— Data Tool

Milvus

Last updated 2026-07-10 · Reviewed by ToolForge Editorial

The open-source vector database engineered for billion-scale embedding search and RAG.

★ 4.5/5 · 10K+ teams · Since 2019 · Self-host free
Free Open source
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Vectors at planetary scale

Milvus is the battle-tested open-source vector DB behind some of the largest embedding deployments on earth. It supports multiple index types, hybrid search, and ten-billion-scale collections, with a managed Zilliz Cloud for teams that don't want to run it themselves.

Who it's for: Enterprises and platforms building RAG and similarity search at very large scale.

Key features

🪐 Massive scale

Billions of vectors, distributed.

🔎 Hybrid search

Dense, sparse, and metadata filters.

🧩 Many indexes

Pick the right trade-off per use case.

☁️ Zilliz Cloud

Fully managed option.

The honest take

✓ What works

  • Proven at huge scale
  • Truly open source
  • Flexible indexing
  • Strong community

✗ What doesn't

  • Ops-heavy to self-host
  • Steeper learning curve
  • Smaller managed feature set than some
  • Tuning takes expertise

Verdict

When your vector needs outgrow a starter store, Milvus is the open-source standard. Self-host for control or use Zilliz for convenience.

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Try Milvus today

Free Open source · Self-host free

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