OpenAI Models and Codex Agent Now on Amazon Bedrock After Microsoft Exclusivity Ends
The enterprise AI landscape just shifted in a fundamental way. OpenAI’s models — including GPT-5.4 and GPT-5.5 — and its Codex coding agent are now available on Amazon Bedrock in limited preview, just one day after OpenAI ended its cloud exclusivity agreement with Microsoft. And AWS didn’t stop there: it launched “Bedrock Managed Agents powered by OpenAI” as a new enterprise agentic service category. If you’ve been tracking the AI infrastructure wars, today’s announcement is the shot that reshapes the map. ...