Microsoft Books $10 Billion in OpenAI-Related Revenue, Nearly 11% of Quarterly Total

Microsoft generated $10 billion in revenue from commercial arrangements with OpenAI, including revenue-sharing payments, in the quarter ended September 30, the company disclosed in a regulatory filing Wednesday. That equals nearly 11% of Microsoft's total quarterly revenue of $92.3 billion (MSFT), underscoring the deep financial ties between the two firms as they increasingly compete for the same customers. For the full 2026 fiscal year, OpenAI-related revenue reached $24.1 billion; at the latest quarterly pace, Microsoft would collect about $40 billion annually from the arrangements. Microsoft also reported $7.2 billion in outstanding receivables from OpenAI at the end of September, up from $6 billion at the end of June, representing amounts owed for previous transactions rather than additional revenue. The filing did not break out how much came from revenue-sharing payments versus Azure cloud services. Under an April 2026 agreement, OpenAI must continue sharing revenue with Microsoft through 2030, subject to a cap, while gaining freedom to use competing cloud providers. Microsoft's ownership stake in OpenAI slipped to 24% in September from about 25% in June, continuing a decline from roughly 27% after the October 2025 recapitalization.