Leonardo AI

Australian AI platform for high-quality image and video generation with fine-tuning

Stability AI

Open-source AI for image, audio, and video generation

Leonardo AI

Caution

9/25

Stability AI

Strong

17/25

Score Breakdown

DimensionLeonardo AIStability AI

Data Residency

Where is your data stored and processed?

Leonardo AI: US-only infrastructure on AWS; no EU data residency option; Australian company with US hosting

Stability AI: UK-based hosting with open-source models that can be fully self-hosted. Organizations can run Stable Diffusion entirely on their own infrastructure for complete data control.

1/5

US-only infrastructure on AWS; no EU data residency option; Australian company with US hosting

4/5

UK-based hosting with open-source models that can be fully self-hosted. Organizations can run Stable Diffusion entirely on their own infrastructure for complete data control.

Legal Jurisdiction

Which laws govern the company and your data?

Leonardo AI: Australian Pty Ltd with US infrastructure; CLOUD Act and CISA data sharing framework applies

Stability AI: UK entity subject to UK data protection laws (UK GDPR). Post-Brexit, the UK maintains adequate data protection standards recognized by the EU.

2/5

Australian Pty Ltd with US infrastructure; CLOUD Act and CISA data sharing framework applies

4/5

UK entity subject to UK data protection laws (UK GDPR). Post-Brexit, the UK maintains adequate data protection standards recognized by the EU.

Data Retention & Training

Is your data used for model training?

Leonardo AI: Paid tiers excluded from model training; user owns generated content; free tier terms less clear

Stability AI: API usage subject to standard data policies. Self-hosted deployments provide complete data control with no data leaving the organization's infrastructure.

3/5

Paid tiers excluded from model training; user owns generated content; free tier terms less clear

4/5

API usage subject to standard data policies. Self-hosted deployments provide complete data control with no data leaving the organization's infrastructure.

Certifications

ISO 27001, SOC 2, Cyber Essentials, etc.

Leonardo AI: No ISO 27001 or SOC 2 certifications published as of early 2026

Stability AI: Limited formal certifications. The company's open-source approach means many users self-host, reducing reliance on Stability AI's own infrastructure security.

1/5

No ISO 27001 or SOC 2 certifications published as of early 2026

2/5

Limited formal certifications. The company's open-source approach means many users self-host, reducing reliance on Stability AI's own infrastructure security.

Regulatory Fit

Suitability for regulated industries and professional services

Leonardo AI: US hosting and lack of certifications limits EU regulated-sector suitability; fine for creative use

Stability AI: Good fit for organizations that can self-host. UK jurisdiction provides reasonable regulatory alignment with EU standards. Limited enterprise compliance certifications.

2/5

US hosting and lack of certifications limits EU regulated-sector suitability; fine for creative use

3/5

Good fit for organizations that can self-host. UK jurisdiction provides reasonable regulatory alignment with EU standards. Limited enterprise compliance certifications.

Total Score

9/25

17/25

Best For

Leonardo AI

Best for teams on a tight budget.

Stability AI

Best for EU-headquartered organisations needing maximum data sovereignty; 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

Leonardo AI vs Stability AI: Trust & Compliance Comparison

Leonardo AI (Leonardo AI, AU) scores 9/25 overall with a Review Required (Caution) trust badge. Australian AI platform for high-quality image and video generation with fine-tuning. Stability AI (Stability AI, GB) scores 17/25 with a Silver (Strong) trust badge. Open-source AI for image, audio, and video generation.

Dimension-by-Dimension Breakdown

#### Data Residency

Stability AI leads with 4/5 vs 1/5.

●Leonardo AI (1/5): US-only infrastructure on AWS; no EU data residency option; Australian company with US hosting

●Stability AI (4/5): UK-based hosting with open-source models that can be fully self-hosted. Organizations can run Stable Diffusion entirely on their own infrastructure for complete data control.

#### Legal Jurisdiction

Stability AI leads with 4/5 vs 2/5.

●Leonardo AI (2/5): Australian Pty Ltd with US infrastructure; CLOUD Act and CISA data sharing framework applies

●Stability AI (4/5): UK entity subject to UK data protection laws (UK GDPR). Post-Brexit, the UK maintains adequate data protection standards recognized by the EU.

#### Data Retention & Training

Stability AI leads with 4/5 vs 3/5.

●Leonardo AI (3/5): Paid tiers excluded from model training; user owns generated content; free tier terms less clear

●Stability AI (4/5): API usage subject to standard data policies. Self-hosted deployments provide complete data control with no data leaving the organization's infrastructure.

#### Certifications

Stability AI leads with 2/5 vs 1/5.

●Leonardo AI (1/5): No ISO 27001 or SOC 2 certifications published as of early 2026

●Stability AI (2/5): Limited formal certifications. The company's open-source approach means many users self-host, reducing reliance on Stability AI's own infrastructure security.

#### Regulatory Fit

Stability AI leads with 3/5 vs 2/5.

●Leonardo AI (2/5): US hosting and lack of certifications limits EU regulated-sector suitability; fine for creative use

●Stability AI (3/5): Good fit for organizations that can self-host. UK jurisdiction provides reasonable regulatory alignment with EU standards. Limited enterprise compliance certifications.

Overall Verdict

Stability AI has a clear trust advantage, scoring 17/25 compared to Leonardo AI's 9/25. Stability AI particularly excels in data residency, legal jurisdiction, data retention & training, certifications, regulatory fit.

Frequently Asked Questions

Which is better for EU compliance, Leonardo AI or Stability AI?

Leonardo AI has a TrustKit score of 9/25 while Stability AI scores 17/25. Stability AI currently rates higher across data residency, legal jurisdiction, data retention, certifications, and regulatory fit.

How do Leonardo AI and Stability AI compare on data residency?

Leonardo AI scores 1/5 for data residency (US-only infrastructure on AWS; no EU data residency option; Australian company with US hosting), while Stability AI scores 4/5 (UK-based hosting with open-source models that can be fully self-hosted. Organizations can run Stable Diffusion entirely on their own infrastructure for complete data control.).

Are Leonardo AI and Stability AI GDPR compliant?

Both tools are assessed across five compliance dimensions. Leonardo AI has a regulatory fit score of 2/5 and Stability AI scores 3/5. Check the full comparison above for a detailed breakdown.

Explore Each Tool