Microsoft's revenue from OpenAI hit $10 billion last quarter

Microsoft generated $10 billion in revenue from its commercial arrangements with OpenAI — including revenue-sharing payments — in the quarter ended September 30, the company disclosed in a regulatory filing. That’s nearly 11% of Microsoft’s $92.3 billion in total revenue for the quarter, the first of its 2027 fiscal year, which starts in July. Across the full 2026 fiscal year, OpenAI-linked revenue reached $24.1 billion; at the latest quarterly pace, Microsoft would collect $40 billion a year from the relationship.

Microsoft also disclosed $7.2 billion in receivables still owed by OpenAI as of the end of September, up from $6 billion in June — money OpenAI owes for past transactions, not new revenue. It’s unclear how much of the $10 billion came from revenue-sharing payments versus Azure cloud-computing fees; TechCrunch has asked Microsoft for more detail.

Under an earlier arrangement, OpenAI reportedly hands over 20% of its revenue to Microsoft, tied to Microsoft’s investment of more than $13 billion in the startup — a figure neither company has confirmed publicly. An April 2026 agreement keeps that revenue share flowing through 2030, subject to a cap, even as OpenAI is now free to use rival cloud providers, following an October 2025 deal in which Microsoft gave up its exclusive hold on the startup.

Microsoft’s ownership stake in OpenAI has also slipped — about 25% in June, down to 24% by September — continuing a gradual decline from roughly 27% after the October 2025 recapitalization. Microsoft didn’t say what drove the dilution.

Why it matters

The disclosure quantifies just how financially intertwined Microsoft and OpenAI remain even as they compete for enterprise AI customers, and shows OpenAI’s revenue-sharing obligations are locked in through 2030 regardless of which clouds it also uses.