product
Data quality: Editorially ReviewedFree
Retrieval & data layer
Vector Databases
Software & technology
Workflow orchestration
Self-hosted / on-premises
SaaS (vendor-hosted)
Retrieval & semantic search
OpenSearch Vector Engine
Vector Databases
Overview
OpenSearch Vector Engine is an open-source search platform with an optimized engine for storing vector embeddings and performing approximate nearest-neighbor search. It supports k-NN search with multiple algorithms including HNSW, IVF, and Annoy, and provides hybrid search combining vector similarity with full-text search.
- Pricing model
- Free
- Deployment
- SaaS (vendor-hosted), Self-hosted / on-premises
- Regions served
- Global
- Categories
- Free, Retrieval & data layer, Vector Databases, Software & technology, Workflow orchestration, Self-hosted / on-premises, SaaS (vendor-hosted), Retrieval & semantic search
- Last updated
- 2 October 2026
- Published
- 2 October 2026
Use cases
Workflow orchestration
Deployment options
SaaS (vendor-hosted)
Self-hosted / on-premises
Data sources & provenance
Where this information came from, how it was checked and when it was last looked at. “Last updated” records a change to the record — it does not mean the record was verified.
- Data quality
- Data quality: Editorially Reviewed
- Primary source
- opensearch.org
- Sources cited
- 2
- Last reviewed
- 28 September 2026
- Last updated
- 2 October 2026
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Anyone can suggest a correction — you don't need an account. An editor checks every suggestion against the sources before the record changes.