OpenAI's Latest Models and Codex Now Generally Available on AWS Bedrock
On June 1, 2026, OpenAI announced that its latest frontier models and the coding agent "Codex" are now generally available (GA) on Amazon Bedrock. Enterprises can now run OpenAI's models in production while keeping the same security, compliance, and governance workflows they already use on AWS.
What Happened
OpenAI officially posted on X that its frontier models and Codex are now generally available on AWS. AWS official also announced this at the same time.
Prior to this, an official announcement on April 28, 2026, had launched the following three as a limited preview:
- OpenAI models on Amazon Bedrock: The latest frontier models such as GPT-5.5 and GPT-5.4 are available through Bedrock's existing API.
- Codex on Bedrock: Configure and launch the Bedrock API from the Codex CLI, desktop app, and VS Code extension.
- Amazon Bedrock Managed Agents, powered by OpenAI: An agent-building capability with memory retention, multi-step workflows, tool usage, agent ID management, and audit support (currently in limited preview).
With this GA transition (GPT-5.5, GPT-5.4, Codex), production operation is now possible in a form where data does not leave AWS, and usage can count toward eligible customers' existing AWS cloud commitments. Forbes
Background and Significance
This announcement is part of the expansion of the strategic partnership between OpenAI and AWS. The AWS offering was disclosed immediately after the reorganization of the exclusive partnership with Microsoft was announced around April 27–28, 2026, and is said to be the first case in which OpenAI models can be natively used on a major cloud other than Microsoft Azure. CNBC
Bedrock is a platform that lets you choose from Anthropic, Meta, Mistral, Cohere, Amazon's own models, and more through a single API with unified security. With the addition of OpenAI models, the options have expanded for enterprises that already have AWS commitments to use frontier models without a separate contract. About Amazon
On the operational side, it directly inherits AWS IAM, PrivateLink, CloudTrail, encryption, and existing compliance frameworks. Note that specific benchmark figures, pricing, region details, and token limits were not disclosed at the time of the official announcement.
Reactions
Swami Sivasubramanian, who is responsible for AWS's AI Services, added that GPT-5.5, GPT-5.4, and Codex are natively usable on Bedrock, with "Zero Operator Access," and that they count toward existing AWS contracts.
From users, there were many favorable voices about being able to "use frontier models in the AWS environment they already use," while during the preview period there were also comments such as "if Codex on AWS remains a limited preview, enterprise scaling will be delayed." X The GA announcement is seen as moving toward resolving such dissatisfaction.