Microsoft revealed in a regulatory filing that it generated $10 billion in revenue from commercial arrangements with OpenAI during the quarter ended September 30, 2026. This amount represents nearly 11% of Microsoft’s total quarterly revenue of $92.3 billion, underscoring the significant financial relationship between the two companies despite growing competition for customers.
For the full fiscal year 2026, revenue associated with OpenAI reached $24.1 billion. Based on the latest quarterly figures, Microsoft could potentially earn $40 billion annually from OpenAI-related deals. Additionally, Microsoft reported $7.2 billion in outstanding receivables from OpenAI at the end of September, up from $6 billion in June. These receivables reflect amounts owed by OpenAI for previous transactions rather than new revenue.
Details remain unclear on how much of this revenue stems from revenue-sharing agreements versus Azure cloud services. Previous reports indicated that Microsoft received $865.8 million in net revenue-sharing payments from OpenAI during the first nine months of 2025. OpenAI is believed to share around 20% of its revenue with Microsoft, a figure tied to a $13 billion investment Microsoft made in the AI startup, although neither party has publicly confirmed this percentage.
An agreement signed in April 2026 commits OpenAI to continue sharing revenue with Microsoft through 2030, subject to a cap, even as OpenAI gains the freedom to collaborate with other cloud providers. This shift followed an October 2025 arrangement where Microsoft loosened its exclusive hold on OpenAI, allowing the startup to partner with competing cloud services. In return, OpenAI agreed to purchase an additional $250 billion in Azure services.
Microsoft’s ownership stake in OpenAI has slightly decreased from about 25% in June to 24% in September 2026, continuing a gradual decline from approximately 27% after the October 2025 recapitalization. The company has not detailed the reasons behind this dilution.