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Alphabet vs Microsoft: Why Free Cash Flow Just Became the Only AI Scorecard That Matters

Alphabet fell 10.49% to $290.81 and Microsoft rose 2.78% to $545.78 in premarket trading on October 29, 2026, even though both reported results the same evening and are spending heavily on AI infrastructure. Alphabet's search revenue of $63.35 billion fell short of the $64.85 billion consensus, while Google Cloud revenue jumped 103% to $30.71 billion. Alphabet's capital expenditures of $51.36 billion exceeded its $42.29 billion operating cash flow, with the gap covered by $28.7 billion in senior notes and at-the-market stock sales. Microsoft, by contrast, posted fiscal first-quarter cloud revenue of $63.9 billion and free cash flow of almost $19 billion, while Alphabet's free cash flow was negative $9.1 billion. The article argues that free cash flow is becoming the key yardstick for comparing the two companies.

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GOOGLMSFTfree cash flowcloud computing

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GOOGL

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Alphabet Inc. (Class A)

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MarketUS stocks
SectorCommunication Services
IndustryInteractive Media & Services
Market cap$4.0T
Close on 10/28/2026325.61
Change that session+1.57%
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MSFT

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Microsoft

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MarketUS stocks
SectorInformation Technology
IndustrySystems Software
Market cap$3.9T
Close on 10/28/2026530.83
Change that session-0.09%
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Impact is scored by AI from the headline and may be wrong. It is not investment advice.

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