These tools competes with

WeaviatevsMilvus

Cloud-native vector search engine versus Distributed vector database built for scale

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Choose Weaviate when…

  • You want a knowledge graph alongside vector search
  • Multi-modal search (text + image) is needed
  • You need hybrid keyword + vector search

Choose Milvus when…

  • You're running large-scale, high-volume vector search
  • You need a dedicated open-source vector DB for production
  • Billion-scale vector indexing is a requirement

Side-by-side comparison

Field
Weaviate
Milvus
Category
LLM Infrastructure
LLM Infrastructure
Type
Open Source
Open Source
Free Tier
✓ Yes
✓ Yes
Pricing Plans
Cloud: Usage-based
Zilliz Cloud: Usage-based
GitHub Stars
11,000
31,000
Health
80 Active
80 Active

Weaviate

Open-source vector database with hybrid search (vector + BM25), multi-modal support, and native GraphQL API. Strong enterprise adoption.

Milvus

Cloud-native vector database designed for billion-scale similarity search. Powers Zilliz Cloud and used by major enterprises for production RAG.

Shared Connections2 tools both integrate with

Only Weaviate (3)

LangChainLlamaIndexMilvus

Only Milvus (2)

Weaviatepgvector

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