Is AI revenue growth keeping pace with capital spending?
Core argument: Bottom-up tracking of deduplicated AI sector revenue puts the figure at $25 billion a quarter, up from $13 billion in September, using a value-added method that reduces double-counting across the cloud, model-lab, and application layers.
Quarterly revenues have roughly quintupled year on year: OpenAI from $1.7 billion to $6 billion, and Anthropic from $400 million to $4.8 billion. Based on our own bottom-up tracking of deduplicated sector revenue, we now put the figure at $25 billion a quarter, up from $13 billion in September. One note on that number. Since the first piece, we’ve refined how we calculate sector revenue, moving to a more nuanced value-added approach that reduces double-counting across the cloud, model-lab, and application layers. Our original September figure for Q3 2025 was $25 billion; under the new method, that same quarter comes out at $13 billion. This keeps industry strain in the red for now. But if revenue growth holds on trend – and capex forecasts don’t revise upward – it should exit the red by the end of the year.




