Milvus vs SingleStore (2026)
Updated February 28, 2026
Overview
Milvus is an open-source vector database built for scalable similarity search, capable of handling billions of vectors. Backed by the Zilliz company, Milvus supports multiple index types (IVF, HNSW, DiskANN), GPU-accelerated search, and multi-tenancy. Zilliz Cloud offers a fully managed version with automatic scaling. Milvus is widely used in enterprise deployments requiring high-throughput vector search at scale.
SingleStore is a distributed SQL database with built-in vector search capabilities.
Key features
Core capabilities each platform advertises.
- Billion-scale vector search
- GPU-accelerated indexing
- Distributed architecture
- Multiple index types
- Cloud and self-hosted options
Strengths and tradeoffs
What each tool does well, and the limitations to keep in mind.
Pros
- Extreme scalability handling billions of vectors in distributed environments
- Fully open-source under Apache 2.0 with no vendor lock-in
- Hybrid search combining dense and sparse vectors in single queries
- Rich index flexibility with IVF, HNSW, DiskANN and GPU acceleration
- Managed cloud option reduces DevOps burden with auto-scaling
Cons
- Complex distributed architecture requiring Kubernetes for production
- Steep learning curve for index tuning and deployment configuration
- High memory and storage requirements for large datasets
- No in-place vector updates requiring delete and re-insert workarounds
Pros
- Unified platform combining transactional, analytical, and vector workloads
- Co-located vector data with relational data for powerful SQL queries
- Multiple vector index types (FLAT, IVF_FLAT, IVF_PQ, HNSW_FLAT, HNSW_PQ)
- MySQL and MongoDB wire protocol compatibility for easy integration
- Proven at scale with 100+ Fortune 500 customers
Cons
- More complex than dedicated vector databases for pure vector search use cases
- Pricing not transparently published
- May have higher learning curve for teams unfamiliar with distributed SQL
- Recent acquisition may lead to product changes
Milvus or SingleStore — which should you choose?
Choose Milvus if you wantChoose if you want
- Billion-vector similarity search
- Large-scale recommendation systems
- Image and video retrieval
- Genomics and scientific computing
- Enterprise-scale RAG systems
Choose SingleStore if you wantChoose if you want
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