Elasticsearch / OpenSearch
Search platforms that can combine keyword, vector, and hybrid search patterns for RAG retrieval.
- Main use case
- Hybrid retrieval when teams already use search infrastructure.
- Open source
- Partly open source
- Self-hosting
- Yes
- Cloud
- Yes
- Pricing note
- Verify product-specific pricing and licensing from official sources.
- Target users
- search teams, enterprises, developers
Strengths
- Strong keyword and filtering capabilities
- Hybrid search patterns
- Enterprise search familiarity
Limitations
- Vector search setup requires careful tuning
- Licensing and product differences must be verified
How to evaluate this tool
- Test Elasticsearch / OpenSearch with a small representative corpus.
- Verify official documentation, pricing, licensing, and deployment options.
- Measure retrieval quality, latency, and operational complexity.
- Check whether the team can maintain ingestion, updates, logs, and evaluation.