OpenAI's models go live on AWS Bedrock

Amazon Web Services and OpenAI said on April 28 that OpenAI’s models, Codex, and Bedrock Managed Agents are now available through Amazon Bedrock. (aws.amazon.com) (openai.com) Amazon Bedrock is AWS’s managed service for renting large language models from multiple providers through one set of cloud controls and billing tools. OpenAI said that now includes its frontier models, including GPT-5.5, for customers already building on AWS. (aws.amazon.com) (openai.com) AWS said GPT-5.5 and GPT-5.4 will be available in preview on Bedrock, while Codex and Bedrock Managed Agents are launching as part of the same rollout. AWS also said usage of OpenAI models and Codex can count toward existing AWS cloud commitments. (aws.amazon.com 1) (aws.amazon.com 2) The managed-agents product is aimed at companies that want software agents to run inside their own AWS environment rather than through a separate vendor stack. AWS says each agent gets its own identity, logs every action for auditing, and runs with AWS security and governance controls. (aws.amazon.com) That setup follows a broader deal the companies announced on February 27, when OpenAI and Amazon said they would co-create a Stateful Runtime Environment for agents inside Bedrock. In that announcement, OpenAI also said AWS would be the exclusive third-party cloud distribution provider for OpenAI Frontier. (openai.com 1) (openai.com 2) The distribution change gives OpenAI a new route into enterprise accounts that already standardize on AWS procurement, identity, and compliance systems. OpenAI said customers can use its models in Bedrock alongside the AWS services, security controls, and purchasing processes they already rely on. (openai.com) AWS has spent the past year turning Bedrock into a marketplace for outside models as well as Amazon’s own systems. In December, AWS said Bedrock added 18 fully managed open-weight models from providers including Google, Mistral, NVIDIA, Qwen, and OpenAI. (aws.amazon.com) For customers, the immediate change is less about a new chatbot than about where they can buy and run OpenAI systems. As of April 28, they can do that inside Amazon’s cloud stack, with OpenAI’s latest models positioned as another Bedrock option. (aws.amazon.com) (openai.com)