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Best Vector Databases & RAG Infrastructure for enterprise teams

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Crail tracks 6 Vector Databases & RAG Infrastructure vendors that list enterprise teams as a fit. These are the 5 that rank highest once the list is weighted for enterprise teams, and each one is shown with compliance evidence, deployment control and data residency — the facts that decide the shortlist at this size, rather than the same summary on every page.

How this list is weighted for enterprise teams

  • 60% of the vendor's Crail agent-readiness score
  • up to 24 points for published compliance certifications (8 per certification)
  • 10 points for documented SSO/SAML support
  • 6 points for a documented audit log

Startups and small businesses share the price-and-self-serve weighting; midmarket and enterprise share the compliance weighting. The full rules are on the methodology page.

Best overall: MongoDB Atlas Vector Search

Most certifications published: MongoDB Atlas Vector Search

1. MongoDB Atlas Vector Search90/100 agent-readiness

Native vector search built into MongoDB Atlas, letting teams store operational data, metadata, and vector embeddings in one place.

  • Certifications: SOC 2 Type II, ISO 27001:2022, ISO 9001, ISO 27017, ISO 27018, HIPAA, PCI DSS, GDPR, HITRUST, FedRAMP, CSA STAR
  • Deployment: cloud, self-hosted, on-prem, hybrid
  • Data residency: 125+ Atlas regions across AWS/GCP/Azure
  • SSO/SAML: yes. Audit log: yes. Pentest report: yes

2. Qdrant85/100 agent-readiness

Open-source, Rust-built vector database and search engine for RAG and AI apps, available self-hosted or via managed Qdrant Cloud.

  • Certifications: SOC 2, HIPAA, GDPR-aligned
  • Deployment: cloud, self-hosted, hybrid, on-prem
  • Data residency: US, EU
  • SSO/SAML: yes. Audit log: yes. Pentest report: not publicly documented

3. Zilliz Cloud85/100 agent-readiness

Fully managed cloud database built on open-source Milvus for large-scale vector search and RAG/AI workloads.

  • Certifications: SOC 2, ISO 27001, HIPAA, GDPR
  • Deployment: cloud, self-hosted, BYOC
  • Data residency: AWS/GCP/Azure regional selection at cluster creation
  • SSO/SAML: yes. Audit log: yes. Pentest report: not publicly documented

4. Pinecone81/100 agent-readiness

Fully-managed, serverless vector database with usage-based pricing for building AI search, RAG, and recommendation applications at scale.

  • Certifications: SOC 2 Type II, ISO/IEC 27001:2022, HIPAA, GDPR, CCPA
  • Deployment: cloud, BYOC
  • Data residency: US, EU
  • SSO/SAML: yes. Audit log: yes. Pentest report: yes

5. Weaviate82/100 agent-readiness

Open-source AI-native vector database with built-in hybrid search and multi-tenancy, usable self-hosted or via managed Weaviate Cloud.

  • Certifications: SOC 2 Type II, HIPAA (Enterprise Cloud)
  • Deployment: cloud, self-hosted, hybrid, on-prem
  • Data residency: US, EU
  • SSO/SAML: yes. Audit log: not publicly documented. Pentest report: not publicly documented

FAQ

How is this Vector Databases & RAG Infrastructure ranking calculated for enterprise teams?

This is not the raw agent-readiness leaderboard. Crail scores the 6 Vector Databases & RAG Infrastructure vendors it tracks that fit enterprise teams, using 60% of the vendor's Crail agent-readiness score; up to 24 points for published compliance certifications (8 per certification); 10 points for documented SSO/SAML support; 6 points for a documented audit log. MongoDB Atlas Vector Search ranks first on both measures: it holds the highest raw agent-readiness score on this list (90/100) and the top score once the enterprise teams weighting is applied.

Which of these can run inside our own cloud or data center?

MongoDB Atlas Vector Search (cloud, self-hosted, on-prem, hybrid), Qdrant (cloud, self-hosted, hybrid, on-prem), Zilliz Cloud (cloud, self-hosted, BYOC), Pinecone (cloud, BYOC) and Weaviate (cloud, self-hosted, hybrid, on-prem) document deployment outside the vendor's own cloud. Data-residency options are published by MongoDB Atlas Vector Search (125+ Atlas regions across AWS/GCP/Azure), Qdrant (US, EU), Zilliz Cloud (AWS/GCP/Azure regional selection at cluster creation), Pinecone (US, EU) and Weaviate (US, EU).

What compliance certifications do these vendors publish?

MongoDB Atlas Vector Search: SOC 2 Type II, ISO 27001:2022, ISO 9001, ISO 27017, ISO 27018, HIPAA, PCI DSS, GDPR, HITRUST, FedRAMP, CSA STAR. Qdrant: SOC 2, HIPAA, GDPR-aligned. Zilliz Cloud: SOC 2, ISO 27001, HIPAA, GDPR. Pinecone: SOC 2 Type II, ISO/IEC 27001:2022, HIPAA, GDPR, CCPA. Weaviate: SOC 2 Type II, HIPAA (Enterprise Cloud).