Bedrock Knowledge Bases Adds One-Shot RAG and Retrieval Modes
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On November 10, 2026, the AWS Machine Learning Blog announced updates to the retrieval capabilities of Amazon Bedrock Managed Knowledge Bases: via the newly added AgenticRetrieveStream API, the service now supports one-shot RAG (retrieval-augmented generation) requests and pure retrieval requests. Along with the existing agentic retrieval mode, there are now three modes in total, and all three can be selected and used on demand within the same API. This update gives developers more flexible ways to invoke knowledge bases in different scenarios—whether completing retrieval and generation in a single step, performing retrieval only, or delegating retrieval to an agent.
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- AWS Machine Learning BlogSingle-shot and agentic retrieval with Amazon Bedrock Managed Knowledge Base
Amazon Bedrock Managed Knowledge Base adds single-shot RAG and pure retrieval requests via AgenticRetrieveStream, alongside the existing agentic retrieval, so all three modes can be selected on demand within the same API.
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