Elasticsearch
Search engine with dense, sparse and hybrid vector retrieval.
The widely deployed search engine now supports dense kNN, learned sparse retrieval (ELSER), hybrid ranking and semantic reranking for RAG.
- Vendor
- Elastic
- Category
- Vector databases
- Pricing
- Freemium
- Open source
- Yes
- Platforms
- Cloud, Self-host
- Launched
- 2010
- Website
- elastic.co/elasticsearch
Features
- Hybrid BM25 + vector
- Sparse retrieval (ELSER)
- Reranking
Best for
- Enterprise
- Research
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