Microsoft recorded $10 billion in revenue from OpenAI in latest quarter

The scale of the partnership

Microsoft reported that it generated $10 billion in revenue from commercial arrangements with OpenAI for the quarter ending September 30, 2026. This figure represents nearly 11% of the software giant's total quarterly revenue of $92.3 billion. The numbers highlight the massive financial scale of the relationship between the two entities.

According to a regulatory filing, the revenue from OpenAI reached $24.1 billion for the full 2026 fiscal year. At the current quarterly pace, Microsoft is on track to pull in $40 billion annually from OpenAI-related arrangements. These figures underscore how central OpenAI has become to Microsoft's broader business strategy.

The financial connection is further evidenced by the fact that OpenAI owed Microsoft $7.2 billion in unpaid balances as of late September. This amount represents money that OpenAI owes for previous transactions rather than new revenue. This balance increased from $6 billion at the end of June, showing a growing amount of unpaid debt from the AI lab.

How the money flows

The specific breakdown of how Microsoft earns this money remains unclear, as the company did not specify the split between revenue-sharing and cloud services. However, previous reports suggest a significant portion comes from direct payments. TechCrunch reported that Microsoft received $865.8 million in net revenue-sharing payments during the first nine months of 2025.

Reports suggest that OpenAI gives Microsoft a 20% cut of its earnings as part of a deal where the software giant invested more than $13 billion. While neither company has publicly confirmed this specific percentage, it serves as a primary mechanism for profit distribution. This arrangement ensures Microsoft benefits directly from the commercial success of OpenAI's products.

The revenue-sharing structure is set to continue for several years. An agreement from April 2026 mandates that OpenAI must continue sharing revenue with Microsoft through 2030. This commitment is subject to a cap, providing a long-term financial floor for Microsoft's investment in the AI startup.

Shifting toward competition

The relationship between the two companies is currently undergoing a transition toward less exclusivity. In October 2025, Microsoft began loosening its hold on OpenAI to allow the startup more freedom. This move was intended to let OpenAI partner with other cloud providers beyond just Microsoft's Azure platform.

In exchange for this increased freedom, OpenAI committed to a massive purchase of cloud services. The companies agreed in October 2025 that OpenAI would buy an additional $250 billion in Azure services. This ensures that even as OpenAI explores other options, Microsoft remains a primary destination for its computing needs.

This shift reflects a broader trend of companies seeking to balance deep integration with market flexibility. By allowing OpenAI to work with competitors, Microsoft may be trying to prevent the AI lab from becoming too dependent on a single provider. At the same time, the $250 billion commitment secures Microsoft's role as a dominant infrastructure host.

Ownership and dilution

Microsoft's direct ownership of OpenAI has seen a gradual decline over the last year. The company's stake dropped from about 25% in June 2026 to 24% by the end of September. This follows a previous decline from roughly 27% that occurred following a recapitalization in October 2025.

Microsoft did not provide a specific reason for why its ownership stake was diluted during this period. Dilution typically occurs when a company issues new shares, which can decrease the percentage of the company owned by existing investors. This process is often part of complex corporate restructuring or new funding rounds for the startup.

Despite the slight decrease in ownership percentage, the financial ties remain incredibly tight. The combination of revenue sharing, massive cloud service contracts, and significant past investments creates a complex web of interdependence. The data suggests that while the partnership is becoming less exclusive, the financial rewards for Microsoft remain substantial.