OpenAI shifts channels

OpenAI is telling staff that Amazon is now a key route to corporate customers after years of leaning on Microsoft. (cnbc.com) In a Sunday memo viewed by CNBC, Chief Revenue Officer Denise Dresser wrote that Microsoft had been “foundational” but had also “limited our ability” to meet enterprises on their preferred platforms, especially Amazon Bedrock. Dresser joined OpenAI in December 2025 to run global revenue strategy. (cnbc.com) (openai.com) The timing points to a change that started on February 27, 2026, when OpenAI and Amazon announced a multi-year partnership. Amazon said it would invest $50 billion in OpenAI, and OpenAI said it would bring its Frontier platform to Amazon Web Services while using 2 gigawatts of Amazon Trainium capacity. (openai.com) (aboutamazon.com) The product at the center of the memo is Bedrock, Amazon Web Services’ marketplace for artificial intelligence models and tools. Dresser wrote that customer demand since the Amazon deal was announced had been “frankly staggering,” according to CNBC and follow-up reports. (cnbc.com) (geekwire.com) OpenAI’s sales mix helps explain the urgency. Dresser said on April 8 that enterprise now makes up more than 40% of OpenAI’s revenue and is on track to reach parity with consumer revenue by the end of 2026. (openai.com) (cnbc.com) Microsoft and OpenAI publicly said on February 27 that their core deal had not changed. They said Azure remains the exclusive cloud provider for stateless OpenAI application programming interfaces, Microsoft keeps its intellectual property license, and the revenue-sharing arrangement still applies to OpenAI partnerships with other cloud providers, including Amazon. (blogs.microsoft.com) (openai.com) That means OpenAI is widening distribution without fully unwinding its Microsoft ties. The companies said any stateless application programming interface calls tied to third-party collaborations, including Amazon, would still run on Azure, while OpenAI keeps flexibility to buy additional compute elsewhere. (blogs.microsoft.com) (openai.com) The broader backdrop is a cloud market that no longer fits one exclusive alliance. OpenAI has said Amazon Web Services will be the exclusive third-party cloud distribution provider for Frontier, while Microsoft remains central to core application programming interfaces and licensing. (openai.com 1) (openai.com 2) Amazon is also backing Anthropic, and Dresser used the memo to argue that OpenAI should press its case harder against that rival in enterprise accounts. Microsoft did not respond to CNBC’s request for comment on the memo, but its joint statement with OpenAI said partnerships like the Amazon deal were already contemplated under existing agreements. (cnbc.com) (blogs.microsoft.com) The immediate question is not whether OpenAI is leaving Microsoft. It is how much of OpenAI’s next wave of enterprise growth will come through Amazon’s channels instead of Microsoft’s. (cnbc.com) (openai.com)