OpenAI’s models are no longer tied to a single cloud route. On June 1, AWS announced that GPT-5.5, GPT-5.4 and Codex are generally available on Amazon Bedrock, so AWS customers can call them directly from the platform they already use for cloud procurement, security and billing.
The lineup includes GPT-5.5 for agentic coding, data analysis and multi-step autonomous tasks, GPT-5.4 as the previous tier, and Codex as OpenAI’s coding agent. OpenAI says more than 4 million developers use Codex every week to write, refactor, debug, test and validate code.
The commercial detail matters as much as the models: customers pay by token, with no seat fee or developer-count commitment, and the spending can count against existing AWS cloud budgets. GPT models use OpenAI’s Responses API on Bedrock’s newer inference engine, while Codex connects through Codex App, CLI and IDE extensions for VS Code, JetBrains and Xcode.
Region and security are central to the pitch. GPT-5.5 starts in US East Ohio, GPT-5.4 in Ohio and US West Oregon, with other regions left to AWS documentation. IAM, PrivateLink, encryption, CloudTrail auditing and VPC isolation are included, and processing stays inside the selected Bedrock region.
Sources: CocoLoop, AWS News Blog, About Amazon