In the quarter that ended on September 30, Microsoft reported $10 billion in revenue linked to its commercial relationship with OpenAI, according to a filing with regulators. That amount represents roughly eleven percent of the company’s total quarterly revenue of $92.3 billion, underscoring the monetary significance of the AI collaboration even as the firms vie for overlapping customers.
For the full fiscal year of 2026, the revenue attributed to OpenAI reached $24.1 billion. Extrapolating from the latest quarterly performance, analysts estimate that Microsoft could collect as much as $40 billion per year from arrangements with the startup if the current pace persists, highlighting a rapidly growing financial stream within the broader corporate earnings profile.
At the close of September, Microsoft disclosed $7.2 billion in outstanding receivables from OpenAI, an increase from $6 billion recorded at the end of June. These figures represent sums that OpenAI still owes for prior transactions and are not counted as new revenue, indicating a growing balance sheet exposure tied to the partnership.
The precise composition of the $10 billion,whether it stems mainly from revenue-sharing payments or from Azure cloud services,remains unspecified. Earlier reporting in November 2025 cited leaked documents indicating that Microsoft received $865.8 million in net revenue-sharing from OpenAI during the first nine months of that year, and a prior deal reportedly set OpenAI’s revenue share to twenty percent following a multi-billion-dollar investment by Microsoft.
An agreement reached in April 2026 obligates OpenAI to continue sharing revenue with Microsoft through 2030, subject to a cap, while simultaneously permitting the AI firm to engage competing cloud providers. This arrangement preserves a revenue pipeline for Microsoft but also reflects a shift toward a less exclusive partnership model.
The exclusivity of the relationship began to loosen in October 2025 when Microsoft relinquished its exclusive hold, allowing OpenAI to partner with other cloud platforms. In return, OpenAI committed to purchasing an additional $250 billion of Azure services under the October 2025 deal, reinforcing Microsoft’s cloud business despite the broader market opening.
Microsoft’s equity stake in OpenAI has gradually decreased, falling from roughly twenty-seven percent after the October 2025 recapitalization to about twenty-five percent in June and further to twenty-four percent by September. The filing did not explain the cause of this dilution, but the trend suggests a modest reduction in direct ownership while revenue ties remain strong.