Microsoft Gave Up the OpenAI Exclusivity That Kept Rivals Out

Microsoft just rewrote the strangest contract in technology, and the strangest part is the clause it deleted.

For years, the deal that let Microsoft and OpenAI co-exist contained a term that functioned like a timer on their whole relationship: Microsoft's exclusive rights to OpenAI's best AI models would last until the companies declared that OpenAI had achieved "artificial general intelligence" — AGI, a machine smart enough to do most tasks a person can. Not "until we both decide," exactly. The contract had a mechanism for this. An external committee of experts — an independent expert panel — would, someday, sit down and confirm that artificial general intelligence had arrived, and only then would Microsoft's lock on the frontier models snap open. No one could define AGI in a useful way. That is sort of the point: it was a proxy for "the deal ends when the thing we're all building becomes real."

That was the gate. And the gate is what made the whole arrangement make sense as a business.

Why the exclusivity mattered

Here is the version of the story you have probably heard: Microsoft bet on OpenAI early, paid billions, and in exchange got the right to put OpenAI's models in its products and to be the only cloud where they ran. That is true as far as it goes, but the mechanism matters more than the summary. Under the old deal, Microsoft had exclusive access to OpenAI's intellectual property and models, and two things followed from that. One, if you were any other technology company — Amazon, Google, Oracle — and you wanted to offer OpenAI's frontier models to your customers, you could not, except as a renter driving traffic onto Microsoft's Azure. And two, the state-of-the-art models that everyone in AI was racing to own were, for practical purposes, a Microsoft product. The exclusivity made Microsoft the gatekeeper of the most sought-after capability in the industry, and the AGI clause was the only scheduled exit.

So the deal effectively ensured that rival tech companies could not use the leading models on their own turf, on their own cloud, without Microsoft in the middle. The whole thing was engineered so Microsoft could never be bypassed.

The April rewrite

On April 27, 2026, Microsoft and OpenAI announced that this was over. Microsoft's license to OpenAI's IP and models continues, but it is now explicitly non-exclusive, running through 2032. OpenAI is free to serve all of its products to customers on any cloud provider — including Amazon and Google, which will quite happily sell you the same model Microsoft used to own. The AGI clause, and the independent expert panel that would have resolved it, are gone; according to one account, Microsoft no longer even has to determine what it would do if OpenAI reached AGI.

In exchange Microsoft kept things that look like very real money. It remains OpenAI's "primary" cloud partner, with OpenAI committed to buying $250 billion of Azure services and OpenAI products still shipping first on Azure. Microsoft's cloud order backlog is now about $625 billion, and the company has said roughly 45% of it comes from OpenAI's multi-year Azure commitments. Its equity stake also survives: Microsoft holds about 27% of OpenAI, an investment originally valued in the tens of billions that has since been marked well past $100 billion. And the revenue-share flow partly reverses — Microsoft no longer pays OpenAI a cut of its AI revenue, while OpenAI keeps paying Microsoft around 20% of its sales through 2030, now under a cap and no longer tied to whether AGI has arrived.

That last hedge is the tell. The old deal made Microsoft's share of OpenAI's upside theoretically unlimited, and let Microsoft stop paying the moment AGI showed up. The new deal caps the revenue that keeps flowing to Microsoft and says it will keep flowing regardless of OpenAI's technical progress. Microsoft traded the uncapped upside of a captive partner for the certainty of a big, bounded, contracted relationship.

What Microsoft actually bought

No one should pretend this is obvious arithmetic. The deal is, as these things go, a hedge against the scenarios where Microsoft loses, and it says a lot that Microsoft runs the deal with Anthropic — a competitor to OpenAI — on the side. The market's reaction at the announcement (Microsoft's stock slipped about 1%) suggests investors saw the exclusivity go away and gave up a little of the "Microsoft owns AI via OpenAI" premium.

The investment lesson runs through the structure, not the headlines. Microsoft is no longer the only door to frontier models; Amazon and Google get to be doors too. That is a real loss of optionality — the exclusive arrangement was worth something precisely because it made Microsoft the unavoidable landlord of the industry's most valuable tenant. What survives is a different bet: that Azure's growth is now explicitly negotiated, not owned. A huge share of Microsoft's cloud backlog sits with one partner that Microsoft no longer controls and that is now free to route its business to Microsoft's rivals. That is the relationship turned from an ownership right into a customer relationship — a very large, very sticky-looking, but non-exclusive customer relationship.

I do not know whether Microsoft gave up more than it got; the $250 billion Azure commitment and the surviving 27% stake are not nothing, and a giant capped revenue stream beats an uncapped one that might have been worth zero. But the framing matters. For the first time in six years, the leading AI company can do business with anyone. Microsoft's job — making sure OpenAI still wants to be its customer — is now more conventional, and more competitive, than it used to be. The company that once could not be bypassed now has to be chosen.