Top AI Product

April 28. One day after Microsoft’s exclusivity expired, GPT-5.5 went live on Amazon Bedrock. Seven years of Azure-only is over.

What’s actually shipping

GPT-5.5, GPT-5.5 Pro, and GPT-5.4 are callable through Bedrock APIs in limited preview. Same IAM, PrivateLink, CloudTrail, and guardrails AWS shops already use for Claude and Llama. Pricing matches OpenAI’s published rates: $5 per million input, $30 per million output for GPT-5.5; Pro tier is $30/$180. Bedrock doesn’t mark up.

Codex, OpenAI’s coding agent, ships in the same wave. Authenticate with AWS credentials, run inference through Bedrock, and Codex spend counts against your existing AWS cloud commit. That last bit matters more than it sounds — finance teams already have the budget approved.

What you can build

For existing Bedrock pipelines, this is a one-line provider swap. The interesting piece is Bedrock Managed Agents, a hosted runtime with OpenAI’s agent harness underneath, tuned for long-running tool use. Use case: enterprise workflows that want OpenAI quality plus AWS data residency and audit trails, without piping data to a third domain.

Why this is the real story

Microsoft just lost its loudest enterprise pitch — “OpenAI only here.” AWS picked up the model every CIO actually wants. OpenAI got leverage for the next infra round and a reported $38B Amazon compute deal. Three winners, one obvious loser.

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