Alphabet Inc. reports fourth-quarter 2025 earnings after Wednesday's market close, presenting investors with one of the most consequential tech earnings releases of the year. The Google parent company, valued at approximately $2.4 trillion, must demonstrate that its massive artificial intelligence investments are generating returns that justify both the spending and the stock's premium valuation.

Wall Street projects quarterly revenue of $111.3 billion, representing 15.4% year-over-year growth. Earnings per share are expected to reach $2.64, up 23% from the prior year. But the headline numbers may matter less than the narrative around AI—specifically, whether Alphabet's Gemini models and cloud infrastructure are capturing their share of the AI gold rush.

The AI Spending Question

Alphabet's capital expenditure plans have become the focal point of investor scrutiny. The company has projected 2025 capital investment of $91-$93 billion, with spending expected to rise even further in 2026. The vast majority of this investment flows into data center infrastructure needed to train and serve AI models.

The sheer scale of this commitment raises questions about returns. Unlike traditional capital projects with predictable cash flows, AI infrastructure investments require assumptions about future demand that remain highly uncertain. Bears worry that Alphabet is engaged in an arms race that may compress free cash flow without commensurate revenue gains.

"The market is looking for proof that these AI investments are more than expensive science projects. Alphabet needs to show that Gemini is gaining real traction and that Google Cloud's AI services are driving incremental revenue growth."

— Technology Analyst, IG Bank

Google Cloud: The Growth Engine

Google Cloud has emerged as Alphabet's most important growth vector, with analysts expecting approximately 36% year-over-year revenue expansion to around $12 billion. The cloud segment has achieved profitability and is benefiting from enterprise AI adoption that favors the platform's integrated Gemini offerings.

The company's cloud backlog reached $155 billion at the end of the third quarter—an 82% increase that provides exceptional revenue visibility. This metric suggests enterprise customers are committing to multi-year contracts that lock in Google Cloud as their AI infrastructure provider.

A key catalyst came in recent weeks with a five-year AI partnership with Liberty Global, deploying Gemini models and cloud tools across the cable operator's European business. Such enterprise wins validate Alphabet's strategy of embedding AI deeply into its cloud platform.

The Apple Partnership Milestone

Perhaps the most significant business development ahead of earnings is Apple's multiyear deal to use Gemini models in its revamped Siri virtual assistant, expected to launch in late 2026. This partnership represents a remarkable vote of confidence from a company that rarely relies on external technology providers.

The Apple deal generates both direct revenue and strategic validation. If Gemini powers billions of Siri queries daily, Alphabet gains unparalleled exposure to the iOS ecosystem while collecting valuable training data. The arrangement also eliminates the existential threat that Apple might build a competing AI that reduces Google Search usage on iPhones.

Advertising Resilience

Despite intense focus on AI, advertising remains Alphabet's core business, generating the vast majority of revenue. Search advertising has proven remarkably durable even as AI assistants have proliferated, defying predictions that ChatGPT and similar tools would disrupt Google's dominance.

YouTube advertising has also maintained momentum, with the platform's short-form Shorts feature driving engagement growth. Connected TV advertising represents a particularly promising opportunity as streaming continues to capture share from traditional linear television.

Waymo's $126 Billion Valuation

Alphabet's autonomous vehicle subsidiary Waymo made headlines with its recent $16 billion funding round at a $126 billion valuation—with Alphabet itself contributing approximately $13 billion. The investment underscores the parent company's commitment to robotaxi technology even as the path to profitability remains distant.

For Alphabet, Waymo represents both a risk and an option value. The subsidiary requires continued capital infusion but could transform into a dominant platform if autonomous vehicles achieve mainstream adoption. Wednesday's call may include updates on Waymo's expansion plans following its successful launches in San Francisco, Phoenix, and Los Angeles.

Regulatory Overhang

Alphabet continues to navigate regulatory challenges that could impact its business model. Antitrust scrutiny of Google's search dominance remains ongoing, with potential remedies ranging from behavioral constraints to structural separation. The company's advertising technology business also faces legal challenges in multiple jurisdictions.

While these risks are well-known and largely priced into the stock, any negative developments could weigh on sentiment. Management commentary on regulatory strategy will be closely monitored.

What to Watch on the Call

Investors should focus on:

  • 2026 capex guidance: How much higher will AI infrastructure spending go?
  • Cloud revenue growth: Is the 35%+ trajectory sustainable?
  • Gemini adoption metrics: Any color on usage growth and monetization
  • Search AI integration: Updates on AI-powered search features
  • YouTube engagement: Shorts performance and monetization trends

The Valuation Context

Alphabet trades at approximately 22 times forward earnings—a modest premium to the S&P 500 but a discount to pure-play cloud and AI companies. This valuation reflects both the company's cash-generative advertising franchise and lingering questions about whether its AI strategy can match the success of competitors like Microsoft and OpenAI.

Wednesday's results will help determine whether Alphabet deserves a higher multiple as an AI leader or a lower one as a company struggling to pivot from its advertising roots. With nearly $100 billion in annual AI investments at stake, the answer will have profound implications for the entire technology sector.