OpenAI AWS Bedrock

The Azure era of OpenAI just ended.

This week, OpenAI's models — including GPT-5.5 — its coding agent Codex, and a new Bedrock Managed Agents service are now available in preview on Amazon Web Services. One day after Microsoft's exclusivity deal quietly dissolved.

For the past several years, Microsoft's $13 billion investment bought it something rare in enterprise tech: a lock on where OpenAI's frontier models could run. That lock is gone.

This matters more than most people realize.

The majority of enterprise data infrastructure runs on AWS. Bedrock already gives companies a single pane of glass to manage, fine-tune, and deploy AI models from Anthropic, Meta, Mistral, and others. Adding OpenAI to that roster doesn't just expand options — it fundamentally changes procurement decisions for every Fortune 500 IT team still anchored to AWS.

The companies that were waiting to adopt OpenAI because it meant re-platforming onto Azure no longer have that excuse. The migration friction just disappeared.

What this also signals: OpenAI is no longer just a model company. It is becoming an infrastructure company — one that will compete on AWS the same day it competes against it on ChatGPT Enterprise. That's a complicated position to hold.

The real question isn't whether enterprises will now adopt OpenAI on AWS. They will. The question is whether Microsoft saw this coming — and what it got in return for giving it up.

What does this shift mean for your organization's AI stack? Are you already on AWS Bedrock, or has Azure been the default path to OpenAI for your team?