RESEARCH
Global AI Infrastructure Spending Set Records in 2025 -- Trackers Split From $318B to $450B
IDC, Deloitte, and BloombergNEF all confirm 2025 was a record year for AI infrastructure investment, but they land on very different full-year totals. IDC counts $318B in global AI infrastructure spending (more than double 2024's $153B), Deloitte counts $371B for eight hyperscalers' AI data centers and computing resources (+44% YoY), and BloombergNEF counts just under $450B in capex across the 14 largest publicly owned data center operators. The $132B gap between the low and high estimate is driven almost entirely by differing definitions of what counts as 'AI infrastructure' spend, not disagreement about the underlying growth trend.
Findings
- IDC: full-year 2025 global AI infrastructure spending totaled $318 billion, more than double the $153 billion recorded in 2024 (a 107.6% year-over-year increase).
- Deloitte: eight hyperscalers are projected to have spent $371 billion in 2025 on AI data centers and computing resources, a 44% year-over-year increase.
- BloombergNEF: capital expenditure across the 14 largest publicly owned data center operators came in at just under $450 billion in 2025, on its way to roughly $750 billion in 2026 (~67% growth).
- All three trackers agree 2025 was a record year with growth rates ranging 44-108% YoY -- the $132B spread in absolute totals traces to scope (global AI infra vs. 8 named hyperscalers vs. 14 public data center operators), not disagreement about the trend itself.
Delta Engine result
↔ Divergence Detected — Δ 0.1965 (threshold 0.05)
- BloombergNEF T2 78
- IDC T0 95
- Deloitte T0 82
Evidence quality
avg 35 · min 25 · max 55 · spread 30