OpenSearch
Vector Databases & Retrieval Infrastructure
Last updated · Compiled from public sources with automated enrichment
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Open-source search and analytics suite, an Elasticsearch fork, with vector search.
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- Category
- Vector Databases & Retrieval Infrastructure
- Founded
- 2021
- Status
- Active
- Open source
- Yes
- Pricing
- Free
- Funding stage
- Unknown
- Total raised
- —
- Popularity
- Rising
- Modality
- Infrastructure
- GitHub stars
- —
Relationships
4 of 5 confirmed by two independent sources, 1 under review · 4 backed by a published source.
- Elastic / ElasticsearchOpenSearch is a fork of Elasticsearch.
- MongoDB Atlas Vector SearchMongoDB Atlas Vector Search competes with OpenSearch.
- PineconePinecone competes with OpenSearch in vector databases.
- VespaVespa competes with OpenSearch in vector retrieval.
- pgvectorpgvector integrates with OpenSearch for vector search.
References
Published sources supporting the relationships above.
- pgvector vs OpenSearch for vector databases: 5 differences and how to choose
unknown publisher · supports pgvector integrates with OpenSearch
- hybrid-search-postgres-opensearch-bedrock/genai-hybrid-pgvector-opensearch.ipynb at main · aws-samples/hybrid-search-postgres-opensearch-bedrock · GitHub
unknown publisher · supports pgvector integrates with OpenSearch
- Vector Database Selection on AWS - OpenSearch, Aurora pgvector, MemoryDB, and S3 Vectors with Index Algorithm Internals | hidekazu-konishi.com
unknown publisher · supports pgvector integrates with OpenSearch
- GitHub - flavienbwk/pgvector-opensearch-benchmark: A comparative benchmark of pgvector and OpenSearch clusters for vector comparisons. · GitHub
unknown publisher · supports pgvector integrates with OpenSearch
- MongoDB Atlas Search vs Elasticsearch/OpenSearch: performance, relevance tuning, and operational overhead comparison | Operational Databases (OLTP) | Codeables | Codeables
unknown publisher · supports MongoDB Atlas Vector Search competes with OpenSearch
- Vespa vs OpenSearch: The Ultimate Search Engine Showdown
unknown publisher · supports Vespa competes with OpenSearch
- Ranking 'Best in Class' for Distributed Search Engines | Sirius Open Source
unknown publisher · supports Vespa competes with OpenSearch
- OpenSearch vs Vespa: Vector Database Comparison | Zilliz
unknown publisher · supports Vespa competes with OpenSearch
- OpenSearch vs Vespa (2026)
unknown publisher · supports Vespa competes with OpenSearch
- OpenSearch vs. Vespa | Vergleich der Vektordatenbanken
unknown publisher · supports Vespa competes with OpenSearch
- Pinecone vs OpenSearch | Pinecone
unknown publisher · supports Pinecone competes with OpenSearch
- OpenSearch vs Pinecone (2026)
unknown publisher · supports Pinecone competes with OpenSearch
- Pinecone vs Weaviate vs OpenSearch: Enterprise | Sphere Inc.
unknown publisher · supports Pinecone competes with OpenSearch
- Pinecone vs OpenSearch
They're Not Really Competitors — And That's the Point
unknown publisher · supports Pinecone competes with OpenSearch
News
- Why AWS Gave OpenSearch To The Linux Foundation - ForbesForbes · 9/29/2024
- AWS brings OpenSearch under the Linux Foundation umbrella - TechCrunchTechCrunch · 9/16/2024
More in Vector Databases & Retrieval Infrastructure
- ChromaOpen-source embedding database designed for LLM applications.
- Elastic / ElasticsearchWidely used search engine with vector/hybrid search support.
- LanceDBEmbedded, serverless vector database built on the Lance data format.
- MarqoEnd-to-end vector search engine combining embeddings and retrieval.
- MongoDB Atlas Vector SearchVector search built into MongoDB's managed Atlas platform.
- Neo4jLeading graph database, also supports vector indexes for GraphRAG.
- PineconeManaged vector database purpose-built for similarity search at scale.
- QdrantOpen-source vector database written in Rust, focused on performance.
- Redis (vector search)In-memory database with vector search capabilities for RAG use cases.
- SingleStoreDistributed SQL database with native vector search support.
- TileDBUniversal database engine supporting vector search on multi-dimensional data.
- TurbopufferObject-storage-backed vector database built for cost efficiency at scale.