OpenAI brings latest AI models and Codex to Amazon Bedrock

OpenAI moved its newest models and Codex into Amazon Bedrock, giving AWS customers direct access to tools for building and deploying AI agents without leaving Amazon’s cloud. The launch, which arrived in limited preview on April 28, widened OpenAI’s distribution beyond Microsoft Azure and made its enterprise push look less like a product demo and more like a battle for where corporate AI actually gets used.

The Bedrock rollout included OpenAI models, Codex and Bedrock Managed Agents powered by OpenAI, including GPT-5.5. AWS said the new offerings inherit the security and governance features enterprises already expect inside Amazon’s environment, including IAM, PrivateLink, guardrails, encryption and CloudTrail logging. OpenAI said the integration should give customers a faster path to putting AI to work inside the systems, security protocols, compliance requirements and procurement workflows they already use.

The commercial stakes are substantial. Amazon said in November 2025 that it had agreed to invest $50 billion in OpenAI, while OpenAI said its AWS agreement represented a $38 billion commitment for cloud services over seven years. In February, the two companies said AWS would be the exclusive third-party cloud distribution provider for OpenAI Frontier and that OpenAI would consume 2 gigawatts of Trainium capacity through AWS infrastructure. That combination of distribution, investment and chip access shows how AI competition now runs as much through infrastructure as through model quality.

Codex already reaches more than 4 million people every week, and AWS said it will be available through the Codex CLI, desktop app and VS Code extension. Eligible customers can also apply Codex usage toward existing AWS cloud commitments, which lowers friction for large companies that prefer to buy through accounts they already manage. Amazon said OpenAI was already one of the more popular model providers on Amazon Bedrock, with thousands of customers using its models for coding, scientific analysis and mathematical problem-solving.

For OpenAI, the move broadens enterprise reach at a moment when corporate adoption is increasingly decided by cloud placement, not just benchmark scores. For Amazon, it strengthens Bedrock as a one-stop shop for builders and reduces reliance on Anthropic as the marquee AI supplier inside AWS. It also puts new pressure on Microsoft and Google, because the fight is now over distribution power, not product hype. The cloud that makes identity, billing, security and deployment easiest will have the advantage as enterprise AI spending deepens.