Microsoft and OpenAI Reshape Partnership Amid Amazon Investment
On Monday, Microsoft and OpenAI announced that they had renegotiated the deal between the two companies. Despite some opinions on X calling it a victory for the ChatGPT maker over the Windows giant, both sides emerge winners.
New Agreement Brings Balance
Most importantly, the new terms solve a problem that has plagued OpenAI since it signed its up to $50 billion contract with Amazon. With this new deal, Microsoft does not have exclusive access to all of OpenAI’s products and IP until the magical day OpenAI produces AGI, but rather its partnership has a definitive timeline. This agreement grants Microsoft a non-exclusive license to OpenAI IP for models and products until 2032.
The two companies still refer to Microsoft OpenAI as a “primary cloud partner,” meaning that the majority of OpenAI’s cloud over the six years this deal covers will likely be provided by Azure, even as OpenAI rushes to build its own data centers with other partners. In October, OpenAI agreed to buy Microsoft’s cloud in a deal worth another $250 billion. This line is a message to Microsoft shareholders that OpenAI will continue to be a large Azure customer.
Flexibility in OpenAI Product Offerings
OpenAI products will “deliver on Azure first unless Microsoft cannot and does not want to support the required features,” the companies say. But crucially: “OpenAI can now offer all of its products to customers from any cloud provider.”
Again, “first” is not clearly defined in this announcement, whether that means it will only be available exclusively on Azure for a certain period of time or just that Microsoft will also be among the vendors offering OpenAI’s latest products.
But the most important part of this term: It eliminates the possibility that Microsoft could sue OpenAI over the AI lab’s contract with Amazon.
Amazon’s Significant Investment
To recap this mess: In February, OpenAI announced that Amazon was investing up to $50 billion in the model builder, consisting of an initial investment of $15 billion and an additional $35 billion “in the coming months if certain conditions are met,” the companies said, without specifying what those conditions were.
In return, OpenAI agreed to co-develop a “stateful runtime technology” on AWS Bedrock (the AWS service that provides various AI models and services). Stateful Runtime is the technology that supports AI agents and allows them to remember tasks and contexts over long periods of time.
OpenAI also promised that AWS would have exclusive rights to deploy Frontier, OpenAI’s new agent creation tool. And there is the problem.
Resolving Contractual Conflicts
OpenAI’s original agreement with Microsoft prevented OpenAI from selling Frontier exclusively on AWS, and potentially prevented AWS from selling it at all.
While Microsoft previously agreed to let OpenAI run certain select products, such as consumer ChatGPT, on other cloud providers, the company retained exclusive rights to all OpenAI products accessed through an API, such as Frontier.
In fact, on the same day that OpenAI announced its AWS deal, Microsoft publicly refuted the AWS-exclusive terms, writing (emphasis Microsoft):
Microsoft retains its exclusive license and access to intellectual property for all OpenAI models and products. … Azure remains the exclusive cloud provider of stateless OpenAI APIs. …All stateless API calls to OpenAI models resulting from collaboration between OpenAI and third parties – including Amazon – would be hosted on Azure. … OpenAI’s first-party products, including Frontier, will continue to be hosted on Azure.
Microsoft also emphasized that its terms are in effect until OpenAI reaches AGI. The Financial Times reported that Microsoft was even considering legal action if it had to enforce these contract terms.
Implications and Future Prospects
So the new agreement eliminates Microsoft’s exclusive rights and solves the legal threat of AWS. In a post on
Very interesting announcement from OpenAI this morning. We look forward to making the OpenAI models directly available to customers on Bedrock in the coming weeks, along with the upcoming Stateful Runtime Environment. This gives builders even more options when choosing the right…
— Andy Jassy (@ajassy) April 27, 2026
While this deal is good for OpenAI, Microsoft has also seen some success. The new deal now allows Microsoft to stop paying a revenue share to OpenAI, while OpenAI continues to pay a revenue share to Microsoft until 2030, although this is now subject to a cap.
It is difficult to say exactly how much money will flow to Microsoft, but it is likely that it will be in the billions. Last quarter, Microsoft reported that it earned $7.5 billion in a single quarter from its investment in OpenAI.
The kicker is that Microsoft remains a major shareholder in OpenAI, owning about 27% of the for-profit company, it said in October. It benefits financially from OpenAI’s growth, even from the sales it makes on AWS.
The downside, of course, is that Microsoft loses out on any additional cloud services it could sell due to an exclusive deal with OpenAI.
That shouldn’t matter much. Just as OpenAI has courted Microsoft’s biggest rivals, Microsoft has a new, cozy relationship with OpenAI competitor Anthropic so the cloud giant can use its Claude AI to power agent products.
The biggest winners here are the companies that can choose their own models and clouds, while the giants compete among themselves to provide their services.
Timeline of Recent Developments
In October, Microsoft and OpenAI announced a new agreement to help OpenAI fend off Elon Musk’s lawsuit over its corporate structure, which gives OpenAI the ability to run products on other clouds without API access.
In November, OpenAI and Amazon signed their first multi-year agreement in which OpenAI secured an AWS cloud contract worth $38 billion.
Amazon in February announced a up to $50 billion investment in OpenAI, subject to “certain conditions,” including the exclusive tech development and hosting agreement for Frontier and Stateful Tech. On the same day, Microsoft refuted that AWS would only have this technology.
In March As the Financial Times published, Microsoft is considering legal action.
In April, OpenAI and Microsoft announced a new deal which includes a calendar end date for their exclusive partnership and allows OpenAI to run all of its products on other clouds. Microsoft no longer has to pay revenue share to OpenAI. Microsoft remains a major shareholder in OpenAI.
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