Silicon Valley’s biggest names are pushing all their chips into artificial intelligence, betting on what could be tech’s biggest transformation in a generation — or its most expensive miscalculation. Based on their earnings guidance, MetaMETA

, AmazonAMZN

, AlphabetGOOGL

, and MicrosoftMSFT

expect to spend $320B on AI tech in 2025 — a 39% jump from last year’s $230B spend — even as profit growth has been decelerating. The spending spree comes amid growing pressure to stay competitive in the AI arms race, particularly after China’s DeepSeek emerged as a formidable challenger.

• Amazon leads the pack with a $100B commitment into its AWS division, while Microsoft plans to funnel $80B into AI workloads and data centers — with over half earmarked for US operations.
• Alphabet plans to shell out $75B for its AI data centers — a 57% increase from last year, while Meta isn’t far behind, earmarking up to $65B for AI infrastructure.

The stakes couldn’t be higher: Big Tech believes it faces a pivotal choice: either invest heavily in AI or risk becoming obsolete. However, as the profit growth of the “Magnificent Seven” peaked in late 2023 and is expected to slow for the fifth consecutive quarter, questions arise about the sustainability of their valuations, which are currently 40% above the broader S&P 500. Despite these challenges, Amazon’s CEO Andy Jassy predicts that supply constraints impacting cloud services will ease by the second half of 2025, potentially boosting AI investments. With NvidiaNVDA

set to report its earnings later this month, investors might get a glimpse into the seriousness of Big Tech’s spending promises.