milvus vs weaviate

Common questions

What is the difference between milvus and weaviate?

milvus: Milvus is a high-performance, cloud-native vector database for scalable vector ANN search. weaviate: An open-source vector database for vector search and structured filtering. See the comparison table for live GitHub stats and shared categories.

When should I choose milvus over weaviate?

Choose milvus over weaviate when License: milvus is Apache-2.0, weaviate is Other; Milvus is designed to be self-hosted and can be deployed in a cloud-native environment; Pricing: Milvus is free to use under the Apache-2.0 license, but additional services or support may come at a cost.; Requirements: Min 4 GB RAM; Requires Docker; Third-party dependencies must be installed before using Milvus.; Milvus is built with Go and requires a Go environment to run.; Weaviate and Milvus both offer scalable vector databases for semantic search but approach the solution with different technologies and use cases; Tags unique to milvus: anns, cloud-native, diskann, distributed; When you need a high-performance vector database that supports scalable approximate nearest neighbor search.

When should I choose weaviate over milvus?

Choose weaviate over milvus when License: weaviate is Other, milvus is Apache-2.0; Weaviate and Milvus both offer scalable vector databases for semantic search but approach the solution with different technologies and use cases; Tags unique to weaviate: approximate-nearest-neighbor-search, grpc, hnsw, hybrid-search; When you need a vector database that supports both vector search and structured filtering, as Weaviate uniquely combines these capabilities.

When should I avoid milvus?

If your project does not require vector similarity search or approximate nearest neighbor search capabilities. When the project is not cloud-native and does not benefit from cloud-native optimizations. If the project's requirements are better met by a non-vector database or a different type of database. When the specific indexing techniques and performance characteristics of Milvus do not align with your project's needs.

When should I avoid weaviate?

If your project strictly requires a proprietary solution, Weaviate, being open-source under the BSD 3-Clause License, may not be the best fit. If your application does not require vector search or structured filtering, Weaviate's specialized capabilities might be overkill. For teams that prefer a different programming language, Weaviate is primarily developed in Go, which might not align with all development environments.

Is milvus or weaviate more popular on GitHub?

milvus has more GitHub stars (46,152 vs 16,819). Stars measure visibility, not whether either tool fits your constraints.

Are milvus and weaviate open source?

Yes - both are open-source projects on GitHub (milvus: Apache-2.0, weaviate: Other).

Where can I find alternatives to milvus or weaviate?

GraphCanon lists graph-backed alternatives at milvus alternatives and weaviate alternatives (milvus markdown twin, weaviate markdown twin), ranked by typed relationship edges rather than popularity votes.

Is there a machine-readable version of this comparison?

Yes. The markdown twin at this comparison mirrors this page for agents and LLM crawlers, with the same stats table and FAQ answers.

Which is better maintained, milvus or weaviate?

milvus: Very active. weaviate: Very active. Compare maintenance labels, days since push, and release cadence in the trust section below - stars alone do not measure maintenance.

Where are the full trust reports for milvus and weaviate?

GraphCanon publishes per-repo trust reports with dated maintenance, provenance, and scan summaries: milvus trust report; weaviate trust report.