Milvus
The heavy-scale distributed choice — billions of vectors, Apache-2.0.
88
sovereigntyMilvus is a cloud-native, distributed vector database under the LF AI & Data Foundation, licensed Apache-2.0 and developed by Zilliz. It is engineered for the top end of scale — billions of vectors, horizontal scaling, tiered storage — with a managed option (Zilliz Cloud) when you want the same engine without the Kubernetes homework. If your vector workload is genuinely huge, this is the open-source engine built for it.
OPEN SOURCEApache-2.0SELF-HOST
LicenseApache-2.0
PricingFree self-hosted (Apache-2.0); Zilliz Cloud managed tiers incl. a free tier
Open sourceYes
Self-hostableYes
Local-first dataNo
What it does well
- +Proven at billion-vector scale, horizontally scalable
- +LF AI & Data governance — not a single-vendor project
- +Managed escape hatch (Zilliz Cloud) with the same engine
Where it falls short
- −Distributed architecture = real operational complexity self-hosted
- −Overkill for small and mid-size workloads
Milvus as an alternative to
Where Milvus shows up in our comparisons, and how it ranked.
Milvus head-to-head
Straight comparisons against the tools people weigh it against.