Which OpenAI models are available on AWS?

OpenAI is launching its models, including the frontier model GPT-5.5, on Amazon Bedrock.

How can customers start using Codex on AWS?

Customers configure Codex to use Bedrock as the provider through the Bedrock API, starting with Codex CLI, the desktop app, and the Visual Studio Code extension.

What does Bedrock Managed Agents, powered by OpenAI, do?

It helps organizations build agents that maintain context, execute multi-step workflows, use tools, and take action, while handling deployment, orchestration, and governance.

Large Language ModelsAI Business & IndustryOpenAI BlogApr 28, 2026Apr 29, 2026, 04:00 JST

OpenAI models, Codex, Managed Agents now on AWS

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3 Key Points

What happened
OpenAI and AWS are expanding their strategic partnership, making OpenAI models, Codex, and Amazon Bedrock Managed Agents available on AWS. All three launch today in limited preview.
Why it matters
This lets enterprises use OpenAI's frontier models, including GPT-5.5, within their existing AWS infrastructure, security, and compliance systems. It gives AWS customers a single path from experimentation to production, and Codex usage can count toward AWS commitments.
What to watch
The limited preview will test whether enterprises adopt OpenAI through AWS as a primary route. More than 4 million people now use Codex weekly, suggesting strong existing demand.

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Context & Analysis

OpenAI and AWS are deepening their partnership so that enterprises can use OpenAI's capabilities within the AWS environments they already trust. This move brings together three areas: OpenAI models on Bedrock, the Codex coding agent, and Managed Agents. By embedding OpenAI into AWS, the companies are targeting enterprise clients that need security, compliance, and procurement workflows integrated with their AI tools.

For AWS, adding GPT-5.5 and Codex to Bedrock expands its AI offerings and gives customers a reason to stay within its ecosystem for advanced AI work. For OpenAI, this provides a distribution channel into large enterprises that may prefer AWS's enterprise-grade controls. The fact that Codex already sees over 4 million weekly users suggests significant demand for coding agents.

The limited preview phase will show whether enterprises move from testing to production with these integrated tools. Success likely depends on how easily teams can adopt Codex and Managed Agents while meeting their internal governance standards. The outcome may influence how other cloud providers and AI companies structure similar partnerships.

FAQ

Which OpenAI models are available on AWS?: OpenAI is launching its models, including the frontier model GPT-5.5, on Amazon Bedrock.
How can customers start using Codex on AWS?: Customers configure Codex to use Bedrock as the provider through the Bedrock API, starting with Codex CLI, the desktop app, and the Visual Studio Code extension.
What does Bedrock Managed Agents, powered by OpenAI, do?: It helps organizations build agents that maintain context, execute multi-step workflows, use tools, and take action, while handling deployment, orchestration, and governance.

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