AI Vendor Comparison
Which AI tool is safest for your use case? Compare ChatGPT, Claude, Gemini, and Copilot on privacy, data handling, and compliance.
Last updated April 2026. Vendor policies change — always verify with the vendor's current DPA and privacy policy. This comparison is for informational purposes only.
| Criteria | 🟣 Claude Anthropic | 🟢 ChatGPT OpenAI | 🔵 Gemini Google DeepMind | 🟦 Microsoft Copilot Microsoft |
|---|---|---|---|---|
| GDPR DPA Available | ||||
| Trains on Your Data | Opt-in | Enterprise | ||
| Data Retention | 30 days (API); No training on API data | 30 days; Enterprise: configurable | Workspace: 0 days; Consumer: 18 months | M365: 30 days; Enterprise: configurable |
| SOC 2 Certified | ||||
| EU Data Residency | Enterprise | |||
| Zero Data Retention Option | API only | Enterprise | Enterprise | Enterprise |
| HIPAA BAA | Enterprise | Enterprise | Enterprise | |
| EU AI Act Classification | GP-AI | GP-AI | GP-AI | GP-AI |
🟣
Claude
Anthropic
Best data handling. Does not train on API data by default. No EU data residency yet.
🟢
ChatGPT
OpenAI
DPA available. Enterprise plan offers EU data residency and zero data retention. Consumer accounts train by default unless opted out.
🔵
Gemini
Google DeepMind
Google Workspace users get strong data protections. Consumer accounts have weaker privacy. EU data centers available for Workspace.
🟦
Microsoft Copilot
Microsoft
Best for enterprises already on Microsoft 365. EU Data Boundary product available. HIPAA BAA available. Does not train on tenant data.
Recommendations by Use Case
Customer support with personal data
→ Claude or Copilot
No training on data by default. Claude: DPA available. Copilot: HIPAA BAA, M365 integration.
Healthcare / Medical information
→ Microsoft Copilot
HIPAA BAA available, EU data residency, no training on tenant data, M365 ecosystem.
Financial services
→ ChatGPT Enterprise or Copilot
SOC 2, DPA, configurable data retention, DORA readiness for EU financial firms.
EU-based businesses (GDPR)
→ Gemini Workspace or Copilot
Both offer EU data residency. Gemini: Google Cloud EU region. Copilot: EU Data Boundary.
Legal documents / confidential work
→ Claude API
Zero data retention on API, no training on API data, 30-day max retention.
General business use (SME)
→ Claude or ChatGPT
Easy DPA setup. Claude does not train on API data. ChatGPT: widely adopted, strong audit trail.
ComplianceIQ provides informational guidance only. Always verify vendor policies directly. Not legal advice. Back to Tools