Pgvector vs. OpenSearch
Compare Pgvector vs. OpenSearch by the following set of capabilities. We want you to choose the best database for you, even if it’s not us.
Pgvector vs. OpenSearch on Scalability
Yes. pgvector enables separation of storage and compute by allowing you to store your application data on one database while storing vectors, lookup values, and filter values on a separate database.
Yes.
Both
pgvector scalability
You can use a solution like YugaByteDB to extend the capabilities of Postgres for distributed environments.
OpenSearch
OpenSearch supports horizontal scaling, cluster management optimizations, and efficient shard allocation, making it suitable for handling large datasets and high query loads effectively.
Pgvector vs. OpenSearch on Functionality
Performance is the biggest challenge with vector databases as the number of unstructured data elements stored in a vector database grows into hundreds of millions or billions, and horizontal scaling across multiple nodes becomes paramount.
Furthermore, differences in insert rate, query rate, and underlying hardware may result in different application needs, making overall system tunability a mandatory feature for vector databases.
Yes. Sparse & Dense Vectors and Scalar filtering.
yes, vector search & keyword search & scalar filtered search
HNSW & IVFFlat
ANN
OpenSearch
OpenSearch supports:
- Vectors with up to 16,000 dimensions.
- Vector generation through external libraries or directly within OpenSearch.
- Both binary and dense vectors.
- Cosine Similarity, Inner Product, and L2 Distance (Euclidean).
- Integration with multiple engines, including NMSLIB, Faiss, and Lucene, to facilitate vector indexing and searching.
Pgvector vs. OpenSearch on Purpose-built
pgvector is an add-on to Postgres
No. Vector search is an add-on to OpenSearch.
Use pgvector from any language with a Postgres client
Java, Python, JavaScript, Go, and .Net
Pgvector vs. OpenSearch: what’s right for me?
Pgvector
pgvector is a PostgreSQL extension designed to facilitate the storage, querying, and indexing of vectors within a PostgreSQL database.
License: PostgreSQL License
OpenSearch
OpenSearch is an open-source software suite for search, analytics, security monitoring, and observability applications. It is not purpose-built for vector storage and search workloads but introduces a vector search plugin to provide this capability. Amazon OpenSearch Service is an AWS-managed service for OpenSearch.
Apache 2.0
The Definitive Guide to Choosing a Vector Database
Overwhelmed by all the options? Learn key features to look for & how to evaluate with your own data. Choose with confidence.