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Amazon Bedrock Managed Agents Powered by OpenAI: What It Is and When to Use It (Preview)

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October 25, 2026

5 min read

Bedrock now runs OpenAI's agent harness and frontier models as a managed service inside AWS: IAM permissions, CloudTrail audit, data kept in AWS, with AgentCore Runtime as the default compute. How it relates to AgentCore, the OpenAI Agents SDK and Claude-based agents, and what preview means for production plans.

Amazon Bedrock
Bedrock Managed Agents
OpenAI
AgentCore
AI Agents

AWS first announced OpenAI models, Codex and Managed Agents on Bedrock as a limited preview in April 2026; Managed Agents powered by OpenAI reached public preview in October. It packages OpenAI's frontier models with OpenAI's agent harness, the loop that plans, calls tools and steers long-running tasks, and runs it inside your AWS account's controls.

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What you get

  • OpenAI models and the OpenAI agent harness, without managing the loop yourself.

  • Existing IAM permissions for what the agent can reach, and CloudTrail for what it did.

  • Data kept within AWS.

  • AgentCore Runtime as the default compute, or your own compute if you need it. The new AgentCore Runtime (September 2026) reclaims unused memory during a session, so you pay for actual use rather than peak.

How it compares

Option

You own

Choose it when

Bedrock Managed Agents (OpenAI)

Tools, permissions and prompts

You want OpenAI's harness and models with AWS governance, and accept a preview

AgentCore with your own framework

The agent loop and framework choice

You want any model, including Claude, and control of the loop

OpenAI Agents SDK or Claude Agent SDK on Lambda or ECS

Everything

Simple agents, or you already run these SDKs

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As of October 25, 2026. Provided as is, for general information, and accurate to the best of our knowledge on the date shown. Not legal, compliance, tax, financial or other professional advice. Prices, limits and vendor services change; check current vendor documentation before relying on anything here. Terms of use.