Amazon RDS for PostgreSQL supports pgvector 0.8.0

Amazon Relational Database Service (RDS) for PostgreSQL now supports pgvector 0.8.0, an open-source extension for PostgreSQL for storing and efficiently querying vector embeddings in your database, letting you use retrieval-augemented generation (RAG) when building your generative AI applications. pgvector 0.8.0 release includes improvements on PostgreSQL query planner’s selection of index when filters are present, which can deliver better query performance and improve search result quality.

pgvector 0.8.0 release includes a variety of improvements to how pgvector filters data using conditions in WHERE clauses and joins that can improve query performance and usability. Additionally, the iterative index scans help prevent ‘overfiltering’, ensuring generation of sufficient results to satisfy the conditions of a query. If an initial index scan doesn't satisfy the query conditions, pgvector will continue to search the index until it hits a configurable threshold. This release also has performance improvements for searching and building HNSW indexes.

pgvector 0.8.0 is available on database instances in Amazon RDS running PostgreSQL 17.1 and higher, 16.5 and higher, 15.9 and higher, 14.14 and higher, and 13.17 and higher in all applicable AWS Regions.

Amazon RDS for PostgreSQL makes it simple to set up, operate, and scale PostgreSQL deployments in the cloud. See Amazon RDS for PostgreSQL Pricing for pricing details and regional availability. Create or update a fully managed Amazon RDS database in the Amazon RDS Management Console.