rag

A 5,000-document corpus on the site calculator is $163.28/month on S3 Vectors and $510.52/month on OpenSearch Serverless Classic. $160 of the smaller bill is Claude Sonnet 5.5.

On 23 Sep 2026 AWS added Salesforce and Zendesk connectors. The managed Salesforce crawl is 4 entity flags, not the classic preview's 21 CRM objects. New customer-managed Salesforce connectors stop on 30 Sep 2026.

Managed Knowledge Base Web Crawler, GA with the service on 17 Jun 2026, follows up to 300 URLs per minute from 10 seeds or 3 sitemaps. A 10,000-URL help center is at least 34 minutes at that cap, and the crawler still has no per-page ACL.

On August 5, 2026 DynamoDB GA’d native vector search — single-digit ms at 99%+ recall, up to 4096 dims, SearchVectors topK ≤ 100. Decision guide vs S3 Vectors, OpenSearch, and Bedrock Knowledge Bases.

Compare fine-tuning and RAG (retrieval-augmented generation) for customizing LLMs on Bedrock. Cost, latency, and accuracy trade-offs.

Amazon Bedrock Knowledge Bases automate the RAG (Retrieval-Augmented Generation) pipeline — semantic search, chunking, embedding, and context injection into Claude or other foundation models. This guide covers setup, data ingestion, cost optimization, and production patterns.

On June 16, 2026, S3 Vectors raised the QueryVectors limit to 10,000 results per query and cut data-processed charges up to 80% on indexes over 10M vectors. Architecture, pagination, and cost comparison vs OpenSearch and MemoryDB.

ElastiCache loses your AI chatbot's session memory at every node replacement. MemoryDB doesn't. A decision framework for when to pick MemoryDB over ElastiCache, OpenSearch Serverless, and S3 Vectors for AI workloads — with the latency math and the failure mode that forces the switch.