On Wednesday, both Meta and Alphabet surpassed analyst expectations in their quarterly earnings, marking their most robust growth in several years. The companies also raised their annual capital expenditure projections, signaling a continued commitment to investing heavily in artificial intelligence infrastructure.

However, Wall Street responded differently to the two tech giants. Alphabet’s stock surged 7% in after-hours trading, whereas Meta’s shares dropped by 7%.

This divergence continues a pattern that has weighed on Meta during much of the generative AI expansion. Unlike Alphabet, Microsoft, and Amazon, which operate vast cloud infrastructure businesses that convert AI investments into revenue, Meta lacks such a division.

Consequently, convincing investors of the return on AI spending is more challenging for Meta CEO Mark Zuckerberg, as the benefits must primarily manifest through higher ad revenue and improved profitability.

All four major tech firms released their quarterly results on Wednesday. While Alphabet, Microsoft, and Amazon reported cloud divisions that outperformed expectations, Meta was the only one among them to see its stock decline.

Leading up to the earnings releases, Alphabet’s stock had climbed 118% over the past year, significantly outpacing Meta’s 21% gain. Amazon rose 40%, and Microsoft increased by approximately 8%.

«Google is outperforming its peers which is well reflected in the current valuation,» analysts at D.A. Davidson wrote in a report after the results, maintaining their neutral rating.

The capital expenditure figures across the board are staggering and continue to grow, partly because companies are spending more on memory due to a global shortage driven by surging AI demand.

Alphabet updated its 2026 capex guidance range to $180 billion to $190 billion, up from its previous estimate of $175 billion to $185 billion. CFO Anat Ashkenazi said the company’s 2027 capex is expected to «significantly increase» from this year’s figure.

The spending forecast was coupled with revenue growth of 20%, the fastest for any quarter since 2022. Cloud revenue soared 63%, and Alphabet said it has a backlog of $460 billion, nearly double where it was last quarter, because of demand for AI infrastructure.

Defending the Spending

Meta upped its capex guidance for the year to between $125 billion and $145 billion, from a prior range of $115 billion to $135 billion, a move the company said, «reflects our expectations for higher component pricing this year and, to a lesser extent, additional data center costs to support future year capacity.»

Similar to when Meta raised its capex forecast in October, Zuckerberg spent time on the earnings call defending the company’s hefty AI spending, pitching it as necessary for future growth while bolstering the core online ad business.

«The trend over the last few years seems clear, that we are seeing an increasing return on the amount that we can improve engagement for people and value for advertisers,» Zuckerberg said. «This encourages us to continue investing heavily in what we expect will provide increasing value over the coming years as well.»

On the revenue side, growth is more impressive than at Google. Sales jumped 33% from a year earlier, marking the strongest period for expansion since 2021.

Zuckerberg said the company is «very focused on increasing the efficiency of our investments,» and is developing custom silicon with Broadcom while investing in a «significant amount of AMD chips to complement the new Nvidia systems that we’re rolling out as well.»

Meta CFO Susan Li told analysts that the company needs to spend big on AI in order to «meet our infrastructure needs and ensure we maximize our strategic flexibility over the coming years.» The company also has to ensure it has enough computing resources to train more AI models, build more products and help its AI agent push for consumers and businesses worldwide, Li said.

She added that Meta’s recent «multi-year cloud deals and our infrastructure purchase agreements» contributed to a $107 billion jump in contractual commitments during the quarter.

Still, investors are waiting to see new revenue streams come to fruition after Zuckerberg spent the past 10 months overhauling his company’s AI strategy and bringing in high-priced talent. Earlier this month, Meta debuted Muse Spark as its first proprietary foundation model.

Alphabet, meanwhile, has been cashing in on its bets, including on homegrown chips called tensor processing units (TPUs), which are increasingly competing with Nvidia’s graphics processing units (GPUs).

CEO Sundar Pichai addressed the momentum in the chip side of the business several times on Wednesday’s call.

«There’s tremendous demand for both AI solutions as well as AI infrastructure, including massive interest in our GPU offerings, as well as TPUs,» he said.

WATCH: Meta shares sliding