Helicone AI

Open-source LLM observability and monitoring platform for AI applications

deepset (Haystack)

German AI company behind Haystack — the open-source framework for building production RAG and agent applications

Helicone AI

Moderate

14/25

deepset (Haystack)

Excellent

24/25

Score Breakdown

DimensionHelicone AIdeepset (Haystack)

Data Residency

Where is your data stored and processed?

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

deepset (Haystack): EU hosting available for managed platform. On-premises and air-gapped deployments fully supported. Open-source framework runs entirely locally with zero external data flow.

3/5

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

5/5

EU hosting available for managed platform. On-premises and air-gapped deployments fully supported. Open-source framework runs entirely locally with zero external data flow.

Legal Jurisdiction

Which laws govern the company and your data?

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

deepset (Haystack): German GmbH, fully under EU law. Berlin headquarters. No US parent company. Investors include EU and US VCs but corporate governance remains German.

2/5

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

5/5

German GmbH, fully under EU law. Berlin headquarters. No US parent company. Investors include EU and US VCs but corporate governance remains German.

Data Retention & Training

Is your data used for model training?

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.

deepset (Haystack): Terms restrict data use to anonymised system data only. No explicit public 'we don't train' statement, but contractual restrictions are clear. Self-hosted gives full 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.

4/5

Terms restrict data use to anonymised system data only. No explicit public 'we don't train' statement, but contractual restrictions are clear. Self-hosted gives full control.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

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

deepset (Haystack): SOC 2 Type II, ISO 27001, HIPAA, and CSA STAR Level 1. Comprehensive certification suite for enterprise procurement. Third-party DPO (secjur).

2/5

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

5/5

SOC 2 Type II, ISO 27001, HIPAA, and CSA STAR Level 1. Comprehensive certification suite for enterprise procurement. Third-party DPO (secjur).

Regulatory Fit

Suitability for regulated industries and professional services

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

deepset (Haystack): German GmbH with EU hosting, self-hosting option, and strong certifications. One of the best-positioned AI developer tools for EU regulated industries including financial services and healthcare.

3/5

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

5/5

German GmbH with EU hosting, self-hosting option, and strong certifications. One of the best-positioned AI developer tools for EU regulated industries including financial services and healthcare.

Total Score

14/25

24/25

Best For

Helicone AI

Best for EU-headquartered organisations needing maximum data sovereignty; organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, CSA STAR Level 1); 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.

deepset (Haystack)

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.

Detailed Comparison

deepset (Haystack) vs Helicone AI: Trust & Compliance Comparison

deepset (Haystack) (deepset, DE) scores 24/25 overall with a Gold (Excellent) trust badge. German AI company behind Haystack — the open-source framework for building production RAG and agent applications. Helicone AI (Helicone, US) scores 14/25 with a Bronze (Moderate) trust badge. Open-source LLM observability and monitoring platform for AI applications.

Dimension-by-Dimension Breakdown

#### Data Residency

deepset (Haystack) leads with 5/5 vs 3/5.

●deepset (Haystack) (5/5): EU hosting available for managed platform. On-premises and air-gapped deployments fully supported. Open-source framework runs entirely locally with zero external data flow.

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

#### Legal Jurisdiction

deepset (Haystack) leads with 5/5 vs 2/5.

●deepset (Haystack) (5/5): German GmbH, fully under EU law. Berlin headquarters. No US parent company. Investors include EU and US VCs but corporate governance remains German.

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

#### Data Retention & Training

Both score equally at 4/5.

●deepset (Haystack) (4/5): Terms restrict data use to anonymised system data only. No explicit public 'we don't train' statement, but contractual restrictions are clear. Self-hosted gives full control.

●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.

#### Certifications

deepset (Haystack) leads with 5/5 vs 2/5.

●deepset (Haystack) (5/5): SOC 2 Type II, ISO 27001, HIPAA, and CSA STAR Level 1. Comprehensive certification suite for enterprise procurement. Third-party DPO (secjur).

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

#### Regulatory Fit

deepset (Haystack) leads with 5/5 vs 3/5.

●deepset (Haystack) (5/5): German GmbH with EU hosting, self-hosting option, and strong certifications. One of the best-positioned AI developer tools for EU regulated industries including financial services and healthcare.

●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.

Certifications at a Glance

Certification	deepset (Haystack)	Helicone AI
CSA STAR Level 1	Yes	No
ISO 27001	Yes	No
SOC 2 Type II	Yes	No

Overall Verdict

deepset (Haystack) has a clear trust advantage, scoring 24/25 compared to Helicone AI's 14/25. deepset (Haystack) particularly excels in data residency, legal jurisdiction, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Helicone AI or deepset (Haystack)?

Helicone AI has a TrustKit score of 14/25 while deepset (Haystack) scores 24/25. deepset (Haystack) currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Helicone AI and deepset (Haystack) compare on data residency?

Helicone AI scores 3/5 for data residency (Self-host option gives full control over data residency. Cloud version hosted on US infrastructure. Self-hosting enables any region.), while deepset (Haystack) scores 5/5 (EU hosting available for managed platform. On-premises and air-gapped deployments fully supported. Open-source framework runs entirely locally with zero external data flow.).

Are Helicone AI and deepset (Haystack) GDPR compliant?

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

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