OpenAI Makes Frontier Models, Codex Available on AWS for 5 Million Weekly Codex Users
Updated
Updated · OpenAI · Jun 1
OpenAI Makes Frontier Models, Codex Available on AWS for 5 Million Weekly Codex Users
7 articles · Updated · OpenAI · Jun 1
OpenAI said its frontier models and Codex are now generally available on AWS, giving millions of AWS customers a new route to deploy the company’s AI inside existing cloud environments.
AWS availability targets a key enterprise hurdle: moving AI from testing into production while keeping current security, compliance, procurement, billing and governance workflows intact.
Codex on Amazon Bedrock brings OpenAI’s software-engineering agent—already used by more than 5 million people each week—into AWS for writing, reviewing, debugging and modernizing code.
The offerings are available in both AWS Commercial and GovCloud regions, positioning the partnership as a lower-friction path for regulated and public-sector deployments.
OpenAI said the AWS rollout is a broader starting point and plans to add Daybreak, including cyber models and Codex Security, for software defense and risk analysis.
As OpenAI's new 'Daybreak' AI automates cyber defense, what prevents it from becoming a superweapon for hackers?
How will Microsoft's legal threat impact the exclusive $150 billion partnership between AWS and OpenAI?
OpenAI Breaks Microsoft Exclusivity: GPT-5.5, Codex, and Agents Now Generally Available on AWS Bedrock
Overview
On April 28, 2026, OpenAI’s advanced models—including GPT-5.5, GPT-5.4, and the Codex coding agent—became generally available on Amazon Bedrock, marking the end of Microsoft Azure’s nearly seven-year exclusive hosting of OpenAI’s language models. This move opens access to a broader enterprise audience and signals the start of a new multi-cloud era for OpenAI. As OpenAI prepares for a 2026 IPO, expanding beyond a single cloud provider is crucial to reach more enterprises and demonstrate large-scale deployment. Multi-cloud distribution is now essential for OpenAI to achieve the scale needed for its next phase of growth.