How much of the AI boom is adding to U.S. growth?

The headline takeaway is that the AI capital expenditure boom is significantly overstating its contribution to U.S. GDP growth, potentially by as much as a fifth. While hyperscalers are spending near $800 billion on capex this year, much of this is overseas investment, intermediate inputs, or price increases, not directly additive to U.S. growth figures.

This mismeasurement matters for investors and the Federal Reserve. The true impact of AI investment will likely unfold gradually as it builds U.S. capital stock and boosts productivity. However, current national statistics struggle to capture this, especially the value of U.S. chip design manufactured abroad.

The magnitude of this statistical gap remains uncertain, with some estimates suggesting it could understate growth by 0.3 percentage points annually. Policymakers may need to rely on alternative data and market signals to gauge the economy's true pace amid this AI transformation.