Updated Sep 9
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Nov 11, 2026
Bedrock's AgenticRetrieveStream now takes maxAgentIteration 0 or 1: passages only, or one retrieval plus one answer
On November 9, 2026, AWS said Amazon Bedrock Managed Knowledge Base can run retrieval-only and single-shot RAG requests through AgenticRetrieveStream. Setting maxAgentIteration to 0 with generateResponse false returns passages with no foundation model call. Setting it to 1 retrieves once and generates one answer with no planning rounds. Values 2 to 5 keep the existing agentic behavior. The application chooses the mode; the parameter does not route requests automatically. AWS gives no new latency, cost or accuracy measurements, and the passages-only stream differs in shape from a direct Retrieve call.
AWSAmazon BedrockRAG
Oct 26, 2026
Bedrock Web Search adds domain filters and location controls for grounded answers
Developers can choose which sites inform a response and provide optional geography. The controls apply to an existing Responses API workflow in four AWS Regions.
Amazon BedrockAWSWeb search
Oct 20, 2026
Amazon Bedrock adds schema-enforced outputs for Claude across both API surfaces
Amazon Bedrock now supports JSON Schema output format and strict tool use for available Anthropic Claude models on its runtime and Mantle endpoints. Constrained decoding can eliminate malformed JSON, but developers still need semantic validation, authorization checks and acceptance tests for downstream actions.
Amazon BedrockAnthropic Claudestructured outputs