Milvus vs Vespa
Milvus: Cloud-native, distributed open-source vector database built for billions of vectors. Vespa: Big-data serving engine for search, recommendation and RAG with tensors and ML ranking.
key differences
- Milvus is primarily a vector database; Vespa is search engine.
- Transactions: Milvus offers none ACID; Vespa offers limited.
- Only Milvus has change data capture, role-based access.
- Only Vespa has geospatial.
- Milvus can run embedded in your application process.
choose milvus for
- +Billion-scale semantic and image search
- +RAG platforms serving many teams
- +Recommendation and deduplication
- +Multimodal retrieval over lakehouse data
best at · Vector search, RAG, Search
choose vespa for
- +Large-scale hybrid search and RAG retrieval
- +Recommendation and personalization feeds
- +Ad serving and ranking
- +E-commerce search with learned ranking
best at · Search, Vector search, RAG
Milvus vs Vespa: FAQ
What is the difference between Milvus and Vespa?
Milvus: Cloud-native, distributed open-source vector database built for billions of vectors. Vespa: Big-data serving engine for search, recommendation and RAG with tensors and ML ranking. Milvus is primarily a vector database; Vespa is search engine. Transactions: Milvus offers none ACID; Vespa offers limited. Only Milvus has change data capture, role-based access.
When should I choose Milvus over Vespa?
Choose Milvus for billion-scale semantic and image search; RAG platforms serving many teams; and recommendation and deduplication. Choose Vespa for large-scale hybrid search and RAG retrieval; recommendation and personalization feeds; and ad serving and ranking.
Is Milvus or Vespa more popular?
Milvus ranks #35 on the WhichDB Score (45.9/100) and Vespa ranks #127 (23.8/100). Popularity is not fit: check the requirements that matter for your project.
Are Milvus and Vespa open source?
Yes. Milvus is open source. License: Apache License 2.0. Yes. Vespa is open source. License: Apache License 2.0.