OpenAI Models Now Broadly Available on AWS, Breaking Microsoft's Platform Exclusivity

As of June 2026, OpenAI's frontier models and Codex are generally available on Amazon Bedrock, AWS's managed AI service. This caps an eight-month partnership escalation: a $38 billion cloud services deal in November 2025, strategic alignment by February 2026, and April's renegotiation of OpenAI's Microsoft exclusivity clause. Enterprise developers can now integrate OpenAI capabilities directly into AWS environments without separate OpenAI contracts. The shift breaks structural constraints that previously confined OpenAI's distribution to Microsoft's cloud.