Meta’s Q3 2026 capital expenditures are being driven by an aggressive acceleration of AI infrastructure buildout, with the company guiding full-year 2026 spending at $130–145 billion after multiple raises tied to data-center construction, custom silicon, and power capacity. Q2 capex already reached roughly $31 billion, and infrastructure chief comments plus CEO Mark Zuckerberg’s recent confirmation of $100–200 billion AI commitments signal sustained high quarterly run rates to support Muse models, Superintelligence Labs, and competitive positioning against OpenAI and Anthropic. Earnings on October 28 will disclose the exact Q3 figure, with traders watching whether spending stays near or above recent levels amid rising component costs and gigawatt-scale projects like Hyperion and Prometheus.