OpenAI's GPT-5.5 and Codex Become Generally Available on AWS Bedrock

On June 1, 2026, AWS and OpenAI announced that OpenAI's frontier models and its coding agent "Codex" are now generally available (GA) on Amazon Bedrock. Enterprises can use the latest models such as GPT-5.5 while keeping their existing AWS environment and governance as is.

What Happened

OpenAI and AWS are offering OpenAI's latest frontier models (including GPT-5.5 and GPT-5.4), Codex, and "Amazon Bedrock Managed Agents, powered by OpenAI" on Amazon Bedrock. These started as a limited preview on April 28, 2026, and became generally available (GA) on June 1. AWS announcement OpenAI

Via Bedrock, Codex can be integrated with the Codex CLI, the desktop app, and the Visual Studio Code extension. Usage takes place through the existing Bedrock API, and AWS's security, governance, and cost management apply as is. There is no need to build a new security model separately. AWS What's New

Billing is pay-as-you-go on a per-token basis, and usage counts toward existing AWS cloud commitments. Note that specific benchmark figures and detailed pricing were not disclosed at the time of the official announcement.

Background and Significance