For five years, Microsoft held exclusive rights to OpenAI's technology - a deal that let it weave ChatGPT into Azure, Office, and Windows while locking out AWS and Google Cloud entirely. That exclusivity ended April 27 when the two companies announced a restructured agreement that's cleaner, more limited, and considerably less unusual than what it replaced.
The core change: OpenAI can now sell to any cloud provider. AWS and Google Cloud, previously blocked from offering OpenAI's models to their own customers, can now pursue deals. Microsoft retains a first-mover advantage - OpenAI products ship on Azure first, unless Microsoft chooses not to or can't support the required capabilities - but the exclusivity wall is down.
What Got Stripped Out
Two other changes stand out. Microsoft will no longer pay a revenue share to OpenAI. Instead, OpenAI maintains a 20% revenue share back to Microsoft until 2030, capped at an undisclosed total. The money now flows one direction.
The more structurally significant change is the removal of the AGI clause. The original deal gave Microsoft different commercial rights depending on whether OpenAI had achieved artificial general intelligence - a sufficiently capable AI system that can perform most human tasks. That clause created real legal ambiguity: if OpenAI ever declared it had reached AGI, Microsoft's rights could shift entirely. The new deal scraps that trigger and ties all rights to specific calendar dates instead, running through 2032. Rights based on a vague technical milestone are replaced by rights based on a fixed calendar. Much harder to dispute.
Microsoft stays as a major shareholder in OpenAI's commercial arm and continues to benefit directly from OpenAI's growth. And OpenAI's products still launch on Azure first. This isn't a breakup - it's a normalization of a relationship that grew increasingly complex as OpenAI's scale, and its own infrastructure ambitions, expanded far beyond what the original terms anticipated.
For businesses running on the OpenAI API, the practical near-term impact is minimal. But the long-term signal is real: OpenAI is no longer a Microsoft-exclusive asset, and the competition to host its models across cloud platforms can now begin.