AI Hyperscalers on Track for Record $828B Capex in 2025 as Amazon, Alphabet, Meta, Microsoft, and SpaceX Accelerate Data Center Buildout

The world's largest technology companies are pouring unprecedented sums into artificial intelligence infrastructure, with combined capital expenditures projected to hit a staggering $828 billion for the full year 2025. In the third quarter alone, Amazon, Alphabet, Meta, Microsoft, and SpaceX all reported increased capex, signaling that the AI arms race is far from cooling. These five players are racing to secure compute capacity, build massive data centers, and deploy custom silicon to support surging demand for AI training and inference. The spending spree is reshaping the technology landscape and has profound implications for the broader economy. For investors, the rising capex raises questions about near-term returns, but executives argue that underinvesting in AI would be a far riskier strategic error. For the energy sector, power-hungry data centers are driving new demand for electricity, grid upgrades, and even advanced nuclear and geothermal projects. Meanwhile, suppliers of servers, networking gear, and cooling systems are seeing order books swell well into 2026 and beyond. Notably, the companies show no signs of slowing down through 2027. Microsoft and Alphabet have both indicated that capex will continue to grow year-over-year, with a focus on AI-optimized data centers and global cloud expansion. Meta is investing heavily in its own AI infrastructure, including a new generation of custom chips, while Amazon's AWS remains the largest cloud provider and is expanding capacity across every major region. SpaceX, though less often grouped with traditional hyperscalers, is ramping up spending on its Starlink satellite network and related ground infrastructure, which increasingly relies on AI for network management. Why it matters: this capex tsunami is a leading indicator of where the global economy is heading—toward an AI-first future. The companies that control compute will control the next wave of innovation, from autonomous systems to scientific discovery. While the spending may pressure margins in the short term, the long-term payoff could be enormous. The race is on, and there is no finish line in sight.