Alternatives to Milvus
Milvus and 3 alternative tools evaluated on the Tekai technology radar.
Milvus
SubjectApache-2.0 distributed vector database for billion-scale similarity search, built for cloud-native Kubernetes deployment with GPU acceleration, multiple index types (HNSW, DiskANN, IVF), and sparse+dense hybrid search; the leading open-source vector database at 44k+ GitHub stars.
Alternatives
Weaviate
Vector database supporting hybrid vector-keyword search, automatic vectorization, and multi-tenancy for AI-native applications.
ChromaDB
Open-source AI-native vector database designed for prototyping and RAG applications, with a 2025 Rust-core rewrite adding hybrid search and a managed cloud offering; widely used but not designed for 50M+ vector production workloads.
Zilliz Cloud
Fully managed vector database service built on Milvus, operated by Zilliz with enterprise-grade SLA (99.95%), SOC 2 Type II, HIPAA-readiness, and a proprietary Cardinal search engine delivering performance improvements beyond open-source Milvus.
Comparison Summary
| Tool | Radar | Type | License |
|---|---|---|---|
| Milvus | trial | open-source | Apache-2.0 |
| Weaviate | assess | vendor | BSL-1.1 |
| ChromaDB | trial | open-source | Apache-2.0 |
| Zilliz Cloud | trial | vendor | Commercial |