Microsoft booked $10 billion in revenue from OpenAI last quarter

Microsoft generated $10 billion in revenue from commercial arrangements with OpenAI, including revenue-sharing payments, in the quarter ended September 30, the company said in a regulatory filing on Wednesday. According to TechCrunch, that is nearly 11% of Microsoft's total quarterly revenue of $92.3 billion.

The calendar needs a note: Microsoft's fiscal year begins in July, which makes the quarter ended September 30 the first quarter of its fiscal 2027.

Over a longer horizon, revenue from OpenAI reached $24.1 billion for the full 2026 fiscal year. At the latest quarterly pace, Microsoft would pull in roughly $40 billion a year from OpenAI-related arrangements.

The filing also showed $7.2 billion in outstanding receivables from OpenAI at the end of September, up from $6 billion at the end of June. That money represents amounts OpenAI owes for previous transactions rather than additional revenue.

Microsoft did not break down how much of the $10 billion came from revenue-sharing payments versus Azure cloud services. TechCrunch said it has asked the company for more detail, and noted its November 2025 report, based on leaked documents, that Microsoft had received $865.8 million in net revenue-sharing payments from OpenAI in the first nine months of that year.

The financial relationship has a contractual floor. OpenAI shares 20% of its revenue with Microsoft under an earlier deal in which the software giant invested more than $13 billion in the AI startup — a percentage neither company has publicly confirmed. Under an April 2026 agreement, OpenAI must keep sharing revenue with Microsoft through 2030, subject to a cap, even as it is allowed to work with competing cloud providers.

The ties have also been loosening. In October 2025, Microsoft gave up its hold on OpenAI to let the startup partner with other cloud providers, in exchange for a commitment to buy an additional $250 billion in Azure services. Microsoft's ownership stake slipped from about 25% in June to 24% in September, continuing a gradual decline from roughly 27% after the October 2025 recapitalization; the company did not specify what caused the dilution.

For Microsoft the number cuts both ways: it is the hardest financial evidence behind the AI story, and it is a concentration risk, with a single partner supplying more than a tenth of quarterly revenue so that any change in contract terms, compute commitments or governance lands directly in the results. What to watch next is the split between revenue sharing and Azure consumption, and the renewal talks before the 2030 revenue-share cap comes into play.