Milvus / Zilliz

Partial info

Scalable open-source vector database for billion-scale search.

Milvus is an Apache-2.0 vector database built for very large scale, with multiple index types and GPU acceleration. Zilliz Cloud is the managed version from the same team.

License

Open source (Apache-2.0)

Deployment

Managed, Self-hosted

Pricing

Open-source; Zilliz Cloud is managed with a free tier and usage-based plans.

SDKs / languages

Python, Java, Go, Node.js

Founded

2019

Strengths

Proven at billion-vector scale
Many index types incl. GPU
Managed Zilliz Cloud option

Limitations

Heavier to self-host (distributed)
Operational complexity at scale

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pgvector

Pinecone

Fully managed, serverless vector database.

Qdrant

Fast open-source vector search engine written in Rust.

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Facts verified 19 July 2026. Neutral summary, not an endorsement; verify current details with the vendor.