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Microsoft vs. Alphabet: Which AI Cloud Stock Is Cheaper After the Capital Spending?

Microsoft Corporation (NASDAQ:MSFT) and Alphabet Inc. (NASDAQ:GOOGL) compete for enterprise computing budgets, but buying their shares also means financing the servers behind those services. At the October 7 close, Microsoft cost about 59 times trailing free cash flow, against Alphabet’s 80 times. Alphabet’s faster cloud growth therefore comes with a higher price for cash left after capital spending.

That difference changes the familiar argument that Alphabet looks cheaper on reported earnings. Its June quarter included a $98 billion net gain in other income, primarily unrealized investment gains. Those gains do not measure the profitability of selling cloud services.

Microsoft (MSFT) and Alphabet (GOOGL) both secured spots on our list of Top 10 AI Stocks That Will Skyrocket. See which AI giant ranks higher and which other stocks made the cut.

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Our comparison with Amazon shows which cloud operator retained more cash after its infrastructure bill. A separate valuation exercise asks how much Google Cloud must contribute before Alphabet’s price becomes easier to defend.

Faster cloud growth carries a larger cash hurdle

Alphabet’s June-quarter Google Cloud revenue rose 82% to $24.77 billion, with $8.81 billion of operating income. That 35.6% segment margin supports the bullish argument that scale is producing operating leverage. Search and other advertising revenue also increased 17%, providing another earnings engine.

Insider Monkey recorded 275 Alphabet holders in Q2 2026, up from 265 in Q1. Fisher increased its Alphabet shares about 3%.

The risk is treating segment profit as cash available to shareholders. Shared AI research costs sit partly outside the cloud segment, and infrastructure spending consumes cash before depreciation fully reaches earnings. Alphabet must protect advertising economics while obtaining attractive returns on that investment.

Microsoft’s fiscal fourth-quarter revenue rose 18% to $90 billion, and Azure and other cloud services revenue increased 43%. Its established software distribution gives it several ways to sell computing and applications to the same customers. The bear case is that this advantage still requires substantial investment: fiscal 2026 operating cash flow of $182.94 billion less $115.95 billion of property-and-equipment additions left $66.99 billion.

Both cash figures use operating cash flow less cash purchases of property and equipment. They exclude finance-lease principal paid through financing activities; Microsoft paid another $3.10 billion in fiscal 2026.

Microsoft’s holder count fell to 273 from 282 in Q1; Arrowstreet increased its shares about 14%. These are historical long-position snapshots.

Microsoft’s September 15 short interest was 67.35 million shares, about 0.9% of float.

Contracted demand helps only when its timing matches the spending. Our backlog analysis examines how much Microsoft’s reported commitments actually tell investors about near-term revenue.

What would make Alphabet worth the extra price?

Using each company’s latest trailing operating cash flow less capital spending, Alphabet generated about $53.27 billion, against Microsoft’s $66.99 billion. The periods both end in June 2026. At unchanged equity values, Alphabet would need roughly $73 billion of annual cash flow to match Microsoft’s current cash multiple, about 37% above its trailing amount. That is a valuation sensitivity, not a forecast.

I favor Microsoft at this relative cash price. Alphabet becomes preferable if cloud expansion lifts consolidated cash generation toward that hurdle without requiring proportionately more investment or damaging advertising returns. Microsoft loses its advantage if capital spending keeps rising while cash generation stalls. Neither multiple offers much protection against a prolonged investment cycle.

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