OpenAI GPT-5.5, Codex, and Managed Agents on AWS release notes

TL;DR

OpenAI and AWS expanded their partnership to bring OpenAI models (including GPT‑5.5), Codex, and Amazon Bedrock Managed Agents powered by OpenAI to AWS customers in limited preview, allowing enterprises to build AI applications inside their existing AWS security, compliance, and procurement environments.

OpenAI models on AWS

Conclusion: OpenAI’s frontier models, including GPT‑5.5, are now accessible through Amazon Bedrock, letting customers run them alongside their existing AWS services, security controls, identity systems, and procurement processes. Details: The announcement states that OpenAI models, including the best frontier model GPT‑5.5, are launching on Amazon Bedrock. Customers can build with these models in AWS while using the services, security controls, identity systems, and procurement processes they already rely on. For developers, this provides flexibility to create new AI applications, embed intelligence in existing products, or build agentic workflows that reason, take action, and support complex business processes. For enterprises, it offers a clear single path from experimentation to production, with OpenAI capabilities available in the AWS environments where their most important workloads already run.

Codex on AWS

Conclusion: Codex, OpenAI’s frontier coding harness, can now be powered by OpenAI models served from Amazon Bedrock, giving AWS customers enterprise‑grade security, billing, and high availability while allowing Codex usage to count toward AWS cloud commitments. Details: More than four million people use Codex weekly for tasks across the software development lifecycle, research, analysis, and document‑based work. Organizations can configure Codex to use Bedrock as the provider, which processes all customer data through Amazon Bedrock and provides the expected AWS attributes. Codex on Bedrock is available in limited preview and can be configured via the Bedrock API, starting with the Codex CLI, desktop app, and Visual Studio Code extension.

Amazon Bedrock Managed Agents powered by OpenAI

Conclusion: Amazon Bedrock Managed Agents, now powered by OpenAI, handle deployment, tool use, orchestration, and governance, letting enterprises focus on building useful agents that operate within AWS security and compliance controls. Details: Bedrock Managed Agents enable organizations to build agents that maintain context, execute multi‑step workflows, use tools, and take action across complex business processes. This helps customers move from experimentation to production faster while keeping agent development aligned with AWS infrastructure, security, and operational standards. The service manages the harder parts of deployment, tool use, orchestration, and governance, with built‑in integration across Amazon’s security and compliance controls, resulting in a faster path from prototype to production for agents that can run in real enterprise environments.

Expanding how enterprises can build with AI

Conclusion: The expanded OpenAI‑AWS partnership provides enterprises a faster, more secure path to deploy advanced AI at production scale across application development, software engineering, and agentic workflows. Details: By making OpenAI models, Codex, and Managed Agents available on Amazon Bedrock, customers gain more ways to use OpenAI capabilities while building within the infrastructure, security, governance, and procurement workflows they already use on AWS. The partnership aims to help organizations deploy advanced AI at production scale, and the announcement expresses excitement about what customers will build.