Microsoft AI Revenue Mostly Comes from OpenAI: What the Disclosures Reveal 2026
How Much of Microsoft’s AI Revenue Actually Comes from OpenAI? Microsoft’s fiscal 2026 Form 10-K, filed with the SEC on August 5, 2026, reveals that the company recorded $24.1 billion in AI-related revenue from its partnership with OpenAI for the fiscal year ended June 30, 2026. According to Bloomberg’s analysis of the filing, this single customer relationship accounts for approximately 70% of Microsoft’s total AI revenue, which is estimated at $37–40 billion on an annualized basis. The disclosure offers the clearest public window yet into the financial architecture of one of the technology industry’s most consequential partnerships. ...