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Amazon Bedrock Expands Managed Knowledge Base Retrieval Modes
AI assistants · Enterprise AI
Amazon Bedrock Managed Knowledge Base updated AgenticRetrieveStream with single-shot RAG and retrieval-only modes via maxAgentIteration.
AWS announced updates to Amazon Bedrock Managed Knowledge Base, expanding the AgenticRetrieveStream API to support single-shot Retrieval Augmented Generation (RAG) and retrieval-only requests alongside existing multi-step agentic retrieval. The expanded configuration allows developers to adjust the maxAgentIteration parameter from 0 to 5 to control retrieval depth and foundation model usage across workflows.
Key takeaways
- The maxAgentIteration parameter now supports values from 0 to 5 within a single API endpoint.
- Setting maxAgentIteration to 1 executes single-shot RAG with one retrieval and one generated response, eliminating planning rounds.
- Setting maxAgentIteration to 0 returns source passages without invoking a foundation model, requiring generateResponse to be set to false.
- Values from 2 to 5 enable agentic retrieval, permitting up to n minus 1 query decomposition and planning rounds before generating an answer.
Source：AWS Machine Learning Read the original ↗
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