AI BriefingUsing OpenAI GPT-5.5, GPT-5.4, and Codex on Amazon Bedrock
Key point
OpenAI's latest models GPT-5.5, GPT-5.4, and the coding agent **Codex** are now available on Amazon Bedrock.
Details
OpenAI's latest models GPT-5.5, GPT-5.4, and the coding agent Codex have officially launched on Amazon Bedrock. GPT-5.5 is optimized for complex workloads and reasoning, while GPT-5.4 offers excellent cost-performance.
Codex is a coding agent for AI-powered software development that supports code writing, refactoring, and debugging across large codebases. Built on GPT-5.5's reasoning capabilities, it provides intelligence optimized for complex, long development workflows.
All model inference runs through the Responses API, Amazon Bedrock's next-generation inference engine. Users can access the Codex App, Codex CLI, and IDE integrations such as Visual Studio Code, JetBrains, and Xcode.
Data security and cost efficiency have also been strengthened. All data processing stays within the Bedrock Region chosen by the user, and there's no separate seat license—users only pay for the tokens they use.
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