Amazon adds OpenAI models to AWS Bedrock following end of Microsoft exclusivity

Amazon has moved quickly to capitalise on the end of Microsoft's exclusive rights to OpenAI products, announcing a major integration of the startup’s technology into Amazon Web Services (AWS).

Following a revised agreement between OpenAI and Microsoft on Monday, 27 April 2026, Amazon CEO Andy Jassy described the development as a "very interesting announcement."

The shift effectively allows OpenAI to fulfil the terms of its landmark $50-billion partnership with Amazon by making its most advanced tools available on the AWS cloud.

On Tuesday, Amazon revealed that its Bedrock service—a platform for building and scaling AI applications—now includes OpenAI’s latest reasoning models and the code-writing service, Codex.

Central to this rollout is a new product called "Bedrock Managed Agents." This service is specifically engineered to utilise OpenAI’s high-level reasoning capabilities, offering developers advanced features such as agent steering and enhanced security protocols.

Amazon’s blog post emphasised that this integration marks "the beginning of a deeper collaboration" between the two tech giants.

This expansion comes amid reports of a deteriorating relationship between Microsoft and OpenAI. While OpenAI has sought new infrastructure support from AWS and Oracle, Microsoft has increasingly turned to its rival, Anthropic.

The Redmond-based software giant is reportedly developing a new suite of AI agents powered by Anthropic’s "Claude" models.

As the competitive landscape shifts, the once-monolithic partnership between Microsoft and OpenAI appears to be transitioning into a broader, more fragmented ecosystem where the major cloud providers compete for access to the most powerful frontier models.