Cohere

Enterprise AI platform with a strong data privacy commitment and flexible deployment including on-premises

Lumo (Proton)

Privacy-first AI assistant from the makers of ProtonMail, with Swiss jurisdiction and zero-access encryption

Cohere

Excellent

24/25

Lumo (Proton)

Excellent

23/25

Score Breakdown

DimensionCohereLumo (Proton)

Data Residency

Where is your data stored and processed?

Cohere: Supports deployment on AWS, Azure, and GCP in multiple regions; on-premises and air-gapped deployments available for maximum data sovereignty

Lumo (Proton): Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.

5/5

Supports deployment on AWS, Azure, and GCP in multiple regions; on-premises and air-gapped deployments available for maximum data sovereignty

5/5

Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.

Legal Jurisdiction

Which laws govern the company and your data?

Cohere: Canadian incorporation under Ontario law provides a favourable jurisdiction relative to US-headquartered competitors; Canadian PIPEDA applies; GDPR DPA available; not subject to US CLOUD Act

Lumo (Proton): Swiss incorporation provides one of the strongest privacy jurisdictions globally. Outside US CLOUD Act reach. Swiss FADP and GDPR adequacy. Proton has a decade-long track record of defending user privacy.

4/5

Canadian incorporation under Ontario law provides a favourable jurisdiction relative to US-headquartered competitors; Canadian PIPEDA applies; GDPR DPA available; not subject to US CLOUD Act

5/5

Swiss incorporation provides one of the strongest privacy jurisdictions globally. Outside US CLOUD Act reach. Swiss FADP and GDPR adequacy. Proton has a decade-long track record of defending user privacy.

Data Retention & Training

Is your data used for model training?

Cohere: Hard commitment that customer data is never used to train foundational models across all tiers by default; data retention fully configurable; private deployment eliminates third-party data sharing

Lumo (Proton): Zero-access encryption on conversations. User data explicitly never used for model training. Open-source code enables independent verification of privacy claims.

5/5

Hard commitment that customer data is never used to train foundational models across all tiers by default; data retention fully configurable; private deployment eliminates third-party data sharing

5/5

Zero-access encryption on conversations. User data explicitly never used for model training. Open-source code enables independent verification of privacy claims.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Cohere: SOC 2 Type II, ISO 27001, and ISO 42001 (AI management systems) certified; annual SOC 2 audits; Trust Centre available for documentation requests

Lumo (Proton): ISO 27001 and SOC 2 at Proton AG organisational level. Strong for a consumer-facing privacy product. ISO 27701 would further strengthen the posture.

5/5

SOC 2 Type II, ISO 27001, and ISO 42001 (AI management systems) certified; annual SOC 2 audits; Trust Centre available for documentation requests

4/5

ISO 27001 and SOC 2 at Proton AG organisational level. Strong for a consumer-facing privacy product. ISO 27701 would further strengthen the posture.

Regulatory Fit

Suitability for regulated industries and professional services

Cohere: On-premises deployment, Canadian jurisdiction, ISO 42001 certification, no training on customer data, and HIPAA compliance make Cohere one of the strongest compliance postures among AI platforms

Lumo (Proton): Excellent fit for privacy-sensitive professionals in legal and financial services. Swiss jurisdiction, zero-access encryption, and no training on user data address key regulatory concerns. Not EU-incorporated but GDPR adequate.

5/5

On-premises deployment, Canadian jurisdiction, ISO 42001 certification, no training on customer data, and HIPAA compliance make Cohere one of the strongest compliance postures among AI platforms

4/5

Excellent fit for privacy-sensitive professionals in legal and financial services. Swiss jurisdiction, zero-access encryption, and no training on user data address key regulatory concerns. Not EU-incorporated but GDPR adequate.

Total Score

24/25

23/25

Best For

Cohere

Best for organisations requiring broad certification coverage (SOC 2 Type II, ISO 27001, ISO 42001); privacy-conscious teams who need strong data retention controls; organisations that need self-hosted or on-premise deployment; teams on a tight budget.

Lumo (Proton)

Best for EU-headquartered organisations needing maximum data sovereignty; regulated industries (legal, financial-services); 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

Cohere vs Lumo (Proton): Trust & Compliance Comparison

Cohere (Cohere, CA) scores 24/25 overall with a Gold (Excellent) trust badge. Enterprise AI platform with a strong data privacy commitment and flexible deployment including on-premises. Lumo (Proton) (Proton, CH) scores 23/25 with a Gold (Excellent) trust badge. Privacy-first AI assistant from the makers of ProtonMail, with Swiss jurisdiction and zero-access encryption.

Dimension-by-Dimension Breakdown

#### Data Residency

Both score equally at 5/5.

●Cohere (5/5): Supports deployment on AWS, Azure, and GCP in multiple regions; on-premises and air-gapped deployments available for maximum data sovereignty

●Lumo (Proton) (5/5): Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.

#### Legal Jurisdiction

Lumo (Proton) leads with 5/5 vs 4/5.

●Cohere (4/5): Canadian incorporation under Ontario law provides a favourable jurisdiction relative to US-headquartered competitors; Canadian PIPEDA applies; GDPR DPA available; not subject to US CLOUD Act

●Lumo (Proton) (5/5): Swiss incorporation provides one of the strongest privacy jurisdictions globally. Outside US CLOUD Act reach. Swiss FADP and GDPR adequacy. Proton has a decade-long track record of defending user privacy.

#### Data Retention & Training

Both score equally at 5/5.

●Cohere (5/5): Hard commitment that customer data is never used to train foundational models across all tiers by default; data retention fully configurable; private deployment eliminates third-party data sharing

●Lumo (Proton) (5/5): Zero-access encryption on conversations. User data explicitly never used for model training. Open-source code enables independent verification of privacy claims.

#### Certifications

Cohere leads with 5/5 vs 4/5.

●Cohere (5/5): SOC 2 Type II, ISO 27001, and ISO 42001 (AI management systems) certified; annual SOC 2 audits; Trust Centre available for documentation requests

●Lumo (Proton) (4/5): ISO 27001 and SOC 2 at Proton AG organisational level. Strong for a consumer-facing privacy product. ISO 27701 would further strengthen the posture.

#### Regulatory Fit

Cohere leads with 5/5 vs 4/5.

●Cohere (5/5): On-premises deployment, Canadian jurisdiction, ISO 42001 certification, no training on customer data, and HIPAA compliance make Cohere one of the strongest compliance postures among AI platforms

●Lumo (Proton) (4/5): Excellent fit for privacy-sensitive professionals in legal and financial services. Swiss jurisdiction, zero-access encryption, and no training on user data address key regulatory concerns. Not EU-incorporated but GDPR adequate.

Certifications at a Glance

Certification	Cohere	Lumo (Proton)
ISO 27001	Yes	Yes
ISO 42001	Yes	No
SOC 2	No	Yes
SOC 2 Type II	Yes	No

Overall Verdict

Cohere and Lumo (Proton) are closely matched on trust and compliance, with scores of 24/25 and 23/25 respectively. The right choice depends on your specific regulatory requirements and existing technology stack.

Frequently Asked Questions

Which is better for EU compliance, Cohere or Lumo (Proton)?

Cohere has a TrustKit score of 24/25 while Lumo (Proton) scores 23/25. Cohere currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Cohere and Lumo (Proton) compare on data residency?

Cohere scores 5/5 for data residency (Supports deployment on AWS, Azure, and GCP in multiple regions; on-premises and air-gapped deployments available for maximum data sovereignty), while Lumo (Proton) scores 5/5 (Data hosted in Proton's own data centres in Germany and Norway. Zero-access encryption means even Proton cannot read conversation content. No US infrastructure dependency.).

Are Cohere and Lumo (Proton) GDPR compliant?

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

Explore Each Tool