OpenSearch
FreeOpen-source search and analytics engine with k-NN vector search support.
Tool Info
Categories
Vector DBs
Developer
OpenSearch Project
License
Open Source
Official Website
Repository
Overview
OpenSearch adds vector k-NN capabilities to a proven distributed search engine.
Teams can combine lexical and semantic retrieval in one cluster.
Common in AWS environments and log-heavy architectures.
Features
- k-NN vector search
- Full-text search
- Aggregations
- Managed AWS offering
Pricing
Free tier available
Free (open source)Managed (AWS, etc.)
Pros
- Mature search engine
- Hybrid retrieval built-in
- Large-scale proven
Best For
Hybrid keyword + vector searchLog analytics + embeddingsAWS-native search
When NOT to Use
- Operational complexity self-hosted
- JVM resource requirements
Typical Users
Search engineersData platform teamsAWS users
Related Tools
Alternatives
Related Architecture Guides
Tags
#vector-db#search#open-source
Related Guides
- Vector Databases
Purpose-built databases for storing, indexing, and querying embedding vectors at scale.
- Hybrid Search
Combine keyword and semantic search for more accurate and comprehensive information retrieval.
- Semantic Search
Learn how AI understands the meaning behind queries to find relevant results beyond keyword matching.
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