDPR transfer mechanisms for EU personal data in traces. Self-hosted LangSmith Enterprise is the appropriate deployment for EU regulated industries. Open-source framework usage is unrestricted.

OVHcloud AI: Maximum regulatory fit for European organisations. SecNumCloud for French public sector and defence-adjacent workloads. HDS for healthcare. GDPR-native design. NIS2-aligned operational resilience. The strongest sovereignty profile of any managed AI infrastructure provider.

2/5

Cloud product requires GDPR transfer mechanisms for EU personal data in traces. Self-hosted LangSmith Enterprise is the appropriate deployment for EU regulated industries. Open-source framework usage is unrestricted.

5/5

Maximum regulatory fit for European organisations. SecNumCloud for French public sector and defence-adjacent workloads. HDS for healthcare. GDPR-native design. NIS2-aligned operational resilience. The strongest sovereignty profile of any managed AI infrastructure provider.

Total Score

13/25

25/25

Best For

LangSmith (LangChain)

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.

OVHcloud AI

Best for EU-headquartered organisations needing maximum data sovereignty; organisations requiring broad certification coverage (ISO 27001, ISO 27017, ISO 27018); regulated industries (CNIL, ANSSI); privacy-conscious teams who need strong data retention controls.

Detailed Comparison

LangSmith (LangChain) vs OVHcloud AI: Trust & Compliance Comparison

LangSmith (LangChain) (LangChain, US) scores 13/25 overall with a Bronze (Moderate) trust badge. LLM observability, testing, and deployment platform for production AI applications. OVHcloud AI (OVHcloud, FR) scores 25/25 with a Gold (Excellent) trust badge. European sovereign AI infrastructure—GPU compute and managed LLM APIs from France.

Dimension-by-Dimension Breakdown

#### Data Residency

OVHcloud AI leads with 5/5 vs 2/5.

●LangSmith (LangChain) (2/5): Cloud product processes trace data (including prompts and LLM outputs) in US infrastructure. Self-hosted LangSmith Enterprise enables EU data residency. Open-source LangChain framework can run fully on-premise.

●OVHcloud AI (5/5): Exclusively European data centres with full EU sovereign cloud capabilities. SecNumCloud-qualified infrastructure for highest-sensitivity French public sector requirements. Multiple EU country options (France, Germany, UK, Poland). Maximum data residency score.

#### Legal Jurisdiction

OVHcloud AI leads with 5/5 vs 2/5.

●LangSmith (LangChain) (2/5): California incorporation, US jurisdiction, CLOUD Act applies. SOC 2 Type II and GDPR DPA available. Self-hosted enterprise removes US cloud dependency for EU deployments.

●OVHcloud AI (5/5): French SA incorporated under French law, subject to GDPR and EU AI Act as corporate law. No US parent, no CLOUD Act exposure. Founding member of GAIA-X. Active participant in EU sovereignty frameworks. Highest possible legal jurisdiction score.

#### Data Retention & Training

OVHcloud AI leads with 5/5 vs 4/5.

●LangSmith (LangChain) (4/5): Trace data not used for LLM training. Configurable trace retention periods. Enterprise self-hosted gives full control over data lifecycle. Cloud product has clear data isolation per project.

●OVHcloud AI (5/5): Customer data fully isolated per project. Not used for cross-customer model training. Configurable retention, audit logging, and data deletion workflows. GDPR-compliant DPA included with all cloud services.

#### Certifications

OVHcloud AI leads with 5/5 vs 3/5.

●LangSmith (LangChain) (3/5): SOC 2 Type II certification. Appropriate for a developer tooling company. ISO 27001 would strengthen the posture for enterprise regulated-industry procurement.

●OVHcloud AI (5/5): ISO 27001, ISO 27017, ISO 27018, SOC 2 Type II, HDS (healthcare data hosting), and SecNumCloud qualification. Among the most comprehensively certified European cloud providers. HDS makes OVHcloud suitable for French healthcare AI workloads.

#### Regulatory Fit

OVHcloud AI leads with 5/5 vs 2/5.

●LangSmith (LangChain) (2/5): Cloud product requires GDPR transfer mechanisms for EU personal data in traces. Self-hosted LangSmith Enterprise is the appropriate deployment for EU regulated industries. Open-source framework usage is unrestricted.

●OVHcloud AI (5/5): Maximum regulatory fit for European organisations. SecNumCloud for French public sector and defence-adjacent workloads. HDS for healthcare. GDPR-native design. NIS2-aligned operational resilience. The strongest sovereignty profile of any managed AI infrastructure provider.

Certifications at a Glance

Certification	LangSmith (LangChain)	OVHcloud AI
HDS	No	Yes
ISO 27001	No	Yes
ISO 27017	No	Yes
ISO 27018	No	Yes
SOC 2 Type II	Yes	Yes
SecNumCloud	No	Yes

Overall Verdict

OVHcloud AI has a clear trust advantage, scoring 25/25 compared to LangSmith (LangChain)'s 13/25. OVHcloud AI particularly excels in data residency, legal jurisdiction, data retention & training, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, LangSmith (LangChain) or OVHcloud AI?

LangSmith (LangChain) has a TrustKit score of 13/25 while OVHcloud AI scores 25/25. OVHcloud AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do LangSmith (LangChain) and OVHcloud AI compare on data residency?

LangSmith (LangChain) scores 2/5 for data residency (Cloud product processes trace data (including prompts and LLM outputs) in US infrastructure. Self-hosted LangSmith Enterprise enables EU data residency. Open-source LangChain framework can run fully on-premise.), while OVHcloud AI scores 5/5 (Exclusively European data centres with full EU sovereign cloud capabilities. SecNumCloud-qualified infrastructure for highest-sensitivity French public sector requirements. Multiple EU country options (France, Germany, UK, Poland). Maximum data residency score.).

Are LangSmith (LangChain) and OVHcloud AI GDPR compliant?

Both tools are assessed across five compliance dimensions. LangSmith (LangChain) has a regulatory fit score of 2/5 and OVHcloud AI scores 5/5. Check the full comparison above for a detailed breakdown.

Explore Each Tool

LangSmith (LangChain)