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Automated Reasoning policy refinement in Amazon Bedrock

AWS Machine Learning Blog · Aug 03, 2026 · Product Launches

AWS automates Bedrock Automated Reasoning policy refinement, eliminating manual diagnose-edit-retest cycles

“Refining an Automated Reasoning policy in Amazon Bedrock has been a manual cycle of diagnose, hand-edit, retest, and repeat.”

Amazon Bedrock now offers automatic policy refinement for its Automated Reasoning checks, which use formal logic to verify AI outputs with up to 99% accuracy. The new feature introduces two modes — Iterative Refinement for rule issues and Ambiguous Variable Refinement for language issues — that diagnose failing test cases and propose fixes without requiring manual edits. This matters because policy tuning was the primary friction point blocking enterprise adoption of formal verification-based guardrails.

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