Cutting Amazon Bedrock Knowledge Base Costs by ~90%: Migrating from OpenSearch Serverless to Aurora Serverless v2 with pgvector
TL;DR If you are running an Amazon Bedrock Knowledge Base backed by OpenSearch Serverless (AOSS), you are paying a ~$700/month floor before you ingest a single document. For most small and mid-sized RAG workloads, swapping AOSS for Aurora PostgreSQL Serverless v2 with the pgvector extension drops that floor to under $50/month a ~90% cost reduction;…