OpenAI made its models — including the newly launched GPT-5.5 — available on Amazon Web Services through Amazon Bedrock on April 28, 2026, one day after ending its exclusive cloud distribution arrangement with Microsoft Azure. AWS CEO Matt Garman called the availability "what our customers have been asking for for a really long time," acknowledging that the previous Azure-only arrangement had created a structural barrier for the majority of enterprises running on AWS infrastructure. The launch includes Amazon Bedrock Managed Agents powered by OpenAI, letting enterprises deploy agents that maintain context, execute multi-step workflows, and operate within AWS's existing security controls and identity systems. For productivity teams at AWS-native companies, GPT-5.5's arrival on Bedrock removes the last architectural reason to route AI workloads through a separate cloud.
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