Microsoft's AI revenue mostly comes from OpenAI, filings show

Microsoft's AI Sales Mostly Come from OpenAI, Disclosures Show

Microsoft's latest filing breaks out AI revenue: Azure AI services hit a ~$43B annual run rate, and $35B of that comes from reselling OpenAI's APIs—over 80%. The Copilot family (M365, GitHub, Dynamics, Security) together reached ~$18B annualized, though the post doesn't split them by product. The picture is clear: Microsoft's AI business today is mostly an OpenAI reseller, and its own Copilot products haven't yet become a second pillar.

Why it matters: Bloomberg obtained Microsoft internal disclosures breaking AI revenue into ~$43B Azure AI ($35B from OpenAI API resale) and ~$18B Copilot suite. Hard numbers, authoritative source, directly challenges the 'Microsoft AI powerhouse' narrative. Not 85+ because Copilot isn't broke...