OpenAI brings GPT-5.5, Codex, and managed agents to AWS as expanded Amazon partnership goes live

The expanded partnership gives enterprise customers access to OpenAI's most advanced models, its coding agent, and agentic AI tools directly within their existing AWS environments, days after Microsoft's exclusive license to OpenAI products was formally ended.

OpenAI has announced that GPT-5.5, Codex, and Amazon Bedrock Managed Agents powered by OpenAI are all coming to AWS in limited preview.

OpenAI has announced that its models, including GPT-5.5, its Codex coding agent, and a new Amazon Bedrock Managed Agents product powered by OpenAI are all coming to AWS, in the first major practical outcome of the restructured relationship between OpenAI, Microsoft, and Amazon. All three capabilities are launching in limited preview.

The announcement follows last week's amended partnership agreement between Microsoft and OpenAI, which ended Microsoft's exclusive license to OpenAI products and gave OpenAI the right to serve its products across any cloud provider through 2032. The AWS expansion is effectively the first demonstration of what that new freedom looks like in practice, and it lands just days after the exclusivity change was confirmed.

Denise Holland Dresser, Chief Revenue Officer at OpenAI, took to LinkedIn to frame the expansion in terms of the customer conversations she has had since joining the company: "One thing I've heard consistently is that access to frontier models really matters. Expanding that access, moving it from something scarce and specialized into something every business and employee can use productively, is core to our mission."

Dresser added that the conversation with customers has shifted beyond model quality alone: "Companies want the best models, but they also want them where their data lives, where their workflows already run, and where their developers and security teams are comfortable building."

GPT-5.5 arrives on Amazon Bedrock

The most high-profile element of the announcement is the availability of OpenAI models, including GPT-5.5, on Amazon Bedrock. Enterprise customers can now build with OpenAI models within AWS alongside the security controls, identity systems, and procurement processes they already use. For organizations that have committed cloud spending with AWS, this creates a direct procurement path for OpenAI products that does not require a separate relationship with Microsoft Azure.

For developers, the announcement introduces additional flexibility in how they build with OpenAI, from application development to embedded intelligence within existing products to agentic workflows that can reason, take action, and handle complex business processes.

Many universities, school districts, and EdTech companies already run their infrastructure on AWS. The ability to access OpenAI models natively within those environments removes a layer of procurement friction that previously channeled all API-based OpenAI access through Azure.

Codex goes multi-cloud for the first time

OpenAI's Codex, the company's coding agent and product suite, is also coming to AWS. Codex now has more than four million weekly users and is used across the full software development lifecycle, from writing and explaining code to refactoring applications, generating tests, modernizing legacy codebases, and increasingly for research, analysis, and document-based work beyond coding.

Organizations can now power Codex with OpenAI models served directly from Amazon Bedrock, meaning any company with an existing AWS commitment and Bedrock access can start using the coding agent without establishing a separate cloud relationship. Codex on Bedrock is available in limited preview, with customers able to configure it through the Bedrock API starting with Codex CLI, the Codex desktop app, and the Visual Studio Code extension.

Eligible customers can also apply Codex usage toward their existing AWS cloud commitments, a detail that is likely to be significant for enterprise procurement teams with pre-negotiated cloud spending.

Managed agents bring agentic AI to AWS infrastructure

The third element of the announcement is Amazon Bedrock Managed Agents powered by OpenAI, a new product that gives enterprises a way to deploy AI agents within their existing AWS environments. The agents can maintain context, execute multi-step workflows, use tools, and take action across complex business processes, with orchestration, governance, and security handled through Amazon's built-in compliance controls.

The managed agents product is designed to reduce the gap between prototype and production for agentic AI, a category that has attracted significant attention across the EdTech and enterprise technology sectors but where deployment at scale remains an early-stage challenge for most organizations.

OpenAI framed the broader partnership expansion as an effort to meet customers within the infrastructure they already trust. Dresser wrote on LinkedIn that the company is "meeting customers where they are, expanding access to our models, and making it possible for businesses around the world, big and small, to just build things."

With GPT-5.5 now available on Bedrock, Codex going multi-cloud for the first time, and managed agents launching in preview, the practical reality of OpenAI's post-exclusivity era is arriving faster than many observers anticipated.