SOURCE-LINKED INTELLIGENCE

Selecting a vector store for Amazon Bedrock Knowledge Bases

AWS Artificial Intelligence Blog · article · Sep 17, 2026 · UTC

Choosing the right vector store for your Amazon Bedrock Knowledge Bases RAG application affects performance and cost. This post compares Amazon OpenSearch Service, Amazon Aurora PostgreSQL with pgvector, and Amazon S3 Vectors across three RAG use cases, with benchmarks and a practical selection framework.

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Evidence & attribution

AWS Artificial Intelligence Blog · 2026-09-17T15:53:13.000Z

First collected: 2026-09-19T20:26:46.936Z. This is not the publication date.