OpenAI Resolves Microsoft's Legal Concerns Over Major Amazon Agreement

On Monday, Microsoft and OpenAI announced a renegotiation of their partnership agreement. While some online commentary frames this as a win for OpenAI over Microsoft, the reality is that both companies secured significant benefits.

Critically, the new terms resolve a major uncertainty for OpenAI that emerged after it signed a massive, up-to-$50 billion deal with Amazon.

The revised agreement establishes a clear timeline. Instead of Microsoft holding exclusive access to all OpenAI products and intellectual property until the distant achievement of Artificial General Intelligence (AGI), Microsoft now has a non-exclusive license to OpenAI's IP for models and products through 2032.

Microsoft is still designated as OpenAI's "primary cloud partner," indicating that Azure will likely host the majority of OpenAI's cloud workload for the six-year duration of this deal. This is true even as OpenAI works with other partners to build its own data centers. A recent commitment from OpenAI to purchase an additional $250 billion in Microsoft cloud services reinforces to Microsoft shareholders that OpenAI remains a colossal Azure customer.

The companies state that OpenAI products will launch "first on Azure, unless Microsoft cannot and chooses not to support the necessary capabilities." However, a key change is that "OpenAI can now serve all its products to customers across any cloud provider."

The term "first" is not precisely defined in the announcement. It could mean a period of exclusivity on Azure or simply that Microsoft will be among the first vendors to offer OpenAI's latest products.

The most crucial aspect of this term is that it eliminates the potential for Microsoft to sue OpenAI over the AI lab's partnership with Amazon.

Very interesting announcement from OpenAI this morning. We’re excited to make OpenAI's models available directly to customers on Bedrock in the coming weeks, alongside the upcoming Stateful Runtime Environment. With this, builders will have even more choice to pick the right…

— Andy Jassy (@ajassy) April 27, 2026

While advantageous for OpenAI, Microsoft also secured wins. Under the new deal, Microsoft is no longer required to pay a revenue share to OpenAI. Conversely, OpenAI will continue to pay a revenue share to Microsoft through 2030, though this is now subject to a cap.

The exact financial impact on Microsoft is unclear but is likely measured in billions. Last quarter, Microsoft reported $7.5 billion in revenue attributed to its OpenAI investment.

Importantly, Microsoft retains its status as a major shareholder in OpenAI's for-profit entity, owning approximately 27% as of October. This means Microsoft financially benefits from OpenAI's overall growth, including sales generated on competing platforms like AWS.

The downside for Microsoft is the loss of potential exclusive cloud services revenue that a tighter partnership might have generated.

This may be less significant. Just as OpenAI has engaged with Microsoft's competitors, Microsoft has forged a close relationship with OpenAI rival Anthropic, using its Claude AI to power agentic products.

The biggest winners are enterprise customers. They gain greater freedom to choose their AI models and cloud providers as the tech giants compete to serve them.

Below is a timeline of recent developments in the Microsoft-OpenAI relationship.

In October, Microsoft and OpenAI announce a new agreement to help OpenAI defend against Elon Musk's lawsuit regarding its corporate structure. This agreement allows OpenAI to run non-API products on other clouds.

In November, OpenAI and Amazon sign their first multi-year agreement, involving a $38 billion commitment to AWS cloud services.

In February, Amazon announces an up-to-$50 billion investment in OpenAI, contingent on "certain conditions" including exclusive tech development and hosting deals for Frontier and stateful technology. Microsoft immediately disputes that AWS will have exclusive access to this technology.

In March, the Financial Times reports that Microsoft is considering legal action.

In April, OpenAI and Microsoft announce a new deal, which sets a calendar end date for their exclusive partnership and permits OpenAI to run all its products on other clouds. Microsoft ceases its revenue share payments to OpenAI. Microsoft remains a major shareholder in OpenAI.