OpenAI Ends Microsoft Exclusivity: ChatGPT Models Now Available Directly on AWS and Google Cloud

Microsoft and OpenAI announced on April 27, 2026 that they have renegotiated their foundational partnership, ending Microsoft's exclusive license to distribute OpenAI's technology across cloud providers. Starting in May 2026, enterprise customers on AWS and Google Cloud can access OpenAI models — including GPT-5.5 — directly through those platforms, without routing through Azure. For enterprise AI buyers, this is a significant practical change. The previous exclusivity arrangement meant that companies running primarily on AWS or Google Cloud infrastructure had to make an architectural exception for OpenAI models, either accepting Azure dependencies or working around the limitation. That friction is now removed. The deal restructure also changes the economics: OpenAI's revenue sharing arrangement with Microsoft is now capped on total volume rather than tied to OpenAI's technology milestones — including the achievement of artificial general intelligence. This removes a clause that would have given Microsoft leverage at the most commercially sensitive moment in OpenAI's history. For Microsoft, the trade-off is access: in exchange for dropping exclusivity, Microsoft retains preferred cloud status for OpenAI's infrastructure and secures the ability to freely integrate Anthropic and Google models in 365 Copilot without partnership conflicts. Analysts at D.A. Davidson framed the deal as essential for OpenAI's enterprise revenue growth, noting that AWS and Google Cloud customers were structurally limited from adopting OpenAI at scale by the previous arrangement.