Microsoft reported generating $10 billion in revenue from its commercial arrangements with OpenAI during the quarter ending September 30, 2026. This figure represents nearly 11% of Microsoft’s total quarterly revenue of $92.3 billion, underscoring the significant financial dependence between the two organizations. For the full fiscal year 2026, revenue linked to OpenAI reached $24.1 billion, with expectations that at the current rate, annual revenue could hit $40 billion.

A substantial part of the revenue comes from Microsoft's cloud computing services, particularly Azure, which OpenAI continues to heavily utilize despite expanding partnerships with other cloud providers. OpenAI is obligated to purchase $250 billion in Azure services under a 2025 agreement, even after Microsoft loosened its exclusive tie with the AI lab. Revenue-sharing arrangements remain in place through 2030, subject to a cap, defining the financial dynamics between Microsoft and OpenAI following a $13 billion investment by Microsoft in the startup.

Microsoft’s ownership stake in OpenAI has progressively declined from approximately 27% after an October 2025 recapitalization to 24% in September 2026. The company reported $7.2 billion in outstanding receivables from OpenAI at the end of September, representing owed amounts for previous transactions. While details are unclear about how much revenue stems from revenue sharing versus cloud services, the partnership clearly remains a cornerstone of Microsoft’s AI business strategy.

Despite growing competition between Microsoft and OpenAI for customers, with OpenAI partnering with other cloud providers, the financial ties remain strong. Microsoft’s first fiscal quarter of 2027 showed solid overall growth, hitting record revenues driven largely by cloud services. Capital expenditures also reached an all-time high of $45.2 billion as Microsoft invests heavily to support current and future cloud commitments tied to its AI-driven business model.